1zo_062题库
QUESTION 1
In your multitenant container database (CDB) containing pluggable database (PDBs),
you granted the CREATE TABLE privilege to the common user C # # A_ADMIN in root and all PDBs.
You execute the following command from the root container:
SQL > REVOKE create table FROM C # # A_ADMIN; What is the result?
A. It executes successfully and the CREATE TABLE privilege is revoked from C # #
A_ADMIN in root only.
B. It fails and reports an error because the CONTAINER=ALL clause is not used.
C. It excludes successfully and the CREATE TABLE privilege is revoked from C # #
A_ADMIN in root and all PDBs.
D. It fails and reports an error because the CONTAINER=CURRENT clause is not used.
E. It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in all PDBs.
Answer: A
Explanation
REVOKE ..FROM
If the current container is the root:
/ Specify CONTAINER = CURRENT to revoke a locally granted system privilege,
object privilege, or role from a common user or common role. The privilege or role
is revoked from the user or role only in the root. This clause does
not revoke privileges granted with CONTAINER = ALL.
/ Specify CONTAINER = ALL to revoke a commonly granted system privilege,
object privilege on a common object, or role from a common user or common role.
The privilege or role is revoked from the user or role across the entire CDB.
This clause can revoke only a privilege or role granted with CONTAINER = ALL
from the specified common user or common role. This clause does not revoke
privileges granted locally with CONTAINER = CURRENT. However, any
locally granted privileges that depend on the commonly granted privilege being
revoked are also revoked. If you omit this clause, then CONTAINER = CURRENT
is the default.
References:
QUESTION 2
You conned using SQL Plus to the root container of a multitenant container database
(CDB) with SYSDBA privilege.
The CDB has several pluggable databases (PDBs) open in the read/write mode. There
are ongoing transactions in both the CDB and PDBs.
What happens alter issuing the SHUTDOWN TRANSACTIONAL statement?
A. The shutdown proceeds immediately. The shutdown proceeds as soon as all
transactions in the PDBs are either committed or rolled hack.
B. The shutdown proceeds as soon as all transactions in the CDB are either committed
or rolled back.
C. The shutdown proceeds as soon as all transactions in both the CDB and PDBs are
either committed or rolled back.
D. The statement results in an error because there are open PDBs.
Answer: B
Explanation
* SHUTDOWN [ABORT | IMMEDIATE | NORMAL | TRANSACTIONAL
[LOCAL]]
Shuts down a currently running Oracle Database instance, optionally closing and
dismounting a database. If the current database is a pluggable database,
only the pluggable database is closed. The consolidated instance continues to run.
Shutdown commands that wait for current calls to complete or users to disconnect
such as SHUTDOWN NORMAL and SHUTDOWN TRANSACTIONAL have a time limit that the SHUTDOWN
command will wait. If all events blocking the shutdown have not occurred within the
time limit, the shutdown command cancels with the following message:
ORA-01013: user requested cancel of current operation
* If logged into a CDB, shutdown closes the CDB instance.
To shutdown a CDB or non CDB, you must be connected to the CDB or non CDB
instance that you want to close, and then enter SHUTDOWN Database closed.
Database dismounted. Oracle instance shut down. To shutdown a PDB,
you must log into the PDB to issue the SHUTDOWN command. SHUTDOWN
Pluggable Database closed. Note:
* Prerequisites for PDB Shutdown When the current container is a pluggable database (PDB),
the SHUTDOWN command can only be used if: The current user has SYSDBA, SYSOPER,
SYSBACKUP, or SYSDG system privilege. The privilege is either commonly granted or
locally granted in the PDB. The current user exercises the privilege using AS SYSDBA,
AS SYSOPER, AS SYSBACKUP, or AS SYSDG at connect time. To close a PDB,
the PDB must be open.
QUESTION 3
Which two are true concerning a multitenant container database with three pluggable
database? (Choose two.)
A. All administration tasks must be done to a specific pluggable database.
B. The pluggable databases increase patching time.
C. The pluggable databases reduce administration effort.
D. The pluggable databases are patched together.
E. Pluggable databases are only used for database consolidation.
Answer: C D
QUESTION 4
Examine the following command:
CREATE TABLE (prod_id number(4),
Prod_name varchar2 (20),
Category_id number(30),
Quantity_on_hand number (3) INVISIBLE);
Which three statements are true about using an invisible column in the PRODUCTS table? (Choose three.)
A. The %ROWTYPE attribute declarations in PL/SQL to access a row will not
display the invisible column in the output.
B. The DESCRIBE commands in SQL *Plus will not display the invisible column in the output.
C. Referential integrity constraint cannot be set on the invisible column.
D. The invisible column cannot be made visible and can only be marked as unused.
E. A primary key constraint can be added on the invisible column.
Answer: A B E
Explanation
AB: You can make individual table columns invisible. Any generic access of a table
does not show the invisible columns in the table. For example,
the following operations do not display invisible columns in the output:
* SELECT * FROM statements in SQL
* DESCRIBE commands in SQL*Plus
* %ROWTYPE attribute declarations in PL/SQL
* Describes in Oracle Call Interface (OCI) Incorrect:
Not D: You can make invisible columns visible.
You can make a column invisible during table creation or when you add a column to a
table, and you can later alter the table to make the same column visible.
References:
QUESTION 5
The following parameter are set for your Oracle 12c database instance:
OPTIMIZER_CAPTURE_SQL_PLAN_BASELINES=FALSE
OPTIMIZER_USE_SQL_PLAN_BASELINES=TRUE
You want to manage the SQL plan evolution task manually. Examine the following
steps:
1. Set the evolve task parameters.
2. Create the evolve task by using the DBMS_SPM.CREATE_EVOLVE_TASK function.
3. Implement the recommendations in the task by using the
DBMS_SPM.IMPLEMENT_EVOLVE_TASK function.
4. Execute the evolve task by using the DBMS_SPM.EXECUTE_EVOLVE_TASK function.
5. Report the task outcome by using the DBMS_SPM.REPORT_EVOLVE_TASK function.
Identify the correct sequence of steps:
A. 2, 4, 5
B. 2, 1, 4, 3, 5
C. 1, 2, 3, 4, 5
D. 1, 2, 4, 5
Answer: B
Explanation
* Evolving SQL Plan Baselines
* 2. Create the evolve task by using the DBMS_SPM.CREATE_EVOLVE_TASK
function. This function creates an advisor task to prepare the plan evolution of one or more
plans for a specified SQL statement. The input parameters can be a SQL handle,
plan name or a list of plan names, time limit, task name, and description.
1. Set the evolve task parameters. SET_EVOLVE_TASK_PARAMETER
This function updates the value of an evolve task parameter. In this release,
the only valid parameter is TIME_LIMIT.
4. Execute the evolve task by using the DBMS_SPM.EXECUTE_EVOLVE_TASK
function. This function executes an evolution task. The input parameters can be the task name,
execution name, and execution description. If not specified, the advisor generates the
name, which is returned by the function.
3: IMPLEMENT_EVOLVE_TASK
This function implements all recommendations for an evolve task. Essentially, this
function is equivalent to using ACCEPT_SQL_PLAN_BASELINE for all recommended plans.
Input parameters include task name, plan name, owner name, and execution name.
5. Report the task outcome by using the DBMS_SPM_EVOLVE_TASK function.
This function displays the results of an evolve task as a CLOB. Input parameters
include the task name and section of the report to include.
References:
QUESTION 6
Which action takes place when a file checkpoint occurs?
A. The checkpoint position is advanced in the checkpoint queue.
B. All buffers for a checkpointed file that were modified before a specific SCN are
written to disk by DBWn and the SCN is stored in the control file.
C. The Database Writer process (DBWn) writes all dirty buffers in the buffer cache to data files.
D. The Log Writer process (LGWR) writes all redo entries in the log buffer to online redo log files.
Answer: B
QUESTION 7
You configure your database Instance to support shared server connections.
Which two memory areas that are part of PGA are stored in SGA instead, for shared
server connection? (Choose two.)
A. User session data
B. Stack space
C. Private SQL area
D. Location of the runtime area for DML and DDL Statements
E. Location of a part of the runtime area for SELECT statements
Answer: A C
Explanation
A: PGA itself is subdivided. The UGA (User Global Area) contains session state
information, including stuff like package-level variables, cursor state, etc.
Note that, with shared server, the UGA is in the SGA. It has to be, because
shared server means that the session state needs to be accessible to all server
processes, as any one of them could be assigned a particular session.
However, with dedicated server (which likely what you're using),
the UGA is allocated in the PGA.
C: The Location of a private SQL area depends on the type of connection established
for a session. If a session is connected through a dedicated server, private SQL areas
are located in the server process’ PGA. However, if a session is connected through
a shared server, part of the private SQL area is kept in the SGA.
Note:
* System global area (SGA)
The SGA is a group of shared memory structures, known as SGA components, that
contain data and control information for one Oracle Database instance.
The SGA is shared by all server and background processes. Examples of data stored in
the SGA include cached data blocks and shared SQL areas.
* Program global area (PGA)
A PGA is a memory region that contains data and control information for a server
process. It is nonshared memory created by Oracle Database when a server process
is started. Access to the PGA is exclusive to the server process. There is one PGA for
each server process. Background processes also allocate their own PGAs. The total memory used by all
individual PGAs is known as the total instance PGA memory, and the collection of
individual PGAs is referred to as the total instance PGA, or just instance PGA.
You use database initialization parameters to set the size of the instance PGA,
not individual PGAs.
References:
QUESTION 8
Examine this command:
SQL > exec DBMS_STATS.SET_TABLE_PREFS (‘SH’, ‘CUSTOMERS’, ‘PUBLISH’, ‘false’);
Which three statements are true about the effect of this command? (Choose three.)
A. Statistics collection is not done for the CUSTOMERS table when schema stats are gathered.
B. Statistics collection is not done for the CUSTOMERS table when database stats are gathered.
C. Any existing statistics for the CUSTOMERS table are still available to the optimizer at parse time.
D. Statistics gathered on the CUSTOMERS table when schema stats are gathered are
stored as pending statistics.
E. Statistics gathered on the CUSTOMERS table when database stats are gathered are
stored as pending statistics.
Answer: C D E
QUESTION 9
What happens if a maintenance window closes before a job that collects optimizer
statistics completes?
A. The job is terminated and the gathered statistics are not saved.
B. The job is terminated but the gathered statistics are not published.
C. The job continues to run until all statistics are gathered.
D. The job is terminated and statistics for the remaining objects are collected the next
time the maintenance window
opens. Answer: D
QUESTION 10
Which are two ways for a database service to be recognized by a listener in Oracle
Database 12c? (Choose two.)
A. Dynamic Registration by the LREG process
B. Dynamic Registration by the SMON process
C. Static registration in the listener.ora file using the GLOBAL_DBNAME parameter
D. Dynamic Registration by the PMON process
E. Static registration in the listener.ora file using the SERVICE_NAME parameter
Answer: A E
QUESTION 11
You execute the following PL/SQL:
Which two statements are true? (Choose two.)
A. Fine-Grained Auditing (FGA) is enabled for the PRICE column in the
PRODUCTS table for SELECT statements only when a row with PRICE > 10000 is accessed.
B. FGA is enabled for the PRODUCTS.PRICE column and an audit record is written
whenever a row with PRICE >10000 is accessed.
C. FGA is enabled for all DML operations by JIM on the PRODUCTS.PRICE column.
D. FGA is enabled for the PRICE column of the PRODUCTS table and the SQL
statements is captured in the FGA audit
trial. Answer: A B
QUESTION 12
Your database is open and the LISTENER listener running. You stopped the wrong
listener LISTENER by issuing the following command:
1snrctl > STOP
What happens to the sessions that are presently connected to the database Instance?
A. They are able to perform only queries.
B. They are not affected and continue to function normally.
C. They are terminated and the active transactions are rolled back.
D. They are not allowed to perform any operations until the listener LISTENER is started.
Answer: B
Explanation
The listener is used when the connection is established. The immediate impact of
stopping the listener will be that no new session can be established from a remote host.
Existing sessions are not compromised.
QUESTION 13
What are two benefits of installing Grid Infrastructure software for a stand-alone
server before installing and creating an Oracle database?
A. Effectively implements role separation
B. Enables you to take advantage of Oracle Managed Files.
C. Automatically registers the database with Oracle Restart.
D. Helps you to easily upgrade the database from a prior release.
E. Enables the Installation of Grid Infrastructure files on block or raw devices.
Answer: A C
Explanation
C: To use Oracle ASM or Oracle Restart, you must first install Oracle Grid
Infrastructure for a standalone server before you install and create the database. Otherwise, you
must manually register the database with Oracle Restart. Desupport of Block and Raw Devices
With the release of Oracle Database 11g release 2 (11.2) and Oracle RAC 11g release
2 (11.2), using Database Configuration Assistant or the installer to store Oracle Clusterware or Oracle
Database files directly on block or raw devices is not supported.
If you intend to upgrade an existing Oracle RAC database, or an Oracle RAC
database with Oracle ASM instances, then you can use an existing raw or block
device partition, and perform a rolling upgrade of your existing installation.
Performing a new installation using block or raw devices is not allowed.
References:
QUESTION 14
Examine the contents of SQL loader control file:
Which three statements are true regarding the SQL* Loader operation performed
using the control file? (Choose three.)
A. An EMP table is created if a table does not exist. Otherwise, if the EMP table is
appended with the loaded data.
B. The SQL* Loader data file myfile1.dat has the column names for the EMP table.
C. The SQL* Loader operation fails because no record terminators are specified.
D. Field names should be the first line in the both the SQL* Loader data files.
E. The SQL* Loader operation assumes that the file must be a stream record format
file with the normal carriage return string as the record terminator.
Answer: A B E
QUESTION 15
You plan to migrate your database from a File system to Automata Storage
Management (ASM) on same platform.
Which two methods or commands would you use to accomplish this task? (Choose two.)
A. RMAN CONVERT command
B. Data Pump Export and import
C. Conventional Export and Import
D. The BACKUP AS COPY DATABASE . . . command of RMAN
E. DBMS_FILE_TRANSFER with transportable tablespace
Answer: A D
QUESTION 16
In your multitenant container database (CDB) containing pluggable database (PDBs),
the HR user executes the following commands to create and grant privileges on a procedure:
CREATE OR REPLACE PROCEDURE create_test_v (v_emp_id NUMBER,
v_ename VARCHAR2, v_SALARY
NUMBER, v_dept_id NUMBER)
BEGIN
INSERT INTO hr.test VALUES (V_emp_id, V_ename, V_salary, V_dept_id);
END;
/
GRANT EXECUTE ON CREATE_TEST TO john, jim, smith, king;
How can you prevent users having the EXECUTE privilege on the CREATE_TEST
procedure from inserting values into tables on which they do not have any privileges?
A. Create the CREATE_TEST procedure with definer’s rights.
B. Grant the EXECUTE privilege to users with GRANT OPTION on the CREATE_TEST procedure.
C. Create the CREATE_TEST procedure with invoker’s rights.
D. Create the CREATE_TEST procedure as part of a package and grant users the
EXECUTE privilege the package.
Answer: C
Explanation
If a program unit does not need to be executed with the escalated privileges of the
definer, you should specify that the program unit executes with the privileges of the caller,
also known as the invoker. Invoker's rights can mitigate the risk of SQL injection.
Incorrect:
Not A: By default, stored procedures and SQL methods execute with the privileges of
their owner, not their current user.
Such definer-rights subprograms are bound to the schema in which they reside.
not B: Using the GRANT option, a user can grant an Object privilege to another user
or to PUBLIC.
QUESTION 17
Which two statements correctly describe the relationship between data files and
logical database structures? (Choose two.)
A. A segment cannot span data files.
B. A data file can belong to only one tablespace.
C. An extent cannot span data files.
D. The size of an Oracle data block in a data file should be the same as the size of an OS block.
Answer: B C
Explanation
A single extent can never span data files.
QUESTION 18
Which two statements are true? (Choose two.)
A. A role cannot be assigned external authentication.
B. A role can be granted to other roles.
C. A role can contain both system and object privileges.
D. The predefined resource role includes the unlimited_tablespace privilege.
E. All roles are owned by the sys user.
F. The predefined connect role is always automatically granted to all new users at the
time of their creation.
Answer: B C
QUESTION 19
Examine the parameter for your database instance:
You generated the execution plan for the following query in the plan table and noticed
that the nested loop join was done.
After actual execution of the query, you notice that the hash join was done in the execution plan:
Identify the reason why the optimizer chose different execution plans.
A. The optimizer used a dynamic plan for the query.
B. The optimizer chose different plans because automatic dynamic sampling was enabled.
C. The optimizer used re-optimization cardinality feedback for the query.
D. The optimizer chose different plan because extended statistics were created for the columns used.
Answer: A
QUESTION 20
Examine the current value for the following parameters in your database instance:
SGA_MAX_SIZE = 1024M
SGA_TARGET = 700M
DB_8K_CACHE_SIZE = 124M
LOG_BUFFER = 200M
You issue the following command to increase the value of DB_8K_CACHE_SIZE:
SQL> ALTER SYSTEM SET DB_8K_CACHE_SIZE=140M;
Which statement is true?
A. It fails because the DB_8K_CACHE_SIZE parameter cannot be changed dynamically.
B. It succeeds only if memory is available from the autotuned components if SGA.
C. It fails because an increase in DB_8K_CACHE_SIZE cannot be accommodated within SGA_TARGET.
D. It fails because an increase in DB_8K_CACHE_SIZE cannot be accommodated within SGA_MAX_SIZE.
Answer: D
Explanation * The SGA_TARGET parameter can be dynamically increased up to the
value specified for the SGA_MAX_SIZE parameter, and it can also be reduced.
* Example:
For example, suppose you have an environment with the following configuration:
SGA_MAX_SIZE = 1024M
SGA_TARGET = 512M
DB_8K_CACHE_SIZE = 128M
In this example, the value of SGA_TARGET can be resized up to 1024M and can also
be reduced until one or more of the automatically sized components reaches its minimum size. The exact value
depends on environmental factors such as the number of CPUs on the system. However,
the value of DB_8K_CACHE_SIZE remains fixed at all times at 128M
* DB_8K_CACHE_SIZE Size of cache for 8K buffers
* For example, consider this configuration: SGA_TARGET = 512M
DB_8K_CACHE_SIZE = 128M In this example,
increasing DB_8K_CACHE_SIZE by 16 M to 144M means that the 16M is taken away from the
automatically sized components. Likewise, reducing DB_8K_CACHE_SIZE by 16M
to 112M means that the 16M is given to the automatically sized components.
QUESTION 21
Which three statements are true PFILEs, SPFILEs or both? (Choose three.)
A. SPFILEs and PFILEs may both be edited with an O/S editing utility
B. Some SPFILE parameters can be modified successfully with the
SCOPE=MEMORY clause
C. A SPFILE can be created by an idle instance
D. A PFILE can be created by an idle instance
E. All SPFILE parameters can be modified successfully with the SCOPE=BOTH clause
F. All SPFILE parameters can be modified successfully with the SCOPE=MEMORY clause
Answer: B D E
QUESTION 22
Examine the query and its output:
What might have caused three of the alerts to disappear?
A. The threshold alerts were cleared and transferred to DBA_ALERT_HISTORY.
B. An Automatic Workload Repository (AWR) snapshot was taken before the
execution of the second query.
C. An Automatic Database Diagnostic Monitor (ADOM) report was generated before
the execution of the second query.
D. The database instance was restarted before the execution of the second query.
Answer: D
QUESTION 23
Which three factors influence the optimizer's choice of an execution plan? (Choose three.)
A. the optimizer_mode initialization parameter
B. operating system (OS) statistics
C. cardinality estimates
D. object statistics in the data dictionary
E. fixed baselines
Answer: A C D
QUESTION 24
Your database supports an online transaction processing (OLTP) application. The
application is undergoing some major schema changes, such as addition of new
indexes and materialized views. You want to check the impact of these changes
on workload performance. What should you use to achieve this?
A. Database replay
B. SQL Tuning Advisor
C. SQL Access Advisor
D. SQL Performance Analyzer
E. Automatic Workload Repository compare reports
Answer: D
Explanation
You can use the SQL Performance Analyzer to analyze the SQL performance impact
of any type of system change.
Examples of common system changes include:
• Database upgrades
• Configuration changes to the operating system, hardware, or database
• Database initialization parameter changes
• Schema changes, such as adding new indexes or materialized views
• Gathering optimizer statistics
• SQL tuning actions, such as creating SQL profiles
QUESTION 25
Examine this command:
SQL> ALTER SYSTEM SET ENABLE_DDL_LOGGING=TRUE;
Which two statements are true? (Choose two.)
A. All data definition language (DDL) statements are written to the control file
B. Some DDL statements are written to an XML file in the ADR home
C. All DDL statements are logged in to a text file in Automatic Diagnostic Repository (ADR) home
D. Some data definition language (DDL) statements are written to the control file
E. Some DDL statements are written to a text file in the ADR home
F. The Alert Log still contains some DDL statements
Answer: D E
Answer: BC
QUESTION 26
After implementing full Oracle Data Redaction, you change the default value for the NUMBER data type as follows:
After changing the value, you notice that FULL redaction continues to redact numeric data with zero.
What must you do to activate the new default value for numeric full redaction?
A. Re-enable redaction policies that use FULL data redaction.
B. Re-create redaction policies that use FULL data redaction.
C. Re-connect the sessions that access objects with redaction policies defined on them.
D. Flush the shared pool.
E. Restart the database instance.
Answer: E
Explanation
About Altering the Default Full Data Redaction Value
You can alter the default displayed values for full Data Redaction polices. By default,
0 is the redacted value when Oracle Database performs full redaction (DBMS_REDACT.FULL)
on a column of the NUMBER data type. If you want to change it to another value (for example, 7),
then you can run the DBMS_REDACT.UPDATE_FULL_REDACTION_VALUES procedure to modify
this value. The modification applies to all of the Data Redaction policies in the current database instance.
After you modify a value, you must restart the database for it to take effect.
Note:
* The DBMS_REDACT package provides an interface to Oracle Data Redaction,
which enables you to mask (redact)
data that is returned from queries issued by low-privileged users or an application.
* UPDATE_FULL_REDACTION_VALUES Procedure This procedure modifies the
default displayed values for a Data Redaction policy for full redaction.
* After you create the Data Redaction policy, it is automatically enabled and ready to
redact data.
* Oracle Data Redaction enables you to mask (redact) data that is returned from
queries issued by low-privileged users or applications. You can redact column data by using one of the
following methods:
/ Full redaction.
/ Partial redaction.
/ Regular expressions.
/ Random redaction.
/ No redaction. References:
QUESTION 27
Which two statements are true concerning the Resource Manager plans for individual
pluggable databases (PDB plans) in a multitenant container database (CDB)? (Choose two.)
A. If no PDB plan is enabled for a pluggable database, then all sessions for that PDB
are treated to an equal degree of the resource share of that PDB.
B. In a PDB plan, subplans may be used with up to eight consumer groups.
C. If a PDB plan is enabled for a pluggable database, then resources are allocated to
consumer groups across all PDBs in the CDB.
D. If no PDB plan is enabled for a pluggable database, then the PDB share in the
CDB plan is dynamically calculated.
E. If a PDB plan is enabled for a pluggable database, then resources are allocated to
consumer groups based on the shares provided to the PDB in the CDB plan and the
shares provided to the consumer groups in the PDB plan.
Answer: A E
Explanation
A: Setting a PDB resource plan is optional. If not specified, all sessions within the
PDB are treated equally.
*In a non-CDB database, workloads within a database are managed with resource
plans. In a PDB, workloads are also managed with resource plans, also called PDB resource
plans. The functionality is similar except for the following differences:
/ Non-CDB Database Multi-level resource plans Up to 32 consumer groups Subplans
/ PDB Database Single-level resource plans only Up to 8 consumer groups
(not B) No subplans
QUESTION 28
Which two statements are true about the RMAN validate database command?
(Choose two.)
A. It checks the database for intrablock corruptions.
B. It can detect corrupt pfiles.
C. It can detect corrupt spfiles.
D. It checks the database for interblock corruptions.
E. It can detect corrupt block change tracking files.
Answer: A C
Explanation
Block corruptions can be divided Into Interblock corruption and intrablock corruption.
In intrablock corruption. th« corruption occurs within the block itself and can be either physical or logical
corruption. In interblock corruption, the corruption occurs between blocks and can only be logical corruption.
(key word) * The VALIDATE command checks for intrablock corruptions only. Only DBVERIFY and the ANALYZE
statement detect Interblock corruption. VALIDATE Command Output ••> List of Control File and SPFILE.
File TYPE >»» SPFILE or Control File. Status >»» OK if no corruption, or FAILED If block corruption is found.
Blocks Failing »»» The number of blocks that fail the corruption check. These blocks are newly corrupt.
Blocks Examined »»» Total number of blocks in the file. Oracle' Database Backup and Recovery User's Guide
12c Release 1 (12.1) - 16 Validating Database Files and Backups
QUESTION 29
You execute the commands:
Which two statements are true? (Choose two.)
A. The create user command fails if any role with the name Sidney exists in the database.
B. The user Sidney can connect to the database instance but cannot perform sort
operations because no space quota is specified for the temp tablespace.
C. The user Sidney is created but cannot connect to the database instance because no profile is default.
D. The user Sidney can connect to the database instance but requires relevant privileges to
create objects in the users tablespace.
E. The user Sidney is created and authenticated by the operating system.
Answer: A D
QUESTION 30
You are administering a database and you receive a requirement to apply the following restrictions:
1. A connection must be terminated after four unsuccessful login attempts by user.
2. A user should not be able to create more than four simultaneous sessions.
3. User session must be terminated after 15 minutes of inactivity.
4. Users must be prompted to change their passwords every 15 days.
How would you accomplish these requirements?
A. by granting a secure application role to the users
B. by creating and assigning a profile to the users and setting the REMOTE_OS_AUTHENT parameter to FALSE
C. By creating and assigning a profile to the users and setting the
SEC_MAX_FAILED_LOGIN_ATTEMPTS parameter to 4
D. By Implementing Fine-Grained Auditing (FGA) and setting the
REMOTE_LOGIN_PASSWORD_FILE parameter to NONE.
E. By implementing the database resource Manager plan and setting the
SEC_MAX_FAILED_LOGIN_ATTEMPTS parameters to 4.
Answer: A
QUESTION 31
Examine the resources consumed by a database instance whose current Resource
Manager plan is displayed.
Which two statements are true? (Choose two.)
A. An attempt to start a new session by a user belonging to DSS_QUERIES fails with an error.
B. An attempt to start a new session by a user belonging to OTHER_GROUPS fails with an error.
C. The CPU_WAIT_TIME column indicates the total time that sessions in the
consumer group waited for the CPU due to resource management.
D. The CPU_WAIT_TIME column indicates the total time that sessions in the
consumer group waited for the CPU due to I/O waits and latch or enqueue contention.
E. A user belonging to the DSS__QUERIES resource consumer group can create a
new session but the session will be queued.
Answer: C E
QUESTION 32
Which task would you recommend before using the Database Upgrade Assistant
(DBUA) to upgrade a single-instance Oracle 11g R2 database to Oracle Database 12c?
A. shutting down the database instance that is being upgraded
B. executing the catctl.pl script to run the upgrade processes in parallel
C. running the Pre-Upgrade Information Tool
D. copying the listener.ora file to the new ORACLE_HOME
Answer: C
QUESTION 33
You administer an online transaction processing (OLTP) system whose database is
stored in Automatic Storage Management (ASM) and whose disk group use normal redundancy.
One of the ASM disks goes offline, and is then dropped because it was not brought
online before DISK_REPAIR_TIME elapsed. When the disk is replaced and added back
to the disk group, the ensuing rebalance operation is too slow.
Which two recommendations should you make to speed up the rebalance operation if
this type of failure happens again?
(Choose two.)
A. Increase the value of the ASM_POWER_LIMIT parameter.
B. Set the DISK_REPAIR_TIME disk attribute to a lower value.
C. Specify the statement that adds the disk back to the disk group.
D. Increase the number of ASMB processes.
E. Increase the number of DBWR_IO_SLAVES in the ASM instance.
Answer: A D
QUESTION 34
A senior DBA asked you to execute the following command to improve performance:
SQL> ALTER TABLE subscribe log STORAGE (BUFFER_POOL recycle);
You checked the data in the SUBSCRIBE_LOG table and found that it is a large table
containing one million rows. What could be a reason for this recommendation?
A. The keep pool is not configured.
B. Automatic Workarea Management is not configured.
C. Automatic Shared Memory Management is not enabled.
D. The data blocks in the SUBSCRIBE_LOG table are rarely accessed.
E. All the queries on the SUBSCRIBE_LOG table are rewritten to a materialized view.
Answer: D
Explanation
The most of the rows in SUBSCRIBE_LOG table are accessed once a week.
QUESTION 35
Which four are true about creating and running a remote database scheduler jobs? (Choose four.)
A. A database destination must exist or be created for the remote database
B. It must run as a user that is defined on the remote database
C. Remote database jobs always run as the same user who submits the job on the local database
D. A credential is optional for a remote database job
E. A credential must be created to define the remote user
F. A database destination group must exist or be created for a job to run on multiple remote databases
G. A destination is optional for a remote database job because DB links can be used instead
Answer: A B D F
QUESTION 36
An application accesses a small lookup table frequently. You notice that the required
data blocks are getting aged out of the default buffer cache.
How would you guarantee that the blocks for the table never age out?
A. Configure the KEEP buffer pool and alter the table with the corresponding storage clause.
B. Increase the database buffer cache size.
C. Configure the RECYCLE buffer pool and alter the table with the corresponding
storage clause. D. Configure Automata Shared Memory Management.
E. Configure Automatic Memory Management.
Answer: A
Explanation
Schema objects are referenced with varying usage patterns; therefore, their cache
behavior may be quite different. Multiple buffer pools enable you to address these differences.
You can use a KEEP buffer pool to maintain objects in the buffer cache and
a RECYCLE buffer pool to prevent objects from consuming unnecessary space in the cache.
When an object is allocated to a cache, all blocks from that object are placed in that cache.
Oracle maintains a DEFAULT buffer pool for objects that have not been assigned to one of the buffer pools.
QUESTION 37
On your Oracle 12c database, you invoked SQL *Loader to load data into the
EMPLOYEES table in the HR schema by issuing the following command:
$> sqlldr hr/hr@pdb table=employees
Which two statements are true regarding the command? (Choose two.)
A. It succeeds with default settings if the EMPLOYEES table belonging to HR is
already defined in the database.
B. It fails because no SQL *Loader data file location is specified.
C. It fails if the HR user does not have the CREATE ANY DIRECTORY privilege.
D. It fails because no SQL *Loader control file location is specified.
Answer: A C
Explanation
Note:
* SQL*Loader is invoked when you specify the sqlldr command and, optionally,
parameters that establish session characteristics.
QUESTION 38
To implement Automatic Management (AMM), you set the following parameters:
When you try to start the database instance with these parameter settings, you receive
the following error message:
SQL > startup
ORA-00824: cannot set SGA_TARGET or MEMORY_TARGET due to existing
internal settings, see alert log for more information.
Identify the reason the instance failed to start.
A. The PGA_AGGREGATE_TARGET parameter is set to zero.
B. The STATISTICS_LEVEL parameter is set to BASIC.
C. Both the SGA_TARGET and MEMORY_TARGET parameters are set.
D. The SGA_MAX_SIZE and SGA_TARGET parameter values are not equal.
Answer: B
Explanation
Example:
SQL> startup force
ORA-00824: cannot set SGA_TARGET or MEMORY_TARGET due to existing
internal settings ORA-00848:
STATISTICS_LEVEL cannot be set to BASIC with SGA_TARGET or MEMORY_TARGET
QUESTION 39
Examine the following parameters for a database instance:
MEMORY_MAX_TARGET=0
MEMORY_TARGET=0
SGA_TARGET=0
PGA_AGGREGATE_TARGET=500m
Which three initialization parameters are not controlled by Automatic Shared Memory
Management (ASMM)? (Choose three.)
A. LOG_BUFFER
B. SORT_AREA_SIZE
C. JAVA_POOL_SIZE
D. STREAMS_POOL_SIZE
E. DB_16K_CACHE_SZIE
F. DB_KEEP_CACHE_SIZE
Answer: A E F
Explanation
Manually Sized SGA Components that Use SGA_TARGET Space
SGA Component, Initialization Parameter
/ The log buffer LOG_BUFFER
/ The keep and recycle buffer caches
DB_KEEP_CACHE_SIZE
DB_RECYCLE_CACHE_SIZE
/ Nonstandard block size buffer caches DB_nK_CACHE_SIZE
Note:
* In addition to setting SGA_TARGET to a nonzero value, you must set to zero all
initialization parameters listed in the table below to enable full automatic tuning of
the automatically sized SGA components.
* Table, Automatically Sized SGA Components and Corresponding Parameters
QUESTION 40
DAILY_ORDS_LST is created in locally managed tablespace ORDERS_TBS
which uses autommatic segment space management.
Which two are true? (Choose two.)
A. 80% of every data block in daily_ords_list is reserved for row inserts
B. 20% of each data block in the table is reserved for row updates
C. PCTFREE can help to minimize row chaining during inserts
D. PCTFREE can help reduce row migration during updates
E. PCTFREE eliminates row chaining during inserts
Answer: B D
QUESTION 41
Your database is in ARCHIVELOG mode.
You want to disable archiving for the database.
Examine these steps:
1. Execute the ALTER DATABASE NOARCHIVELOG command
2. Execute SHUTDOWN IMMEDIATE
3. Execute STARTUP MOUNT
4. Set the DB_RECOVERY_FILE_DEST parameter to $ORACLE_HOME/dbs/
5. Execute STARTUP NOMOUNT
6. Open the database
7. Execute SHUTDOWN TRANSACTIONAL
Identify the required steps in the correct sequence.
A. 1, 2, 3, 4, 6
B. 2, 5, 1, 6
C. 4, 2, 5, 1, 6 D. 2, 3, 1, 6
Answer: B
QUESTION 42
Which three tasks can be automatically performed by the Automatic Data
Optimization feature of Information lifecycle Management (ILM)? (Choose three.)
A. Tracking the most recent read time for a table segment in a user tablespace
B. Tracking the most recent write time for a table segment in a user tablespace
C. Tracking insert time by row for table rows
D. Tracking the most recent write time for a table block
E. Tracking the most recent read time for a table segment in the SYSAUX tablespace
F. Tracking the most recent write time for a table segment in the SYSAUX tablespace
Answer: A B D
Explanation
Incorrect:
Not E, Not F When Heat Map is enabled, all accesses are tracked by the in-memory
activity tracking module. Objects in the SYSTEM and SYSAUX tablespaces are not tracked.
* To implement your ILM strategy, you can use Heat Map in Oracle Database to track
data access and modification. Heat Map provides data access tracking at the segment-level
and data modification tracking at the segment and row level.
* To implement your ILM strategy, you can use Heat Map in Oracle Database to track
data access and modification. You can also use Automatic Data Optimization (ADO) to
automate the compression and movement of data between different
tiers of storage within the database.
References:
QUESTION 43
Which statement is true regarding the startup of a database instance?
A. The instance does not start up normally and requires manual media recovery after a
shutdown using the ABORT option.
B. Uncommitted transactions are rolled back during the startup of the database
instance after a shutdown using the immediate option.
C. There is no difference in the underlying mechanics of the startup whether the
database is shut down by using the IMMEDIATE option or the ABORT option.
D. Media recovery is required when the database is shut down by using either the
IMMEDIATE option or the ABORT option.
E. Instance recovery is not required if the database instance was shut down by using
SHUTDOWN IMMEDIATE.
Answer: E
QUESTION 44
You are required to migrate your 11.2.0.3 database as a pluggable database (PDB) to
a multitenant container database (CDB).
The following are the possible steps to accomplish this task:
1. Place all the user-defined tablespace in read-only mode on the source database.
2. Upgrade the source database to a 12c version.
3. Create a new PDB in the target container database.
4. Perform a full transportable export on the source database with the VERSION
parameter set to 12 using the expdp utility.
5. Copy the associated data files and export the dump file to the desired location in the
target database.
6. Invoke the Data Pump import utility on the new PDB database as a user with the
DATAPUMP_IMP_FULL_DATABASE role and specify the full transportable import options.
7. Synchronize the PDB on the target container database by using the
DBMS_PDS.SYNC_ODB function. Identify the correct order of the required steps.
A. 2, 1, 3, 4, 5, 6
B. 1, 3, 4, 5, 6, 7
C. 1, 4, 3, 5, 6, 7
D. 2, 1, 3, 4, 5, 6, 7
E. 1, 5, 6, 4, 3, 2
Answer: C
Explanation
1. Set user tablespaces in the source database to READ ONLY.
2. From the Oracle Database 11g Release 2 {11.2.0.3) environment, export the
metadata and any data residing in administrative tablespaces from the source database
using the FULL=Y and TRANSPORTABLE=ALWAYS parameters.
Note that the VER$ION=12 parameter is required only when
exporting from an Oracle Database llg Release 2 database:
3. Copy the tablespace data files from the source system to the destination system.
Note that the log file from the export operation will list the data files required to be moved.
4. Create a COB on the destination system, including a PDB into which you will
import the source database.
5. In the Oracle Database 12c environment, connect to the pre-created PDB and
import the dump file. The act of importing the dump file will plug the tablespace
data files into the destination PDB Oracle White Paper - Upgrading to Oracle Database 12c -August 2013
QUESTION 45
You plan to create a database by using the Database Configuration Assistant (DBCA),
with the following specifications:
– Applications will connect to the database via a middle tier.
– The number of concurrent user connections will be high.
– The database will have mixed workload, with the execution of complex BI queries
scheduled at night. Which DBCA
option must you choose to create the database?
A. a General Purpose database template with default memory allocation
B. a Data Warehouse database template, with the dedicated server mode option and AMM enabled
C. a General Purpose database template, with the shared server mode option and
Automatic Memory Management (AMM) enabled
D. a default database configuration
Answer: C
QUESTION 46
You notice a performance change in your production Oracle database and you want to
know which change has made this performance difference.
You generate the Compare Period Automatic Database Diagnostic Monitor (ADDM)
report to further investigation.
Which three findings would you get from the report? (Choose three.)
A. It detects any configuration change that caused a performance difference in both time periods.
B. It identifies any workload change that caused a performance difference in both time periods.
C. It detects the top wait events causing performance degradation.
D. It shows the resource usage for CPU, memory, and I/O in both time periods.
E. It shows the difference in the size of memory pools in both time periods.
F. It gives information about statistics collection in both time periods.
Answer: A B D
Explanation
Keyword: shows the difference.
* Full ADDM analysis across two AWR snapshot periods Detects causes, measure
effects, then correlates them Causes:
workload changes, configuration changes
Effects: regressed SQL, reach resource limits (CPU, I/O, memory, interconnect)
Makes actionable recommendations along with quantified impact
* Identify what changed
/ Configuration changes, workload changes
* Performance degradation of the database occurs when your database was
performing optimally in the past, such as 6 months ago, but has gradually degraded
to a point where it becomes noticeable to the users. The Automatic Workload
Repository (AWR) Compare Periods report enables you to compare database
performance between two periods of time.
While an AWR report shows AWR data between two snapshots
(or two points in time), the AWR Compare Periods
report shows the difference (ABE) between two periods
(or two AWR reports with a total of four snapshots). Using the
AWR Compare Periods report helps you to identify detailed performance attributes
and configuration settings that differ between two time periods.
References:
QUESTION 47
A database is open READ WRITE and the instance has multiple sessions some of
which have active transactions. You execute this command:
SQL> ALTER SYSTEM ENABLE RESTRICTED SESSION;
Which three are true about the active transactions? (Choose three.)
A. They may issue COMMIT OR ROLLBACK statements
B. They are suspended and unable to issue any statements
C. They may continue to issue DML statements
D. They are rolled back automatically
E. They may continue to issue queries
F. They are terminated immediately
Answer: B D F
QUESTION 48
Which two tasks can be performed on an external table? (Choose two.)
A. partitioning the table
B. creating an invisible index
C. updating the table by using an UPDATE statement
D. creating a public synonym
E. creating a view
Answer: D E
QUESTION 49
A user establishes a connection to a database instance by using an Oracle Net
connection. You want to ensure the following:
1. The user account must be locked after five unsuccessful login attempts.
2. Data read per session must be limited for the user.
3. The user cannot have more than three simultaneous sessions.
4. The user must have a maximum minutes session idle time before being logged off automatically.
How would you accomplish this?
A. by granting a secure application role to the user
B. by implementing Database Resource Manager
C. by using Oracle Label Security options
D. by assigning a profile to the user
Answer: D
QUESTION 50
Which two statements are true concerning dropping a pluggable database (PDB)? (Choose two.)
A. The PDB must be open in read-only mode.
B. The PDB must be in mount state.
C. The PDB must be unplugged.
D. The PDB data files are always removed from disk.
E. A dropped PDB can never be plugged back into a multitenant container database(CDB).
Answer: B C
QUESTION 51
You notice a performance change in your production Oracle 12c database.
You want to know which change caused this performance difference.
Which method or feature should you use?
A. Compare Period ADDM report
B. AWR Compare Period report
C. Active Session History (ASH) report
D. Taking a new snapshot and comparing it with a preserved snapshot
Answer: A
QUESTION 52
Examine the following impdp command to import a database over the network from a
pre-12c Oracle database (source):
Which three are prerequisites for successful execution of the command? (Choose three.)
A. The import operation must be performed by a user on the target database by a user with the
DATAPUMP_IMP_FULL_DATABASE role, and the database link must connect to a user with the
DATAPUMP_EXP_FULL_DATABASE role on the source database.
B. All the user-defined tablespaces must be in read-only mode on the source database.
C. The export dump file must be created before starting the import on the target database.
D. The source and target database must be running on the same operating system (OS)
with the same endianness.
E. The impdp operation must be performed by the same user that performed the expdp operation.
Answer: A B D
Explanation
In this case we have run the impdp without performing any conversion if endian
format is different then we have to first perform conversion.
QUESTION 53
You ran this command on a source database:
$> expdp hr/hr DIRECTORY=dumpdir DUMPFILE=emp1.dmp VIEWS_AS_TABLES=emp_dept
On the target database, you run this command:
$> impdp hr/hr DIRECTORY=dumpdir DUMPFILE=emp1.dmp VIEWS_AS_TABLES=emp_dept
Which two statements are true? (Choose two.)
A. The expdp operation exports all rows for tables contained in the defining query of the EMP_DEPT view
B. The impdp operation creates separate tables for each table contained in the defining
query of the EMP_DEPT view
C. The expdp operation exports all rows that are displayed when querying the
EMP_DEPT view with no filter
D. The impdp operation creates EMP_DEPT as a table
E. The expdp operation exports the table definitions for tables that are queried in the EMP_DEPT view.
F. The impdp operation creates EMP_DEPT as a view
Answer: D E
QUESTION 54
You have installed two 64G flash devices to support the Database Smart Flash Cache
feature on your database server that is running on Oracle Linux.
You have set the DB_SMART_FLASH_FILE parameter:
DB_FLASH_CACHE_FILE= ‘/dev/flash_device_1 ‘,’ /dev/flash_device_2’
How should the DB_FLASH_CACHE_SIZE be configured to use both devices?
A. Set DB_FLASH_CACHE_ZISE = 64G.
B. Set DB_FLASH_CACHE_ZISE = 64G, 64G
C. Set DB_FLASH_CACHE_ZISE = 128G.
D. DB_FLASH_CACHE_SIZE is automatically configured by the instance at startup.
Answer: B
Explanation
* Smart Flash Cache concept is not new in Oracle 12C - DB Smart Flash Cache in Oracle 11g.
In this release Oracle has made changes related to both initialization parameters used
by DB Smart Flash cache. Now you can define many files|devices and its sizes for
“Database Smart Flash Cache” area. In previous releases only one file|device could be defined.
DB_FLASH_CACHE_FILE = /dev/sda, /dev/sdb, /dev/sdc
DB_FLASH_CACHE_SIZE = 32G, 32G, 64G
So above settings defines 3 devices which will be in use by “DB Smart Flash Cache”
/dev/sda – size 32G
/dev/sdb – size 32G
/dev/sdc – size 64G
New view V$FLASHFILESTAT – it’s used to determine the cumulative latency and
read counts of each file|device and compute the average latency
QUESTION 55
Which three statements are true about adaptive SQL plan management? (Choose three.)
A. It automatically performs verification or evolves non-accepted plans, in
COMPREHENSIVE mode when they perform better than existing accepted plans.
B. The optimizer always uses the fixed plan, if the fixed plan exists in the plan baseline.
C. It adds new, bettor plans automatically as fixed plans to the baseline.
D. The non-accepted plans are automatically accepted and become usable by the
optimizer if they perform better than the existing accepted plans.
E. The non-accepted plans in a SQL plan baseline are automatically evolved, in
COMPREHENSIVE mode, during the nightly maintenance window and a persistent verification report is generated.
Answer: A D E
Explanation
With adaptive SQL plan management, DBAs no longer have to manually run the
verification or evolve process for non accepted plans. When automatic SQL tuning is in COMPREHENSIVE mode, it runs
a verification or evolve process for all SQL statements that have non-accepted plans during the nightly maintenance
window. If the non-accepted plan performs better than the existing accepted plan (or plans) in the SQL plan baseline,
then the plan is automatically accepted and becomes usable by the optimizer. After the verification is complete, a
persistent report is generated detailing how the non-accepted plan performs compared
to the accepted plan performance. Because the evolve process is now an AUTOTASK, DBAs can also schedule their
own evolve job at end time.
Note:
* The optimizer is able to adapt plans on the fly by predetermining multiple subplans for portions of the plan.
* Adaptive plans, introduced in Oracle Database 12c, enable the optimizer to defer the
final plan decision for a statement until execution time. The optimizer instruments its chosen plan (the default plan) with
statistics collectors so that it can detect at runtime, if its cardinality estimates differ greatly from the actual number of
rows seen by the operations in the plan. If there is a significant difference, then the plan or a portion of it will be
automatically adapted to avoid suboptimal performance on the first execution of a SQL statement.
References:
QUESTION 56
Which statement is true about the Log Writer process?
A. It writes when it receives a signal from the checkpoint process (CKPT).
B. It writes concurrently to all members of multiplexed redo log groups.
C. It writes after the Database Writer process writes dirty buffers to disk.
D. It writes when a user commits a transaction.
Answer: D
Explanation
References: http://docs.oracle.com/cd/B19306_01/server.102/b14220/process.htm
(see log writer process (LGWR))
QUESTION 57
Which three statements are true concerning the multitenant architecture? (Choose three.)
A. Each pluggable database (PDB) has its own set of background processes.
B. A PDB can have a private temp tablespace.
C. PDBs can share the sysaux tablespace.
D. Log switches occur only at the multitenant container database (CDB) level.
E. Different PDBs can have different default block sizes.
F. PDBs share a common system tablespace.
G. Instance recovery is always performed at the CDB level.
Answer: B D G
QUESTION 58
Your database is open and the listener LISTENER is up. You issue the command:
LSNRCTL> RELOAD
What is the effect of RELOAD on sessions that were originally established by LISTENER?
A. Only sessions based on static listener registrations are disconnected.
B. Existing connections are not disconnected; however, they cannot perform any
operations until the listener completes the re-registration of the database instance and service handlers.
C. The sessions are not affected and continue to function normally.
D. All the sessions are terminated and active transactions are rolled back.
Answer: C
QUESTION 59
Examine the structure of the SALES table, which is stored in a locally managed
tablespace with Automatic Segment Space Management (ASSM) enabled.
You want to perform online segment shrink to reclaim fragmented free space below
the high water mark. What should you ensure before the start of the operation?
A. Row movement is enabled. B. Referential integrity constraints for the table are disabled.
C. No queries are running on this table.
D. Extra disk space equivalent to the size of the segment is available in the tablespace.
E. No pending transaction exists on the table.
Answer: A
QUESTION 60
In your multitenant container database (CDB) with two pluggable database (PDBs).
You want to create a new PDB by using SQL Developer.
Which statement is true?
A. The CDB must be open.
B. The CDB must be in the mount stage.
C. The CDB must be in the nomount stage.
D. Alt existing PDBs must be closed.
Answer: A
QUESTION 61
Examine the memory-related parameters set in the SPFILE of an Oracle database:
Which statement is true?
A. Only SGA components are sized automatically.
B. Memory is dynamically re-allocated between the SGA and PGA as needed.
C. The size of the PGA cannot grow automatically beyond 500 MB.
D. The value of the MEMORY_TARGET parameter cannot be changed dynamically.
Answer: B
QUESTION 62
The ORCL database is configured to support shared server mode. You want to ensure
that a user connecting remotely to the database instance has a one-to-one ratio between client
and server processes. Which connection method guarantees that this requirement is met?
A. connecting by using an external naming method
B. connecting by using the easy connect method
C. creating a service in the database by using the DBMS_SERVICE.CREATE_SERVICE
procedure and using this service for creating a local naming service
D. connecting by using the local naming method with the SERVER = DEDICATED
parameter set in the tnsnames.ora file for the net service
E. connecting by using a directory naming method
Answer: D
QUESTION 63
You support Oracle Database 12c Oracle Database 11g, and Oracle Database log on
the same server. All databases of all versions use Automatic Storage Management (ASM).
Which three statements are true about the ASM disk group compatibility attributes
that are set for a disk group? (Choose three.)
A. The ASM compatibility attribute controls the format of the disk group metadata.
B. RDBMS compatibility together with the database version determines whether a
database Instance can mount the ASM disk group.
C. The RDBMS compatibility setting allows only databases set to the same version as
the compatibility value, to mount the ASM disk group.
D. The ASM compatibility attribute determines some of the ASM features that may
be used by the Oracle disk group.
E. The ADVM compatibility attribute determines the ACFS features that may be used
by the Oracle 10 g database.
Answer: A B D
QUESTION 64
To enable the Database Smart Flash Cache, you configure the following parameters:
DB_FLASH_CACHE_FILE = ‘/dev/flash_device_1’ , ‘/dev/flash_device_2’
DB_FLASH_CACHE_SIZE=64G
What is the result when you start up the database instance?
A. It results in an error because these parameter settings are invalid.
B. One 64G flash cache file will be used.
C. Two 64G flash cache files will be used.
D. Two 32G flash cache files will be used.
Answer: A
QUESTION 65
You upgrade your Oracle database in a multiprocessor environment.
As a recommended you execute the following script:
SQL > @utlrp.sql
Which two actions does the script perform? (Choose two.)
A. Parallel compilation of only the stored PL/SQL code
B. Sequential recompilation of only the stored PL/SQL code
C. Parallel recompilation of any stored PL/SQL code
D. Sequential recompilation of any stored PL/SQL code
E. Parallel recompilation of Java code
F. Sequential recompilation of Java code
Answer: C E
Explanation
utlrp.sql and utlprp.sql
The utlrp.sql and utlprp.sql scripts are provided by Oracle to recompile all invalid
objects in the database. They are typically run after major database changes
such as upgrades or patches. They are located in the
$ORACLE_HOME/rdbms/admin directory and provide a wrapper on the
UTL_RECOMP package. The utlrp.sql script simply calls the utlprp.sql
script with a command line parameter of "0". The utlprp.sql
accepts a single integer parameter that indicates the level of parallelism as follows.
0 - The level of parallelism is derived based on the CPU_COUNT parameter.
1 - The recompilation is run serially, one object at a time.
N - The recompilation is run in parallel with "N" number of threads.
Both scripts must be run as the SYS user, or another user with SYSDBA, to work correctly.
References:
QUESTION 66
You executed this command to create a password file: $ orapwd file = orapworcl entries = 10 ignorecase = N
Which two statements are true about the password file? (Choose two.)
A. It will permit the use of uppercase passwords for database users who have been
granted the SYSOPER role.
B. It contains username and passwords of database users who are members of the
OSOPER operating system group.
C. It contains usernames and passwords of database users who are members of the
OSDBA operating system group.
D. It will permit the use of lowercase passwords for database users who have granted
the SYSDBA role.
E. It will not permit the use of mixed case passwords for the database users who have
been granted the SYSDBA role.
Answer: A D
Explanation
* You can create a password file using the password file creation utility, ORAPWD.
* Adding Users to a Password File When you grant SYSDBA or SYSOPER privileges to a user,
that user's name and privilege information are added to the password file.
If the server does not have an EXCLUSIVE password file (that is, if the initialization parameter
REMOTE_LOGIN_PASSWORDFILE is NONE or SHARED, or the password file is missing),
Oracle Database issues an error if you attempt to grant these privileges.
A user's name remains in the password file only as long as that user has at least one of
these two privileges. If you revoke both of these privileges, Oracle Database removes the user from the password file.
* The syntax of the ORAPWD command is as follows:
ORAPWD FILE=filename [ENTRIES=numusers] [FORCE={Y|N}] [IGNORECASE={Y|N}] [NOSYSDBA={Y|N}]
* IGNORECASE
If this argument is set to y, passwords are case-insensitive. That is, case is ignored
when comparing the password that the user supplies during login with the password in the password file.
QUESTION 67
You notice that the elapsed time for an important database scheduler Job is
unacceptably long. The job belongs to a scheduler job class and window.
Which two actions would reduce the job's elapsed time? (Choose two.)
A. Increasing the priority of the job class to which the job belongs
B. Increasing the job's relative priority within the Job class to which it belongs
C. Increasing the resource allocation for the consumer group mapped to the scheduler
job's job class within the plan mapped to the scheduler window
D. Moving the job to an existing higher priority scheduler window with the same
schedule and duration
E. Increasing the value of the JOB_QUEUE_PROCESSES parameter
F. Increasing the priority of the scheduler window to which the job belongs
Answer: B C
QUESTION 68
Which two partitioned table maintenance operations support asynchronous Global
Index Maintenance in Oracle database 12c? (Choose two.)
A. ALTER TABLE SPLIT PARTITION
B. ALTER TABLE MERGE PARTITION
C. ALTER TABLE TRUNCATE PARTITION
D. ALTER TABLE ADD PARTITION
E. ALTER TABLE DROP PARTITION
F. ALTER TABLE MOVE PARTITION
Answer: C E
Explanation
Asynchronous Global Index Maintenance for DROP and TRUNCATE PARTITION
This feature enables global index maintenance to be delayed and decoupled from a
DROP and TRUNCATE partition without making a global index unusable. Enhancements include faster DROP and
TRUNCATE partition operations and the ability to delay index maintenance to off-peak time.
References:
QUESTION 69
You wish to enable an audit policy for all database users, except SYS, SYSTEM, and SCOTT.
You issue the following statements:
SQL> AUDIT POLICY ORA_DATABASE_PARAMETER EXCEPT SYS;
SQL> AUDIT POLICY ORA_DATABASE_PARAMETER EXCEPT SYSTEM;
SQL> AUDIT POLICY ORA_DATABASE_PARAMETER EXCEPT SCOTT;
For which database users is the audit policy now active?
A. All users except SYS
B. All users except SCOTT
C. All users except sys and SCOTT
D. All users except sys, system, and SCOTT
Answer: B
Explanation
If you run multiple AUDIT statements on the same unified audit policy but specify
different EXCEPT users, then Oracle Database uses the last exception user list,
not any of the users from the preceding lists. This means the effect of the
earlier AUDIT POLICY ... EXCEPT statements are overridden by the latest AUDIT POLICY
... EXCEPT statement.
Note:
* The ORA_DATABASE_PARAMETER policy audits commonly used Oracle
Database parameter settings. By default, this policy is not enabled.
* You can use the keyword ALL to audit all actions. The following example shows
how to audit all actions on the
HR.EMPLOYEES table, except actions by user pmulligan.
Example Auditing All Actions on a Table CREATE AUDIT POLICY
all_actions_on_hr_emp_pol ACTIONS ALL ON HR.EMPLOYEES;
AUDIT POLICY all_actions_on_hr_emp_pol EXCEPT pmulligan;
References:
QUESTION 70
An administrator account is granted the CREATE SESSION and SET CONTAINER
system privileges. A multitenant container database (CDB) instant has the following parameter set:
THREADED_EXECUTION = FALSE
Which four statements are true about this administrator establishing connections to
root in a CDB that has been opened in read only mode? (Choose four.)
A. You can conned as a common user by using the connect statement.
B. You can connect as a local user by using the connect statement.
C. You can connect by using easy connect.
D. You can connect by using OS authentication.
E. You can connect by using a Net Service name.
F. You can connect as a local user by using the SET CONTAINER statement.
Answer: A C D E
QUESTION 71
Your multitenant container database (CDB) contains a pluggable database, HR_PDB.
The default permanent tablespace in HR_PDB is USERDATA.
The container database (CDB) is open and you connect RMAN.
You want to issue the following RMAN command:
RMAN > BACKUP TABLESPACE hr_pdb:userdata;
Which task should you perform before issuing the command?
A. Place the root container in ARHCHIVELOG mode.
B. Take the user data tablespace offline.
C. Place the root container in the nomount stage.
D. Ensure that HR_PDB is open.
Answer: A
QUESTION 72
Which two statements are true about the logical storage structure of an Oracle
database? (Choose two.)
A. An extent contains data blocks that are always physically contiguous on disk.
B. An extent can span multiple segments.
C. Each data block always corresponds to one operating system block.
D. It is possible to have tablespaces of different block sizes.
E. A data block is the smallest unit of I/O in data files.
Answer: D E
QUESTION 73
Which two statements are true about variable extent size support for large ASM files?
(Choose two.) A. The metadata used to track extents in SGA is reduced.
B. Rebalance operations are completed faster than with a fixed extent size
C. An ASM Instance automatically allocates an appropriate extent size.
D. Resync operations are completed faster when a disk comes online after being taken offline.
E. Performance improves in a stretch cluster configuration by reading from a local copy of an extent.
Answer: A C
QUESTION 74
Which two statements are true about Oracle Managed Files (OMF)? (Choose two.)
A. OMF cannot be used in a database that already has data files created with user-specified directions.
B. The file system directions that are specified by OMF parameters are created automatically.
C. OMF can be used with ASM disk groups, as well as with raw devices, for better file management.
D. OMF automatically creates unique file names for table spaces and control files.
E. OMF may affect the location of the redo log files and archived log files.
Answer: D E
Explanation
D: The database internally uses standard file system interfaces to create and delete
files as needed for the following
database structures:
Tablespaces
Redo log files
Control files
Archived logs
Block change tracking files
Flashback logs
RMAN backups
Note:
* Using Oracle-managed files simplifies the administration of an Oracle Database.
Oracle-managed files eliminate the need for you, the DBA,
to directly manage the operating system files that make up an
Oracle Database. With Oracle managed files, you specify file system directories in which the database automatically
creates, names, and manages files at the database object level. For example, you need only specify that you want to
create a tablespace; you do not need to specify the name and path of the tablespace's datafile with the DATAFILE clause.
http://www.oracle-base.com/articles/9i/oracle-managed-files.php
http://docs.oracle.com/cd/B10500_01/server.920/a96521/omf.htm
References:
QUESTION 75
You notice a high number of waits for the db file scattered read and db file sequential
read events in the recent Automatic Database Diagnostic Monitor (ADDM) report.
After further investigation, you find that queries are performing too many full table
scans and indexes are not being used even though the filter columns are indexed.
Identify three possible reasons for this.
A. Missing or stale histogram statistics
B. Undersized shared pool
C. High clustering factor for the indexes
D. High value for the DB_FILE_MULTIBLOCK_READ_COUNT parameter
E. Oversized buffer cache
Answer: A C D
Explanation
D: DB_FILE_MULTIBLOCK_READ_COUNT is one of the parameters you can use
to minimize I/O during table scans.
It specifies the maximum number of blocks read in one I/O operation during a
sequential scan. The total number of I/Os needed to perform a full table scan depends on
such factors as the size of the table, the multiblock read count, and
whether parallel execution is being utilized for the operation.
QUESTION 76
Which three statements are true about a job chain? (Choose three.)
A. It can contain a nested chain of jobs.
B. It can be used to implement dependency-based scheduling.
C. It cannot invoke the same program or nested chain in multiple steps in the chain.
D. It cannot have more than one dependency.
E. It can be executed using event-based or time-based schedules.
Answer: A B E
QUESTION 77
In a recent Automatic Workload Repository (AWR) report for your database, you
notice a high number of buffer busy waits. The database consists of locally managed
tablespaces with free list managed segments.
On further investigation, you find that buffer busy waits is caused by contention on
data blocks. Which option would you consider first to decrease the wait event immediately?
A. Decreasing PCTUSED
B. Decreasing PCTFREE
C. Increasing the number of DBWN process
D. Using Automatic Segment Space Management (ASSM)
E. Increasing db_buffer_cache based on the V$DB_CACHE_ADVICE recommendation
Answer: D
Explanation
* Automatic segment space management (ASSM) is a simpler and more efficient way
of managing space within a segment. It completely eliminates any need to specify and
tune the pctused,freelists, and freelist groups storage parameters for schema objects
created in the tablespace. If any of these attributes are specified, they are ignored.
* Oracle introduced Automatic Segment Storage Management (ASSM) as a
replacement for traditional freelists management which used one-way linked-lists
to manage free blocks with tables and indexes. ASSM is commonly called "bitmap freelists"
because that is how Oracle implement the internal data structures for free block management.
Note:
* Buffer busy waits are most commonly associated with segment header contention
onside the data buffer pool (db_cache_size, etc.).
* The most common remedies for high buffer busy waits include database writer
(DBWR) contention tuning, adding freelists (or ASSM), and adding missing indexes.
QUESTION 78
You executed a DROP USER CASCADE on an Oracle 11g release 1 database and
immediately realized that you forgot to copy the OCA.EXAM_RESULTS table to the OCP schema.
The RECYCLE_BIN enabled before the DROP USER was executed and the OCP user has been granted the
FLASHBACK ANY TABLE system privilege. What is the quickest way to
recover the contents of the OCA.EXAM_RESULTS table to the OCP schema?
A. Execute FLASHBACK TABLE OCA.EXAM_RESULTS TO BEFORE DROP RENAME TO
OCP.EXAM_RESULTS; connected as SYSTEM.
B. Recover the table using traditional Tablespace Point In Time Recovery.
C. Recover the table using Automated Tablespace Point In Time Recovery.
D. Recovery the table using Database Point In Time Recovery.
E. Execute FLASHBACK TABLE OCA.EXAM_RESULTS TO BEFORE DROP
RENAME TO EXAM_RESULTS; connected as the OCP user.
Answer: C
Explanation
RMAN tablespace point-in-time recovery (TSPITR).
Recovery Manager (RMAN) TSPITR enables quick recovery of one or more
tablespaces in a database to an earlier time without affecting the rest of the tablespaces and objects in the database.
Fully Automated (the default) In this mode, RMAN manages the entire TSPITR process including the auxiliary
instance. You specify the tablespaces of the recovery set, an auxiliary destination, the target time, and you allow RMAN to
manage all other aspects of TSPITR.
The default mode is recommended unless you specifically need more control over the
location of recovery set files after TSPITR, auxiliary set files during TSPITR, channel settings and parameters or some
other aspect of your auxiliary instance.
QUESTION 79
You want to capture column group usage and gather extended statistics for better
cardinality estimates for the CUSTOMERS table in the SH schema.
Examine the following steps:
1. Issue the SELECT DBMS_STATS.CREATE_EXTENDED_STATS (‘SH’, ‘CUSTOMERS’) FROM dual statement.
2. Execute the DBMS_STATS.SEED_COL_USAGE (null, ‘SH’, 500) procedure.
3. Execute the required queries on the CUSTOMERS table.
4. Issue the SELECT DBMS_STATS.REPORT_COL_USAGE (‘SH’, ‘CUSTOMERS’) FROM dual statement.
Identify the correct sequence of steps.
A. 3, 2, 1, 4
B. 2, 3, 4, 1
C. 4, 1, 3, 2
D. 3, 2, 4, 1
Answer: B
Explanation
Step 1 (2). Seed column usage Oracle must observe a representative workload,
in order to determine the appropriate column groups. Using the new
procedure DBMS_STATS.SEED_COL_USAGE, you tell Oracle how long it should
observe the workload.
Step 2: (3) You don't need to execute all of the queries in your work during this
window. You can simply run explain plan for some of your longer running queries to
ensure column group information is recorded for these queries.
Step 3. (1) Create the column groups At this point you can get Oracle to automatically
create the column groups for each of the tables based on the usage
information captured during the monitoring window. You simply have to call the
DBMS_STATS.CREATE_EXTENDED_STATS function for each table.This
function requires just two arguments, the schema name and the table name.
From then on, statistics will be maintained for each column group whenever statistics
are gathered on the table.
Note:
* DBMS_STATS.REPORT_COL_USAGE reports column usage information and
records all the SQL operations the database has processed for a given object.
* The Oracle SQL optimizer has always been ignorant of the implied relationships
between data columns within the same table. While the optimizer has traditionally analyzed the distribution of values
within a column, he does not collect value-based relationships between columns.
* Creating extended statisticsHere are the steps to create extended statistics for related
table columns withdbms_stats.created_extended_stats:
1 - The first step is to create column histograms for the related columns.2 – Next, we
run dbms_stats.create_extended_stats to relate the columns together.
Unlike a traditional procedure that is invoked via an execute (“exec”) statement,
Oracle extended statistics are created via a select statement.
QUESTION 80
You are about to plug a multi-terabyte non-CDB into an existing multitenant
container database (CDB). The characteristics of the non-CDB are as follows:
– Version: Oracle Database 11g Release 2 (11.2.0.2.0) 64-bit
– Character set: AL32UTF8
– National character set: AL16UTF16
– O/S: Oracle Linux 6 64-bit
The characteristics of the CDB are as follows:
– Version: Oracle Database 12c Release 1 64-bit
– Character Set: AL32UTF8
– National character set: AL16UTF16
– O/S: Oracle Linux 6 64-bit
Which technique should you use to minimize down time while plugging this
non-CDB into the CDB? A. Transportable database
B. Transportable tablespace
C. Data Pump full export/import
D. The DBMS_PDB package
E. RMAN
Answer: B
Explanation
* Overview, example:
- Log into ncdb12c as sys
- Get the database in a consistent state by shutting it down cleanly.
- Open the database in read only mode
- Run DBMS_PDB.DESCRIBE to create an XML file describing the database.
- Shut down ncdb12c
- Connect to target CDB (CDB2)
- Check whether non-cdb (NCDB12c) can be plugged into CDB(CDB2)
- Plug-in Non-CDB (NCDB12c) as PDB(NCDB12c) into target CDB(CDB2).
- Access the PDB and run the noncdb_to_pdb.sql script.
- Open the new PDB in read/write mode.
* You can easily plug an Oracle Database 12c non-CDB into a CDB. Just create a
PDB manifest file for the non-CDB, and then use the manifest file to create a cloned PDB in the CDB.
* Note that to plug in a non-CDB database into a CDB, the non-CDB database needs to be of version 12c as well.
So existing 11g databases will need to be upgraded to 12c before they can be part of a 12c CDB.
QUESTION 81
Which two statements are true about SQL*Loader Express Mode in an Oracle 12c database? (Choose two.)
A. It loads data faster than conventional SQL*Loader
B. No data file needs to be specified
C. It can load data in parallel
D. It loads data more efficiently than conventional SQL*Loader
E. It requires Enterprise Manager Express to be configured
Answer: A C
QUESTION 82
You are the DBA supporting an Oracle 11g Release 2 database and wish to move a table containing several DATE,
CHAR, VARCHAR2, and NUMBER data types, and the table’s indexes, to another tablespace.
The table does not have a primary key and is used by an OLTP application.
Which technique will move the table and indexes while maintaining the highest level
of availability to the application?
A. Oracle Data Pump.
B. An ALTER TABLE MOVE to move the table and ALTER INDEX REBUILD to move the indexes.
C. An ALTER TABLE MOVE to move the table and ALTER INDEX REBUILD ONLINE to move the indexes.
D. Online Table Redefinition. E. Edition-Based Table Redefinition.
Answer: D
Explanation
* Oracle Database provides a mechanism to make table structure modifications
without significantly affecting the availability of the table. The mechanism is called online table redefinition. Redefining
tables online provides a substantial increase in availability compared to traditional methods of redefining tables.
* To redefine a table online:
Choose the redefinition method: by key or by rowid
* By key—Select a primary key or pseudo-primary key to use for the redefinition.
Pseudo-primary keys are unique keys with all component columns having NOT NULL constraints.
For this method, the versions of the tables before and after redefinition should have the same primary key columns.
This is the preferred and default method of redefinition.
* By rowid—Use this method if no key is available. In this method, a hidden column
named M_ROW$$ is added to the post-redefined version of the table.
It is recommended that this column be dropped or marked as unused after the
redefinition is complete. If COMPATIBLE is set to 10.2.0 or higher, the final phase
of redefinition automatically sets this column unused. You can then use the ALTER TABLE ... DROP UNUSED
COLUMNS statement to drop it. You cannot use this method on index-organized tables.
Note:
* When you rebuild an index, you use an existing index as the data source. Creating
an index in this manner enables you to change storage characteristics or move to a new tablespace.
Rebuilding an index based on an existing data source removes intra-block fragmentation.
Compared to dropping the index and using the CREATE INDEX statement,
recreating an existing index offers better performance.
Incorrect:
Not E: Edition-based redefinition enables you to upgrade the database component of
an application while it is in use, thereby minimizing or eliminating down time.
QUESTION 83
Your database is configured in ARCHIVELOG mode.
Examine the RMAN configuration parameters:
Examine the command:
RMAN> BACKUP DATABASE PLUS ARCHIVELOG DELETE INPUT;
Which two are true? (Choose two.)
A. It fails because the DELETE INPUT option can be used only with the BACKUP AS COPY command
B. It creates image copies of the archivelogs
C. It creates a backupset of archive log files
D. It creates image copies of the database files
E. It fails because the DELETE INPUT option can be used only with the BACKUP AS BACKUPSET command
Answer: B E
QUESTION 84
You use a recovery catalog for maintaining your database backups.
You execute the following command:
$rman TARGET / CATALOG rman / cat@catdb
RMAN > BACKUP VALIDATE DATABASE ARCHIVELOG ALL;
Which two statements are true? (Choose two.)
A. Corrupted blocks, if any, are repaired.
B. Checks are performed for physical corruptions.
C. Checks are performed for logical corruptions.
D. Checks are performed to confirm whether all database files exist in correct locations
E. Backup sets containing both data files and archive logs are created.
Answer: B D
Explanation
B (not C): You can validate that all database files and archived redo logs can be
backed up by running a command as follows:
RMAN> BACKUP VALIDATE DATABASE ARCHIVELOG ALL;
This form of the command would check for physical corruption. To check for logical corruption,
RMAN> BACKUP VALIDATE CHECK LOGICAL DATABASE ARCHIVELOG ALL;
D: You can use the VALIDATE keyword of the BACKUP command to do the following:
Check datafiles for physical and logical corruption Confirm that all database files exist and are in the correct locations.
Note:
You can use the VALIDATE option of the BACKUP command to verify that
database files exist and are in the correct locations (D), and have no physical or logical corruptions that would prevent RMAN
from creating backups of them. When performing a BACKUP...VALIDATE, RMAN reads the files to be backed up
in their entirety, as it would during a real backup. It does not, however, actually produce any backup sets or image copies
(Not A, not E).
QUESTION 85
You run a script that completes successfully using SQL*Plus that performs these
actions:
1. Creates a multitenant container database (CDB)
2. Plugs in three pluggable databases (PDBs)
3. Shuts down the CDB instance
4. Starts up the CDB instance using STARTUP OPEN READ WRITE
Which two statements are true about the outcome after running the script? (Choose two.)
A. The seed will be in mount state.
B. The seed will be opened read-only.
C. The seed will be opened read/write.
D. The other PDBs will be in mount state.
E. The other PDBs will be opened read-only.
F. The PDBs will be opened read/write.
Answer: B D
Explanation
B: The seed is always read-only. D: Pluggable databases can be started and stopped
using SQL*Plus commands or the ALTER PLUGGABLE DATABASE command.
QUESTION 86
Examine the following query output:
You issue the following command to import tables into the hr schema:
$ > impdp hr/hr directory = dumpdir dumpfile = hr_new.dmp schemas=hr TRANSFORM=DISABLE_ARCHIVE_LOGGING: Y
Which statement is true?
A. All database operations performed by the impdp command are logged.
B. Only CREATE INDEX and CREATE TABLE statements generated by the import are logged.
C. Only CREATE TABLE and ALTER TABLE statements generated by the import are logged.
D. None of the operations against the master table used by Oracle Data Pump to coordinate its activities are logged.
Answer: C
Explanation
Oracle Data Pump disable redo logging when loading data into tables and when creating indexes.
The new TRANSFORM option introduced in data pumps import provides the
flexibility to turn off the redo generation for the objects during the course of import.
The Master Table is used to track the detailed progress information of a Data Pump job.
The Master Table is created in the schema of the current user running the Pump
Dump export or import, and it keeps tracks of lots of detailed information.
QUESTION 87
You create a new pluggable database, HR_PDB, from the seed database. Which three
tablespaces are created by default in HR_PDB? (Choose three.)
A. SYSTEM
B. SYSAUX
C. EXAMPLE
D. UNDO
E. TEMP
F. USERS
Answer: A B E
Explanation * A PDB would have its SYSTEM, SYSAUX, TEMP tablespaces.
It can also contains other user created tablespaces in it.
* Oracle Database creates both the SYSTEM and SYSAUX tablespaces as part of every database.
* tablespace_datafile_clauses Use these clauses to specify attributes for all data files comprising the SYSTEM and
SYSAUX tablespaces in the seed PDB.
Incorrect:
Not D: a PDB can not have an undo tablespace. Instead, it uses the undo tablespace belonging to the CDB. Note:
* Example:
CONN pdb_admin@pdb1
SELECT tablespace_name FROM dba_tablespaces; TABLESPACE_NAME
------------------------------
SYSTEM
SYSAUX TEMP USERS SQL>
QUESTION 88
You execute the following commands to audit database activities:
SQL > ALTER SYSTEM SET AUDIT_TRIAL=DB, EXTENDED SCOPE=SPFILE;
SQL > AUDIT SELECT TABLE, INSERT TABLE, DELETE TABLE BY JOHN By SESSION WHENEVER SUCCESSFUL;
Which statement is true about the audit record that generated when auditing after instance restarts?
A. One audit record is created for every successful execution of a SELECT, INSERT
OR DELETE command on a table, and contains the SQL text for the SQL Statements.
B. One audit record is created for every successful execution of a SELECT, INSERT
OR DELETE command, and contains the execution plan for the SQL statements.
C. One audit record is created for the whole session if john successfully executes a
SELECT, INSERT, or DELETE command, and contains the execution plan for the SQL statements.
D. One audit record is created for the whole session if JOHN successfully executes a
select command, and contains the SQL text and bind variables used.
E. One audit record is created for the whole session if john successfully executes a SELECT, INSERT,
or DELETE command on a table, and contains the execution plan, SQL text, and bind variables used.
Answer: A
Explanation
Note:
* BY SESSION
In earlier releases, BY SESSION caused the database to write a single record for all
SQL statements or operations of the same type executed on the same schema objects in the same session.
Beginning with this release (11g) of Oracle Database, both BY SESSION and BY ACCESS cause Oracle Database to write one
audit record for each audited statement and operation.
* BY ACCESS Specify BY ACCESS if you want Oracle Database to write one record for each audited statement and operation.
Note:
If you specify either a SQL statement shortcut or a system privilege that audits a data
definition language (DDL) statement, then the database always audits by access. In all other cases, the database
honors the BY SESSION or BY ACCESS specification.
* For each audited operation, Oracle Database produces an audit record containing
this information: / The user performing the operation
/ The type of operation
/ The object involved in the operation
/ The date and time of the operation References:
QUESTION 89
Which four statements are true about database instance behavior? (Choose four.)
A. An idle instance is created when a STARTUP NOMOUNT is successful
B. All dynamic performance views (v$ views) return data when queried from a
session connected to an instance in NOMOUNT state
C. The consistency of redo logs and data files is checked when mounting the database
D. Redo log files can be renamed in MOUNT state
E. An SPFILE can be updated when connected to an idle instance
F. Datafiles can be renamed in MOUNT state
Answer: C D E F
QUESTION 90
Identify three scenarios in which you would recommend the use of SQL Performance
Analyzer to analyze impact on the performance of SQL statements.
A. Change in the Oracle Database version
B. Change in your network infrastructure
C. Change in the hardware configuration of the database server
D. Migration of database storage from non-ASM to ASM storage
E. Database and operating system upgrade
Answer: A C E
Explanation
Oracle 11g/12c makes further use of SQL tuning sets with the SQL Performance
Analyzer, which compares the performance of the statements in a tuning set before and after a database change.
The database change can be as major or minor as you like, such as:
* (E) Database, operating system, or hardware upgrades.
* (A, C) Database, operating system, or hardware configuration changes.
* Database initialization parameter changes.
* Schema changes, such as adding indexes or materialized views.
* Refreshing optimizer statistics.
* Creating or changing SQL profiles.
QUESTION 91
You execute the following piece of code with appropriate privileges:
User SCOTT has been granted the CREATE SESSION privilege and the MGR role.
Which two statements are true when a session logged in as SCOTT queries the SAL
column in the view and the table?
(Choose two.)
A. Data is redacted for the EMP.SAL column only if the SCOTT session does not have the MGR role set.
B. Data is redacted for EMP.SAL column only if the SCOTT session has the MGR role set.
C. Data is never redacted for the EMP_V.SAL column.
D. Data is redacted for the EMP_V.SAL column only if the SCOTT session has the MGR role set.
E. Data is redacted for the EMP_V.SAL column only if the SCOTT session does not have the MGR role set.
Answer: A C
Explanation
Note:
* DBMS_REDACT.FULL completely redacts the column data.
* DBMS_REDACT.NONE applies no redaction on the column data. Use this
function for development testing purposes.LOB columns are not supported.
* The DBMS_REDACT package provides an interface to Oracle Data Redaction,
which enables you to mask (redact) data that is returned from queries issued by low-privileged users or an application.
* If you create a view chain (that is, a view based on another view), then the Data
Redaction policy also applies throughout this view chain. The policies remain in effect all of the way up through
this view chain, but if another policy is created for one of these views, then for the columns affected in the subsequent
views, this new policy takes precedence.
QUESTION 92
What is the effect of specifying the "ENABLE PLUGGABLE DATABASE" clause
in a "CREATE DATABASE” statement?
A. It will create a multitenant container database (CDB) with only the root opened.
B. It will create a CDB with root opened and seed read only.
C. It will create a CDB with root and seed opened and one PDB mounted.
D. It will create a CDB that must be plugged into an existing CDB.
E. It will create a CDB with root opened and seed mounted.
Answer: B
Explanation
* The CREATE DATABASE ... ENABLE PLUGGABLE DATABASE SQL
statement creates a new CDB. If you do not specify the ENABLE PLUGGABLE DATABASE clause,
then the newly created database is a non-CDB and can never contain PDBs.
Along with the root (CDB$ROOT), Oracle Database automatically creates a seed
PDB (PDB$SEED). The following graphic shows a newly created CDB:
* Creating a PDB
Rather than constructing the data dictionary tables that define an empty PDB from
scratch, and then populating its Obj$ and Dependency$ tables, the empty
PDB is created when the CDB is created. (Here, we use empty to mean containing
no customer-created artifacts.) It is referred to as the seed PDB and has the name
PDB$Seed. Every CDB non-negotiably contains a seed PDB;
it is non-negotiably always open in read-only mode. This has no conceptual significance;
rather, it is just an optimization device. The create PDB operation is implemented as a special
case of the clone PDB operation.
QUESTION 93
Which three statements are true about using flashback database in a multitenant
container database (CDB)? (Choose three.)
A. The root container can be flashed back without flashing back the pluggable databases (PDBs).
B. To enable flashback database, the CDB must be mounted.
C. Individual PDBs can be flashed back without flashing back the entire CDB. D. The
DB_FLASHBACK RETENTION_TARGET parameter must be set to enable flashback of the CDB.
E. A CDB can be flashed back specifying the desired target point in time or an SCN, but not a restore point.
Answer: A B D
QUESTION 94
Which two statements are true about extents? (Choose two.)
A. Blocks belonging to an extent can be spread across multiple data files.
B. Data blocks in an extent are logically contiguous but can be non-contiguous on disk.
C. The blocks of a newly allocated extent, although free, may have been used before.
D. Data blocks in an extent are automatically reclaimed for use by other objects in a
tablespace when all the rows in a table are deleted.
Answer: B C
QUESTION 95
The HR user receives the following error while inserting data into the sales table:
On investigation, you find that the users tablespace uses Automatic Segment Space
Management (ASSM). It is the default tablespace for the HR user with an unlimited quota on it.
Which two methods would you use to resolve this error? (Choose two.)
A. Altering the data file associated with the USERS tablespace to extend automatically
B. Adding a data file to the USERS tablespace
C. Changing segment space management for the USERS tablespace to manual
D. Creating a new tablespace with autoextend enabled and changing the default
tablespace of the HR user to the new tablespace
E. Enabling resumable space allocation by setting the RESUMABLE_TIMEOUT
parameter to a nonzero value
Answer: A B
QUESTION 96
Identify two correct statements about multitenant architectures.
A. Multitenant architecture can be deployed only in a Real Application Clusters (RAC) configuration.
B. Multiple pluggable databases (PDBs) share certain multitenant container database (CDB) resources.
C. Multiple CDBs share certain PDB resources.
D. Multiple non-RAC CDB instances can mount the same PDB as long as they are on the same server.
E. Patches are always applied at the CDB level.
F. A PDB can have a private undo tablespace.
Answer: B E
Explanation
B: Using 12c Resource manager you will be able control CPU, Exadata I/O, sessions
and parallel servers. A new 12c CDB Resource Manager Plan will use so-called “Shares” (resource allocations) to
specify how CPU is distributed between PDBs. A CDB Resource Manager Plan also can use “utilization
limits” to limit the CPU usage for a PDB. With a default directive, you do not need to modify the resource plan for each
PDB plug and unplug. E: New paradigms for rapid patching and upgrades.
The investment of time and effort to patch one multitenant container database results
in patching all of its many pluggable databases. To patch a single pluggable database,
you simply unplug/plug to a multitenant container database at a different Oracle Database software version.
Incorrect:
Not A:
* The Oracle RAC documentation describes special considerations for a CDB in an
Oracle RAC environment.
* Oracle Multitenant is a new option for Oracle Database 12c Enterprise Edition that
helps customers reduce IT costs by simplifying consolidation, provisioning, upgrades, and more.
It is supported by a new architecture that allows a container database to hold many
pluggable databases. And it fully complements other options, including Oracle Real Application Clusters and Oracle
Active Data Guard. An existing database can be simply adopted, with no change, as a pluggable database; and no
changes are needed in the other tiers of the application.
Not D: You can unplug a PDB from one CDB and plug it into a different CDB
without altering your schemas or applications. A PDB can be plugged into only one CDB at a time.
not F:
* UNDO tablespace can NOT be local and stays on the CDB level.
* Redo and undo go hand in hand, and so the CDB as a whole has a single undo tablespace per RAC instance.
QUESTION 97
Which two statements are true about the Oracle Direct Network File system (DNFS)?
(Choose two.)
A. It utilizes the OS file system cache.
B. A traditional NFS mount is not required when using Direct NFS.
C. Oracle Disk Manager can manage NFS on its own, without using the operating kernel NFS driver.
D. Direct NFS is available only in UNIX platforms.
E. Direct NFS can load-balance I/O traffic across multiple network adapters.
Answer: C E
Explanation
E: Performance is improved by load balancing across multiple network interfaces (if available).
Note:
* To enable Direct NFS Client, you must replace the standard Oracle Disk Manager
(ODM) library with one that supports Direct NFS Client.
Incorrect:
Not A: Direct NFS Client is capable of performing concurrent direct I/O, which
bypasses any operating system level caches and eliminates any operating system write-ordering locks
Not B:
* To use Direct NFS Client, the NFS file systems must first be mounted and available
over regular NFS mounts.
* Oracle Direct NFS (dNFS) is an optimized NFS (Network File System) client that
provides faster and more scalable access to NFS storage located on NAS storage devices (accessible over TCP/IP).
Not D: Direct NFS is provided as part of the database kernel, and is thus available on all supported database platforms -
even those that don't support NFS natively, like Windows. Note:
* Oracle Direct NFS (dNFS) is an optimized NFS (Network File System) client that
provides faster and more scalable access to NFS storage located on NAS storage devices (accessible over TCP/IP).
Direct NFS is built directly into the database kernel - just like ASM which is mainly used when using DAS or SAN storage.
* Oracle Direct NFS (dNFS) is an internal I/O layer that provides faster access to
large NFS files than traditional NFS clients.
QUESTION 98
You install a non-RAC Oracle Database. During Installation, the Oracle Universal
Installer (OUI) prompts you to enter the path of the Inventory directory and
also to specify an operating system group name.
Which statement is true?
A. The ORACLE_BASE base parameter is not set.
B. The installation is being performed by the root user.
C. The operating system group that is specified should have the root user as its member.
D. The operating system group that is specified must have permission to write to the inventory directory.
Answer: D
Explanation
Note:
Providing a UNIX Group Name If you are installing a product on a UNIX system,
the Installer will also prompt you to provide the name of the group which should own the base directory.
You must choose a UNIX group name which will have permissions to update, install,
and deinstall Oracle software. Members of this group must have write permissions to the base directory chosen.
Only users who belong to this group are able to install or deinstall software on this machine.
QUESTION 99
As a user of the ORCL database, you establish a database link to the remote HQ database
such that all users in the ORCL database may access tables only from the SCOTT schema in the HQ database.
SCOTT’s password is TIGER. The service mane “HQ” is used to connect to the remote HQ database.
Which command would you execute to create the database link?
A. CREATE DATABASE LINK HQ USING 'HQ';
B. CREATE DATABASE LINK HQ CONNECT TO CURRENT_USER USING ‘HQ’;
C. CREATE PUBLIC DATABASE LINK HQ CONNECT TO scott IDENTIFIED BY tiger USING 'HQ';
D. CREATE DATABASE LINK HQ CONNECT TO scott IDENTIFIED BY tiger USING 'HQ';
Answer: C
QUESTION 100
Which three statements are true concerning unplugging a pluggable database (PDB)?
(Choose three.)
A. The PDB must be open in read only mode.
B. The PDB must be dosed.
C. The unplugged PDB becomes a non-CDB.
D. The unplugged PDB can be plugged into the same multitenant container database (CDB)
E. The unplugged PDB can be plugged into another CDB. F. The PDB data files are
automatically removed from disk.
Answer: B D E
QUESTION 101
Identify three valid options for adding a pluggable database (PDB) to an existing
multitenant container database (CDB).
A. Use the CREATE PLUGGABLE DATABASE statement to create a PDB using
the files from the SEED.
B. Use the CREATE DATABASE . . . ENABLE PLUGGABLE DATABASE
statement to provision a PDB by copying file from the SEED.
C. Use the DBMS_PDB package to clone an existing PDB.
D. Use the DBMS_PDB package to plug an Oracle 12c non-CDB database into an existing CDB.
E. Use the DBMS_PDB package to plug an Oracle 11 g Release 2 (11.2.0.3.0)
non-CDB database into an existing CDB.
Answer: A C D
Explanation
Use the CREATE PLUGGABLE DATABASE statement to create a pluggable
database (PDB).
This statement enables you to perform the following tasks:
* (A) Create a PDB by using the seed as a template
Use the create_pdb_from_seed clause to create a PDB by using the seed in the
multitenant container database (CDB) as a template. The files associated with the seed
are copied to a new location and the copied files are then associated with the
new PDB.
* (C) Create a PDB by cloning an existing PDB
Use the create_pdb_clone clause to create a PDB by copying an existing PDB (the
source PDB) and then plugging the copy into the CDB. The files associated with the source PDB are copied to a new
location and the copied files are associated with the new PDB. This operation is called cloning a PDB.
The source PDB can be plugged in or unplugged. If plugged in, then the source PDB
can be in the same CDB or in a remote CDB. If the source PDB is in a remote CDB,
then a database link is used to connect to the remote CDB and copy
the files.
* Create a PDB by plugging an unplugged PDB or a non-CDB into a CDB
Use the create_pdb_from_xml clause to plug an unplugged PDB or a non-CDB into a
CDB, using an XML metadata file.
QUESTION 102
Identify three valid methods of opening, pluggable databases (PDBs).
A. ALTER PLUGGABLE DATABASE OPEN ALL ISSUED from the root
B. ALTER PLUGGABLE DATABASE OPEN ALL ISSUED from a PDB
C. ALTER PLUGGABLE DATABASE PDB OPEN issued from the seed
D. ALTER DATABASE PDB OPEN issued from the root
E. ALTER DATABASE OPEN issued from that PDB F. ALTER PLUGGABLE
DATABASE PDB OPEN issued from another PDB
G. ALTER PLUGGABLE DATABASE OPEN issued from that PDB
Answer: A E G
Explanation
E: You can perform all ALTER PLUGGABLE DATABASE tasks by connecting to a
PDB and running the corresponding ALTER DATABASE statement. This functionality is provided to
maintain backward compatibility for applications that have been migrated to a CDB environment.
AG: When you issue an ALTER PLUGGABLE DATABASE OPEN statement,
READ WRITE is the default unless a PDB being opened belongs to a CDB that is used as a physical standby database,
in which case READ ONLY is the default.
You can specify which PDBs to modify in the following ways: List one or more PDBs.
Specify ALL to modify all of the PDBs.
Specify ALL EXCEPT to modify all of the PDBs, except for the PDBs listed.
QUESTION 103
You want a job that performs a bulk insert as soon as the loader file arrives on the local file system.
Which two would you do to accomplish this? (Choose two.)
A. Create a file watcher
B. Create a bulk loader watcher
C. Create a light weight job for bulk insert
D. Create an event-based job for bulk insert
E. Create a job chain with a step for bulk insert
Answer: A D
QUESTION 104
Your database supports a DSS workload that involves the execution of complex
queries: Currently, the library cache contains the ideal workload for analysis. You
want to analyze some of the queries for an application that are cached in the library cache.
What must you do to receive recommendations about the efficient use of indexes and
materialized views to improve query performance?
A. Create a SQL Tuning Set (STS) that contains the queries cached in the library
cache and run the SQL Tuning Advisor (STA) on the workload captured in the STS.
B. Run the Automatic Workload Repository Monitor (ADDM).
C. Create an STS that contains the queries cached in the library cache and run the
SQL Performance Analyzer (SPA) on the workload captured in the STS.
D. Create an STS that contains the queries cached in the library cache and run the
SQL Access Advisor on the workload captured in the STS.
Answer: D
QUESTION 105
Which two must be installed or configured either manually or by DBCA in order to
use Enterprise Manager Database Express (EM Express)? (Choose two.)
A. A port number for Oracle HTTP Server must be configured
B. The APEX_PUBLIC_USER role must be granted to SYSMAN
C. A SYSMAN user with SYSDBA privilege must be created
D. At least one TCP/IP dispatcher must be configured
E. The Oracle HTTP Server must be installed
Answer: B D
QUESTION 106
Which three features work together, to allow a SQL statement to have different
cursors for the same statement based on different selectivity ranges? (Choose three.)
A. Bind Variable Peeking
B. SQL Plan Baselines
C. Adaptive Cursor Sharing
D. Bind variable used in a SQL statement
E. Literals in a SQL statement
Answer: A C D
QUESTION 107
You must track all transactions that modify certain tables in the sales schema for at
least three years. Automatic undo management is enabled for the database with a retention of one day.
Which two must you do to track the transactions? (Choose two.)
A. Enable supplemental logging for the database.
B. Specify undo retention guarantee for the database.
C. Create a Flashback Data Archive in the tablespace where the tables are stored.
D. Create a Flashback Data Archive in any suitable tablespace.
E. Enable Flashback Data Archiving for the tables that require tracking.
Answer: D E
Explanation
E: By default, flashback archiving is disabled for any table. You can enable flashback archiving for a table
if you have the FLASHBACK ARCHIVE object privilege on the Flashback Data Archive that
you want to use for that table.
D: Creating a Flashback Data Archive
/ Create a Flashback Data Archive with the CREATE FLASHBACK ARCHIVE
statement, specifying the following:
Name of the Flashback Data Archive Name of the first tablespace of the Flashback Data Archive
(Optional) Maximum amount of space that the Flashback Data Archive can use in the first tablespace
/ Create a Flashback Data Archive named fla2 that uses tablespace tbs2, whose data
will be retained for two years:
CREATE FLASHBACK ARCHIVE fla2 TABLESPACE tbs2 RETENTION 2 YEAR;
QUESTION 108
You are planning the creation of a new multitenant container database (CDB) and
want to store the ROOT and SEED container data files in separate directories.
You plan to create the database using SQL statements.
Which three techniques can you use to achieve this? (Choose three.)
A. Use Oracle Managed Files (OMF).
B. Specify the SEED FILE_NAME_CONVERT clause.
C. Specify the PDB_FILE_NAME_CONVERT initialization parameter.
D. Specify the DB_FILE_NAMECONVERT initialization parameter.
E. Specify all files in the CREATE DATABASE statement without using Oracle managed Files (OMF).
Answer: A B C
Explanation
You must specify the names and locations of the seed's files in one of the following
ways:
* (A) Oracle Managed Files
* (B) The SEED FILE_NAME_CONVERT Clause
* (C) The PDB_FILE_NAME_CONVERT Initialization Parameter
QUESTION 109
Examine the parameters for your database instance:
You execute the following command:
SQL> ALTER TABLESPACE undotbs1 RETENTION NOGUARANTEE;
Which statement is true in this scenario?
A. Undo data is written to flashback logs after 1200 seconds.
B. Inactive undo data is retained for 1200 seconds even if subsequent transactions fail
due to lack of space in the undo tablespace.
C. You can perform a Flashback Database operation only within the duration seconds.
D. An attempt is made to keep inactive undo for 1200 seconds but transactions may
overwrite the undo before that time has elapsed.
Answer: D
QUESTION 110
Which four actions are possible during an Online Data file Move operation? (Choose four.)
A. Creating and dropping tables in the data file being moved
B. Performing file shrink of the data file being moved
C. Querying tables in the data file being moved
D. Performing Block Media Recovery for a data block in the data file being moved
E. Flashing back the database
F. Executing DML statements on objects stored in the data file being moved
Answer: A C E F
Explanation
- You can now move On line Datafile without hove to stop Monoged Recovery and
manually copy and rename Files.
This can even be used to move Datafiles from or to ASM.
- New in Oracle Database 12c: FROM METAUNK. Physical Standby Database is in
Active Data Guard Mode (opened READ ONLY and Managed Recovery is running):
It is now possible to online move a Datafile while Managed Recovery is running, ie.
the Physical Standby Database is in Active Data Guard Mode. You con use this Command to move the Datafile
- A flashback operation does not relocate a moved data file to its previous location.
If you move a data file online from one location to another and later flash back the database to a point in time before the
move, then the Data file remains in the new location, but the contents of the Data file ore changed to the contents at the
time specified in the flashback. Oracle0 Database Administrator's Guide 12c Release 1 (12.1)
QUESTION 111
You upgraded your database from pre-12c to a multitenant container database (CDB)
containing pluggable databases (PDBs).
Examine the query and its output:
Which two tasks must you perform to add users with SYSBACKUP, SYSDG, and
SYSKM privilege to the password file? (Choose two.)
A. Assign the appropriate operating system groups to SYSBACKUP, SYSDG,
SYSKM. B. Grant SYSBACKUP, SYSDG, and SYSKM privileges to the intended users.
C. Re-create the password file with SYSBACKUP, SYSDG, and SYSKM privilege
and the FORCE argument set to No.
D. Re-create the password file with SYSBACKUP, SYSDG, and SYSKM privilege,
and FORCE arguments set to Yes.
E. Re-create the password file in the Oracle Database 12c format.
Answer: B D
Explanation
* orapwd
/ You can create a database password file using the password file creation utility,
ORAPWD. The syntax of the
ORAPWD command is as follows:
orapwd FILE=filename [ENTRIES=numusers] [FORCE={y|n}] [ASM={y|n}] [DBUNIQUENAME=dbname]
[FORMAT={12|legacy}] [SYSBACKUP={y|n}] [SYSDG={y|n}] [SYSKM={y|n}] [DELETE={y|n}]
[INPUT_FILE=input-fname]
force - whether to overwrite existing file (optional), * v$PWFILE_users
/ 12c: V$PWFILE_USERS lists all users in the password file, and indicates whether
the user has been granted the
SYSDBA, SYSOPER, SYSASM, SYSBACKUP, SYSDG, and SYSKM privileges.
/ 10c: sts users who have been granted SYSDBA and SYSOPER privileges as derived
from the password file.
ColumnDatatypeDescription
USERNAMEVARCHAR2(30)The name of the user that is contained in the password
file SYSDBAVARCHAR2(5)If TRUE, the user can connect with SYSDBA privileges
SYSOPERVARCHAR2(5)If TRUE, the user can connect with SYSOPER privileges Incorrect:
not E: The format of the v$PWFILE_users file is already in 12c format.
QUESTION 112
You created a new database using the "create database" statement without specifying
the "ENABLE PLUGGABLE" clause.
What are two effects of not using the "ENABLE PLUGGABLE database" clause?
A. The database is created as a non-CDB and can never contain a PDB.
B. The database is treated as a PDB and must be plugged into an existing multitenant container database (CDB).
C. The database is created as a non-CDB and can never be plugged into a CDB.
D. The database is created as a non-CDB but can be plugged into an existing CDB.
E. The database is created as a non-CDB but will become a CDB whenever the first PDB is plugged in.
Answer: A D
Explanation
A (not B,not E): The CREATE DATABASE ... ENABLE PLUGGABLE
DATABASE SQL statement creates a new CDB. If you do not specify the ENABLE PLUGGABLE DATABASE clause,
then the newly created database is a non CDB and can never contain PDBs.
D: You can create a PDB by plugging in a Non-CDB as a PDB.
The following graphic depicts the options for creating a PDB:
Incorrect:
Not E: For the duration of its existence, a database is either a CDB or a non-CDB.
You cannot transform a non-CDB into a CDB or vice versa. You must define a database as a CDB at creation,
and then create PDBs within this CDB.
QUESTION 113
Which three statements are true about Automatic Workload Repository (AWR)?
(Choose three.)
A. All AWR tables belong to the SYSTEM schema.
B. The AWR data is stored in memory and in the database.
C. The snapshots collected by AWR are used by the self-tuning components in the database
D. AWR computes time model statistics based on time usage for activities, which are
displayed in the v$SYS time model and V$SESS_TIME_MODEL views.
E. AWR contains system wide tracing and logging information.
Answer: B C D
QUESTION 114
Which Oracle Database component is audited by default if the unified Auditing option is enabled?
A. Oracle Data Pump
B. Oracle Recovery Manager (RMAN)
C. Oracle Label Security
D. Oracle Database Vault
E. Oracle Real Application Security
Answer: B
QUESTION 115
What is the result of executing a TRUNCATE TABLE command on a table that has
Flashback Archiving enabled?
A. It fails with the ORA-665610 Invalid DDL statement on history-tracked message
B. The rows in the table are truncated without being archived.
C. The rows in the table are archived, and then truncated.
D. The rows in both the table and the archive are truncated.
Answer: C
QUESTION 116
You want to schedule a job to rebuild a table’s indexes after a bulk insert, which must
be scheduled as soon as a file containing data arrives on the system.
What would you do to accomplish this?
A. Create a file watcher and an event-based job for bulk insert and then create another
job to rebuild indexes on the table.
B. Create a file watcher for the bulk inserts and then create a job to rebuild indexes.
C. Create a job array and add a job for bulk insert and a job to rebuild indexes to the job array.
D. Create an event-based job for the file arrival event, then create a job for bulk insert,
and then create a job to rebuild indexes.
Answer: A
QUESTION 117
You plan to install the Oracle Database 12c software on a new server. The database
will use Automatic Storage Management (ASM) and Oracle Restart.
Oracle Grid Infrastructure for a standalone server is already installed on the server.
You want to configure job role separation. You create the following operating system users and groups:
- The user oracle as the owner of the Oracle database installation
- The user grid as the owner of Oracle Grid Infrastructure
- The group oinstall as an Oracle Inventory group
- The group dba as the OSDBA group for Oracle database
- The group asmdba as the OSDBA group for Oracle ASM
- The group asmadmin as the administration privileges group for Oracle ASM
- The group asmoper as the group for Oracle ASM
Which two additional tasks should you perform with regard to the OS-level owners
and groups? (Choose two.)
A. creating a separate central inventory group for the Oracle Database 12c installation
B. assigning oinstall as the primary group for the oracle user
C. assigning asmadmin and asmoper as primary groups for the oracle user
D. creating OS groups associated with the OSBACKUPDBA, OSDGDBA, and OSKMDBA system privileges
E. assigning asmdba as the secondary group for the oracle user
Answer: B D
QUESTION 118
Examine the commands executed to monitor database operations:
$> conn sys oracle/oracle@prod as sysdba SQL > VAR eid NUMBER
SQL > EXEC: eid := DBMS_SQL_MONITOR.BEGIN_OPERATION (‘batch_job’ , FORCED_TRACKING => ‘Y’);
Which two statements are true? (Choose two.)
A. Database operations will be monitored only when they consume a significant
amount of resource. B. Database operations for all sessions will be monitored.
C. Database operations will be monitored only if the STATISTICS_LEVEL
parameter is set to TYPICAL and CONTROL_MANAGEMENT_PACK_ACCESS is set DIAGNISTIC + TUNING.
D. Only DML and DDL statements will be monitored for the session.
E. All subsequent statements in the session will be treated as one database operation and will be monitored.
Answer: C E
Explanation
C: Setting the CONTROL_MANAGEMENT_PACK_ACCESS initialization
parameter to DIAGNOSTIC+TUNING (default) enables monitoring of database operations.
Real-Time SQL Monitoring is a feature of the Oracle Database Tuning Pack.
Note:
* The DBMS_SQL_MONITOR package provides information about Real-time SQL
Monitoring and Real-time Database Operation Monitoring.
*(not B) BEGIN_OPERATION Function starts a composite database operation in the current session.
/ (E) FORCE_TRACKING - forces the composite database operation to be tracked
when the operation starts. You can also use the string variable 'Y'.
/ (not A) NO_FORCE_TRACKING - the operation will be tracked only when it has
consumed at least 5 seconds of CPU or I/O time. You can also use the string variable 'N'.
QUESTION 119
You set the following parameters in the parameter file and restart the database
instance: Which two statements are true? (Choose two.)
A. The MEMORY_MAX_TARGET parameter is automatically set to 500 MB.
B. The PGA_AGGREGATE_TARGET and SGA_TARGET parameters are automatically set to zero.
C. The value of the MEMORY_MAX_TARGET parameter remains zero for the database instance.
D. The lower limits of the PGA_AGGREGATE_TARGET and SGA_TARGET parameters are set to 90 MB and 270
MB respectively.
E. The instance does not start up because Automatic Memory Management (AMM) is enabled but
PGA_AGGREGATE_TARGET and SGA_TARGET parameters are set to nonzero values.
Answer: A D
QUESTION 120
You upgraded from a previous Oracle database version to Oracle Database version to
Oracle Database 12c. Your database supports a mixed workload.
During the day, lots of insert, update, and delete operations are performed. At night,
Extract, Transform, Load (ETL) and batch reporting jobs are run. The ETL jobs
perform certain database operations using two or more concurrent sessions.
After the upgrade, you notice that the performance of ETL jobs has degraded. To
ascertain the cause of performance degradation, you want to collect basic statistics
such as the level of parallelism, total database time, and the number of
I/O requests for the ETL jobs.
How do you accomplish this?
A. Examine the Active Session History (ASH) reports for the time period of the ETL
or batch reporting runs.
B. Enable SQL tracing for the queries in the ETL and batch reporting queries and
gather diagnostic data from the trace file.
C. Enable real-time SQL monitoring for ETL jobs and gather diagnostic data from the
V$SQL_MONITOR view.
D. Enable real-time database operation monitoring using the
DBMS_SQL_MONITOR.BEGIN_OPERATION function, and then use the
DBMS_SQL_MONITOR.REPORT_SQL_MONITOR function to view the required information.
Answer: D
Explanation
* Monitoring database operations
Real-Time Database Operations Monitoring enables you to monitor long running
database tasks such as batch jobs, scheduler jobs, and Extraction, Transformation,
and Loading (ETL) jobs as a composite business operation. This feature
tracks the progress of SQL and PL/SQL queries associated with the business
operation being monitored. As a DBA or developer, you can define business operations
for monitoring by explicitly specifying the start and end of the operation or implicitly with tags that identify the operation.
QUESTION 121
You plan to implement the distributed database system in your company. You invoke
Database Configuration Assistant (DBCA) to create a database on the server.
During the installation, DBCA prompts you to specify the Global Database Name.
What must this name be made up of?
A. It must be made up of a database name and a domain name.
B. It must be made up of the value in ORACLE_SID and HOSTNAME.
C. It must be made up of the value that you plan to assign for INSTANCE_NAME and HOSTNAME.
D. It must be made up of the value that you plan to assign for ORACLE_SID and SERVICE_NAMES.
Answer: A
Explanation
Using the DBCA to Create a Database (continued)
3. Database Identification: Enter the Global Database Name in The form
database_name.domain_name, and the system identifier (SID). The SID
defaults lo the database name and uniquely identifies the instance associated with the database.
4. Management Options: Use this page to set up your database so that it can be
managed with Oracle Enterprise Manager.
Select the default: "Configure the Database with Enterprise Manager." Optionally,
this page allows you to configure alert notifications and daily disk backup area settings.
Note: Yon must configure the listener before you can configure Enterprise Manager (as shown earlier).
QUESTION 122
Which three resources might be prioritized between competing pluggable databases
when creating a multitenant container database plan (CDB plan) using Oracle Database Resource Manager?
(Choose three.)
A. Maximum Undo per consumer group
B. Maximum Idle time
C. Parallel server limit D. CPU
E. Exadata I/O
F. Local file system I/O
Answer: C D E
QUESTION 123
Examine the following commands for redefining a table with Virtual Private Database (VPD) policies:
Which two statements are true about redefining the table? (Choose two.)
A. All the triggers for the table are disabled without changing any of the column
names or column types in the table.
B. The primary key constraint on the EMPLOYEES table is disabled during redefinition.
C. VPD policies are copied from the original table to the new table during online redefinition.
D. You must copy the VPD policies manually from the original table to the new table during online redefinition.
Answer: B C
Explanation
C (not D): CONS_VPD_AUTO
Used to indicate to copy VPD policies automatically
* DBMS_RLS.ADD_POLICY
/ The DBMS_RLS package contains the fine-grained access control administrative
interface, which is used to implement Virtual Private Database (VPD).DBMS_RLS
is available with the Enterprise Edition only.
Note: * CONS_USE_PK and CONS_USE_ROWID are constants used as input to the
"options_flag" parameter in both the START_REDEF_TABLE Procedure and CAN_REDEF_TABLE Procedure.
CONS_USE_ROWID is used to indicate that the redefinition should be done using rowids while CONS_USE_PK implies that
the redefinition should be done using primary keys or pseudo-primary keys
(which are unique keys with all component columns having NOT NULL constraints).
* DBMS_REDEFINITION.START_REDEF_TABLE
To achieve online redefinition, incrementally maintainable local materialized views
are used. These logs keep track of the changes to the master tables and are used by
the materialized views during refresh synchronization.
* START_REDEF_TABLE Procedure
Prior to calling this procedure, you must manually create an empty interim table (in
the same schema as the table to be redefined) with the desired attributes of the post-redefinition table,
and then call this procedure to initiate the redefinition.
QUESTION 124
Your production database uses file system storage. You want to move storage to
Oracle Automatic Storage Management (ASM).
How would you achieve this?
A. by using a transportable database
B. by using the Database Upgrade Assistant (DBUA)
C. by using Data Pump
D. by using RMAN
Answer: D
QUESTION 125
You find this query being used in your Oracle 12c database:
Which method a used by the optimizer to limit the rows being returned?
A. A filter is added to the table query dynamically using ROWNUM to limit the rows
to 20 percent of the total rows
B. All the rows are returned to the client or middle tier but only the first 20 percent
are returned to the screen or the application.
C. A view is created during execution and a filter on the view limits the rows to 20
percent of the total rows.
D. A TOP-N query is created to limit the rows to 20 percent of the total rows
Answer: C
QUESTION 126
Which statement is true about Enterprise Manager (EM) express in Oracle Database 12c?
A. By default, EM express is available for a database after database creation.
B. You can use EM express to manage multiple databases running on the same server.
C. You can perform basic administrative tasks for pluggable databases by using the EM express interface.
D. You cannot start up or shut down a database Instance by using EM express.
E. You can create and configure pluggable databases by using EM express.
Answer: D
QUESTION 127
Which statement is true about Oracle Net Listener?
A. It acts as the listening endpoint for the Oracle database instance for all local and
non-local user connections.
B. A single listener can service only one database instance and multiple remote client connections.
C. Service registration with the listener is performed by the process monitor (PMON)
process of each database instance.
D. The listener.ora configuration file must be configured with one or more listening
protocol addresses to allow remote users to connect to a database instance.
E. The listener.ora configuration file must be located in the ORACLE_HOME/network/admin directly.
Answer: C
QUESTION 128
The HR user executes the following query on the EMPLOYEES table but does not
issue COMMIT, ROLLBACK, or any data definition language (DDL) command after that:
HR then opens a second session.
Which two operations wait when executed in HR’s second session? (Choose two.)
A. LOCK TABLE employees IN EXCLUSIVE MODE;
B. INSERT INTO employees(empno,ename) VALUES (1289, ‘Dick’);
C. SELECT job FROM employees WHERE job=’CLERK’ FOR UPDATE OF empno;
D. SELECT empno,ename FROM employees WHERE job=’CLERK’;
E. INSERT INTO employees(empno,ename,job) VALUES (2001,’Harry’,’CLERK);
Answer: A C
QUESTION 129
In your production database, data manipulation language (DML) operations are
executed on the SALES table.
You have noticed some dubious values in the SALES table during the last few days.
You are able to track users, actions taken, and the time of the action for this particular period but the changes in data are
not tracked. You decide to keep track of both the old data and new data in the table long with the user information.
What action would you take to achieve this task?
A. Apply fine-grained auditing.
B. Implement value-based auditing.
C. Impose standard database auditing to audit object privileges.
D. Impose standard database auditing to audit SQL statements.
Answer: B
QUESTION 130
Examine the parameters for your database instance:
Which three statements are true about the process of automatic optimization by using
cardinality feedback? (Choose three.)
A. The optimizer automatically changes a plan during subsequent execution of a SQL
statement if there is a huge difference in optimizer estimates and execution statistics.
B. The optimizer can CK optimize a query only once using cardinality feedback.
C. The optimizer enables monitoring for cardinality feedback after the first execution of a query.
D. The optimizer does not monitor cardinality feedback if dynamic sampling and
multicolumn statistics are enabled.
E. After the optimizer identifies a query as a re-optimization candidate, statistics
collected by the collectors are submitted to the optimizer.
Answer: A C D
Explanation
C: During the first execution of a SQL statement, an execution plan is generated as usual.
D: if multi-column statistics are not present for the relevant combination of columns,
the optimizer can fall back on cardinality feedback.
(not B)* Cardinality feedback. This feature, enabled by default in 11.2, is intended to
improve plans for repeated executions.
optimizer_dynamic_sampling
optimizer_features_enable
* dynamic sampling or multi-column statistics allow the optimizer to more accurately
estimate selectivity of conjunctive predicates.
Note:
* OPTIMIZER_DYNAMIC_SAMPLING controls the level of dynamic sampling
performed by the optimizer. Range of
values. 0 to 10
* Cardinality feedback was introduced in Oracle Database 11gR2. The purpose of this
feature is to automatically
improve plans for queries that are executed repeatedly, for which the optimizer does
not estimate cardinalities in the plan properly. The optimizer may misestimate cardinalities for a variety of reasons,
such as missing or inaccurate statistics, or complex predicates. Whatever the reason for the misestimate,
cardinality feedback may be able to help.
QUESTION 131
You are connected to a pluggable database (PDB) as a common user with DBA
privileges. The STATISTICS_LEVEL parameter is PDB_MODIFIABLE.
You execute the following:
SQL > ALTER SYSTEM SET STATISTICS_LEVEL = ALL SID = ‘*’ SCOPE = SPFILE;
Which is true about the result of this command?
A. The STATISTICS_LEVEL parameter is set to all whenever this PDB is re-opened.
B. The STATISTICS_LEVEL parameter is set to ALL whenever any PDB is reopened.
C. The STATISTICS_LEVEL parameter is set to all whenever the multitenant
container database (CDB) is restarted.
D. Nothing happens; because there is no SPFILE for each PDB, the statement is ignored.
Answer: A
QUESTION 132
Oracle Grid Infrastructure for a stand-alone server is installed on your production host
before installing the Oracle Database server. The database and listener are configured by using Oracle Restart.
Examine the following command and its output:
$ crsctl config has
CRS-4622: Oracle High Availability Services auto start is enabled.
What does this imply?
A. When you start an instance on a high with SQL *Plus dependent listeners and
ASM disk groups are automatically started.
B. When a database instance is started by using the SRVCTL utility and listener
startup fails, the instance is still started.
C. When a database is created by using SQL* Plus, it is automatically added to the
Oracle Restart configuration.
D. When you create a database service by modifying the SERVICE_NAMES
initialization parameter, it is automatically added to the Oracle Restart configuration.
Answer: B
Explanation
About Startup Dependencies
Oracle Restart ensures that Oracle components are started in the proper order, in
accordance with component dependencies. For example, if database files are stored in Oracle ASM disk groups,
then before starting the databas instance, Oracle Restart ensures that the Oracle ASM instance is started and the
required disk groups are mounted. Likewise, if a component must be shut down, Oracle Restart ensures that dependent
components are cleanly shut down first.
Oracle Restart also manages the weak dependency between database instances and the
Oracle Net listener (the listener):
When a database instance is started, Oracle Restart attempts to start the listener. If the
listener startup fails, then the database is still started. If the listener later fails, Oracle
Restart does not shut down and restart any database instances.
http://docs.oracle.com/cd/E16655_01/server.121/e17636/restart.htm#ADMIN12710
QUESTION 133
Your multitenant container (CDB) containing three pluggable databases (PDBs) is running in ARCHIVELOG mode.
You find that the SYSAUX tablespace is corrupted in the root container.
The steps to recover the tablespace are as follows:
1. Mount the CDB.
2. Close all the PDBs.
3. Open the database.
4. Apply the archive redo logs.
5. Restore the data file.
6. Take the SYSAUX tablespace offline.
7. Place the SYSAUX tablespace online.
8. Open all the PDBs with RESETLOGS.
9. Open the database with RESETLOGS.
10. Execute the command SHUTDOWN ABORT.
Which option identifies the correct sequence to recover the SYSAUX tablespace?
A. 6, 5, 4, 7
B. 10, 1, 2, 5, 8
C. 10, 1, 2, 5, 4, 9, 8
D. 10, 1, 5, 8, 10
Answer: A
Explanation
RMAN> ALTER TABLESPACE sysaux OFFLINE IMMEDIATE;
RMAN> RESTORE TABLESPACE sysaux;
RMAN> RECOVER TABLESPACE sysaux;
RMAN> ALTER TABLESPACE sysaux ONLINE;
* Example:
While evaluating the 12c beta3 I was not able to do the recover while testing “all pdb
files lost”. Cannot close the pdb as
the system datafile was missing…
So only option to recover was: Shutdown cdb (10)
startup mount; (1)
restore pluggable database recover pluggable database alter database open;
alter pluggable database name open;
Oracle support says: You should be able to close the pdb and restore/recover the
system tablespace of PDB.
* Inconsistent backups are usually created by taking online database backups. You
can also make an inconsistent backup by backing up data files while a database is closed, either:
/ Immediately after the crash of an Oracle instance (or, in an Oracle RAC configuration, all instances)
/ After shutting down the database using SHUTDOWN ABORT Inconsistent backups are only useful
if the database is in ARCHIVELOG mode and all archived redo logs created since the backup are available.
* Open the database with the RESETLOGS option after finishing recovery:
SQL>ALTER DATABASE OPEN RESETLOGS;
QUESTION 134
You created an encrypted tablespace:
You then closed the encryption wallet because you were advised that this is secure.
Later in the day, you attempt to create the EMPLOYEES table in the
SECURESPACE tablespace with the SALT option on the EMPLOYEE column.
Which is true about the result?
A. It creates the table successfully but does not encrypt any inserted data in the
EMPNAME column because the wallet must be opened to encrypt columns with SALT.
B. It generates an error when creating the table because the wallet is closed.
C. It creates the table successfully, and encrypts any inserted data in the EMPNAME
column because the wallet needs to be open only for tablespace creation.
D. It generates error when creating the table, because the salt option cannot be used
with encrypted tablespaces.
Answer: B
QUESTION 135
Which three statements are true when the listener handles connection requests to an
Oracle 12c database instance with multithreaded architecture enabled In UNIX? (Choose three.)
A. Thread creation must be routed through a dispatcher process
B. The local listener may spawn a now process and have that new process create a thread
C. Each Oracle process runs an SCMN thread.
D. Each multithreaded Oracle process has an SCMN thread.
E. The local listener may pass the request to an existing process which in turn will create a thread.
Answer: A D E
QUESTION 136
You use the segment advisor to help determine objects for which space may be
reclaimed. Which three statements are true about the advisor given by the segment advisor? (Choose three.)
A. It may advise the use of online table redefinition for tables in dictionary managed tablespace.
B. It may advise the use of segment shrink for tables in dictionary managed
tablespaces it the no chained rows.
C. It may advise the use of online table redefinition for tables in locally managed tablespaces
D. It will detect and advise about chained rows.
E. It may advise the use of segment shrink for free list managed tables.
Answer: A C D
QUESTION 137
Examine the parameters for a database instance:
Which two statements are true? (Choose two.)
A. Undo records for temporary tables are stored in a temporary tablespace.
B. Undo records for temporary tables are stored in the undo tablespace and logged in the redo.
C. Undo records for temporary tables are stored in the undo tablespace and logged in
the redo only for those sessions where temporary undo is enabled.
D. No redo is generated for the undo records belonging to temporary tables.
E. No redo and undo records are generated for temporary tables.
Answer: A D
QUESTION 138
You execute this command:
Which two statements are true about segment space management for segments in this
tablespace? (Choose two.)
A. Space utilization inside segments is mapped by bitmaps.
B. Segments are automatically shrunk and compressed when rows are deleted.
C. The PCTFREE storage parameter has no effect on segments created in this tablespace.
D. The PCTUSED storage parameter has no effect on segments created in this tablespace.
Answer: A D
QUESTION 139
Which three statements are true about SQL plan directives? (Choose three.)
A. They are tied to a specific statement or SQL ID.
B. They instruct the maintenance job to collect missing statistics or perform dynamic
sampling to generate a more optimal plan.
C. They are used to gather only missing statistics.
D. They are created for a query expression where statistics are missing or the
cardinality estimates by the optimizer are incorrect.
E. They instruct the optimizer to create only column group statistics.
F. Improve plan accuracy by persisting both compilation and execution statistics in
the SYSAUX tablespace.
Answer: B D F
QUESTION 140
You perform RMAN backups for your database and use a recovery catalog for
managing the backups. To free space, you execute this command:
RMAN> DELETE OBSOLETE;
Which three statements are true is this scenario? (Choose three.)
A. The backup sets marked as expired are deleted.
B. The information related to the backups is removed from the recovery catalog and
the control file.
C. The physical files related to the backup need to be manually deleted.
D. The physical files related to the backup are deleted automatically.
E. The backups deleted are based on the backup retention policy.
Answer: B D E
QUESTION 141
You are administering a database stored in Automatic Storage Management (ASM).
You use RMAN to back up the database and the MD_BACKUP command to
back up the ASM metadata regularly. You lost an ASM disk group DG1
due to hardware failure. In which three ways can you re-create the lost disk group and restore the data?
(Choose three.)
A. Use the MD_RESTORE command to restore metadata for an existing disk group
by passing the existing disk group name as an input parameter and use RMAN to restore the data.
B. Use the MKDG command to restore the disk group with the same configuration as
the backed-up disk group and data on the disk group.
C. Use the MD_RESTORE command to restore the disk group with the changed disk
group specification, failure group specification, name, and other attributes and use RMAN to restore the data.
D. Use the MKDG command to restore the disk group with the same configuration as
the backed-up disk group name and same set of disks and failure group configuration,
and use RMAN to restore the data.
E. Use the MD_RESTORE command to restore both the metadata and data for the failed disk group.
F. Use the MKDG command to add a new disk group DG1 with the same or different
specifications for failure group and other attributes and use RMAN to restore the data.
Answer: A C F
Explanation
AC (not E):
The md_restore command allows you to restore a disk group from the metadata
created by the md_backup command.
md_restore can’t restore data, only metadata.
QUESTION 142
A redaction policy was added to the SAL column of the SCOTT.EMP table:
All users have their default set of system privileges.
For which three situations will data not be redacted? (Choose three.)
A. SYS sessions, regardless of the roles that are set in the session
B. SYSTEM sessions, regardless of the roles that are set in the session
C. SCOTT sessions, only if the MGR role is set in the session
D. SCOTT sessions, only if the MGR role is granted to SCOTT
E. SCOTT sessions, because he is the owner of the table
F. SYSTEM session, only if the MGR role is set in the session
Answer: A B D
QUESTION 143
You performed an incremental level 0 backup of a database:
RMAN > BACKUP INCREMENTAL LEVEL 0 DATABASE;
To enable block change tracking after the incremental level 0 backup, you issued this command:
SQL > ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ‘ /mydir/rman_change_track.f’;
To perform an incremental level 1 cumulative backup, you issued this command:
RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;
Which three statements are true? (Choose three.)
A. Backup change tracking will sometimes reduce I/O performed during cumulative
incremental backups.
B. The change tracking file must always be backed up when you perform a full
database backup.
C. Block change tracking will always reduce I/O performed during cumulative
incremental backups.
D. More than one database block may be read by an incremental backup for a change
made to a single block.
E. The incremental level 1 backup that immediately follows the enabling of block
change tracking will not read the change tracking file to discover changed blocks.
Answer: A D E
QUESTION 144
Your multitenant container (CDB) contains two pluggable databases (PDB), HR_PDB
and ACCOUNTS_PDB, both of which use the CDB tablespace. The temp file is called temp01.tmp.
A user issues a query on a table on one of the PDBs and receives the following error:
ERROR at line 1:
ORA-01565: error in identifying file ‘/u01/app/oracle/oradata/CDB1/temp01.tmp’
ORA-27037: unable to obtain file status
Identify two ways to rectify the error.
A. Add a new temp file to the temporary tablespace and drop the temp file that that
produced the error.
B. Shut down the database instance, restore the temp01.tmp file from the backup, and
then restart the database.
C. Take the temporary tablespace offline, recover the missing temp file by applying
redo logs, and then bring the temporary tablespace online.
D. Shutdown the database instance, restore and recover the temp file from the backup,
and then open the database with RESETLOGS.
E. Shut down the database instance and then restart the CDB and PDBs.
Answer: A E
Explanation
* Because temp files cannot be backed up and because no redo is ever generated for
them, RMAN never restores or recovers temp files. RMAN does track the names of temp files,
but only so that it can automatically re-create them when needed.
* If you use RMAN in a Data Guard environment, then RMAN transparently converts
primary control files to standby control files and vice versa. RMAN automatically updates file names for data files,
online redo logs, standby redo logs, and temp files when you issue RESTORE and RECOVER.
QUESTION 145
You want to flash back a test database by five hours.
You issue this command:
SQL > FLASHBACK DATABASE TO TIMESTAMP (SYSDATE - 5/24);
Which two statements are true about this flashback scenario? (Choose two.)
A. The database must have multiplexed redo logs for the flashback to succeed.
B. The database must be MOUNTED for the flashback to succeed.
C. The database must use block change tracking for the flashback to succeed.
D. The database must be opened in restricted mode for the flashback to succeed.
E. The database must be opened with the RESETLOGS option after the flashback is complete.
F. The database must be opened in read-only mode to check if the database has been flashed back to the correct SCN.
Answer: B E
QUESTION 146
You want to prevent a group of users in your database from performing long-running
transactions that consume huge amounts of space in the undo tablespace.
If the quota for these users is exceeded during execution of a data manipulation
language (DML) statement, the operation should abort and return an error. However,
queries should still be allowed, even if users have exceeded the undo space limitation.
How would you achieve this?
A. Specify the maximum amount of quota a user can be allocated in the undo tablespace.
B. Decrease the number of Interested Transaction List (ITL) slots for the segments on
which these users perform transactions.
C. Implement a profile for these users.
D. Implement a Database Resource Manager plan.
Answer: D
QUESTION 147
Your multitenant container database, CDB1, is running in ARCHIVELOG mode and
has two pluggable databases, HR_PDB and ACCOUNTS_PDB. An RMAN backup exists for the database.
You issue the command to open ACCOUNTS_PDB and find that the USERDATA.DBF data file for the default
permanent tablespace USERDATA belonging to ACCOUNTS_PDB is corrupted.
What should you do before executing the commands to restore and recover the data
file in ACCOUNTS_PDB?
A. Place CDB1 in the mount stage and then the USERDATA tablespace offline in ACCOUNTS_PDB.
B. Place CDB1 in the mount stage and issue the ALTER PLUGGABLE DATABASE accounts_pdb CLOSE
IMMEDIATE command.
C. Issue the ALTER PLUGGABLE DATABASE accounts_pdb RESTRICTED command.
D. Take the USERDATA tablespace offline in ACCOUNTS_PDB.
Answer: D
Explanation
* You can take an online tablespace offline so that it is temporarily unavailable for
general use. The rest of the database remains open and available for users to access data.
Conversely, you can bring an offline tablespace online to make the
schema objects within the tablespace available to database users.
The database must be open to alter the availability of a tablespace.
QUESTION 148
What should you do to ensure that a job stores minimal job metadata and runtime data
on disk, and uses only existing PL/SQL programs?
A. Create an event-based job.
B. Create a lightweight job.
C. Specify the job as a member of a job class.
D. Use a job array.
Answer: B
QUESTION 149
In your Database, the TBS PERCENT USED parameter is set to 60 and the TBS
PERCENT FREE parameter is set to 20.
Which two storage-tiering actions might be automated when using information
Lifecycle Management (ILM) to automate data movement? (Choose two.)
A. The movement of all segments to a target tablespace with a higher degree of
compression, on a different storage tier, when the source tablespace exceeds TBS PERCENT USED
B. Setting the target tablespace to read-only
C. The movement of some segments to a target tablespace with a higher degree of
compression, on a different storage tier, when the source tablespace exceeds TBS PERCENT USED
D. Setting the target tablespace offline
E. The movement of some blocks to a target tablespace with a lower degree of compression,
on a different storage tier, when the source tablespace exceeds TBS PERCENT USED
Answer: B C
Explanation
The value for TBS_PERCENT_USED specifies the percentage of the tablespace
quota when a tablespace is considered full.
The value for TBS_PERCENT_FREE specifies the targeted free percentage for the tablespace.
When the percentage of the tablespace quota reaches the value of TBS_PERCENT_USED,
ADO begins to move data so that percent free of the tablespace quota approaches the value of
TBS_PERCENT_FREE. This action by ADO is a best effort and not a guarantee.
QUESTION 150
Which two statements are true about Oracle Data Pump export and import operations?
(Choose two.)
A. You can detach from a data pump export job and reattach later.
B. Data pump uses parallel execution server processes to implement parallel import.
C. Data pump import requires the import file to be in a directory owned by the oracle owner.
D. The master table is the last object to be exported by the data pump.
E. You can detach from a data pump import job and reattach later.
Answer: A B
Explanation
B: Data Pump can employ multiple worker processes, running in parallel, to increase
job performance.
D: For export jobs, the master table records the location of database objects within a
dump file set. / Export builds and maintains the master table for the duration of the job.
At the end of an export job, the content of the master table is written to a file in the dump file set.
/ For import jobs, the master table is loaded from the dump file set and is used to
control the sequence of operations for locating objects that need to be imported into the target database.
QUESTION 151
In your database, you want to ensure that idle sessions that are blocking active are
automatically terminated after a specified period of time.
How would you accomplish this?
A. Setting a metric threshold
B. Implementing Database Resource Manager
C. Enabling resumable timeout for user sessions
D. Decreasing the value of the IDLE_TIME resource limit in the default profile
Answer: B
QUESTION 152
Which two statements are true about the Automatic Database Diagnostic Monitor(ADDM)?
(Choose two.)
A. The ADDM requires at least four AWR snapshots for analysis
B. The ADDM runs after each AWR snapshot is collected automatically by MMON
C. The results of the ADDM analysis are stored in the Automatic Workload Repository (AWR)
D. The ADDM analysis provides only diagnostics information but
does not provide recommendations
E. The ADDM calls other advisors if required, but does not provide recommendations about the advisors
Answer: B C
QUESTION 153
A warehouse fact table in your Oracle 12c Database is range-partitioned by month
and accessed frequently with queries that span multiple partitions
The table has a local prefixed, range partitioned index.
Some of these queries access very few rows in some partitions and all the rows in
other partitions, but these queries still perform a full scan for all accessed partitions.
This commonly occurs when the range of dates begins at the end of a month or ends
close to the start of a month. You want an execution plan to be generated that uses indexed
access when only a few rows are accessed from a segment,
while still allowing full scans for segments where many rows are returned.
Which three methods could transparently help to achieve this result? (Choose three.)
A. Using a partial local Index on the warehouse fact table month column with
indexing disabled to the table partitions that return most of their rows to the queries.
B. Using a partial local Index on the warehouse fact table month column with
indexing disabled for the table partitions that return a few rows to the queries.
C. Using a partitioned view that does a UNION ALL query on the partitions of the
warehouse fact table, which retains the existing local partitioned column.
D. Converting the partitioned table to a partitioned view that does a UNION ALL
query on the monthly tables, which retains the existing local partitioned column.
E. Using a partial global index on the warehouse fact table month column with
indexing disabling for the table partitions that return most of their rows to the queries.
F. Using a partial global index on the warehouse fact table month column with
indexing disabled for the table partitions that return a few rows to the queries.
Answer: A C E
Explanation
Note:
* Oracle 12c now provides the ability to index a subset of partitions and to exclude
the others.
Local and global indexes can now be created on a subset of the partitions of a table.
Partial Global indexes provide more flexibility in index creation for partitioned tables.
For example, index segments can be omitted for the most recent partitions to ensure
maximum data ingest rates without impacting the overall data model and access for
the partitioned object.
Partial Global Indexes save space and improve performance during loads and queries.
This feature supports global indexes that include or index a certain subset of table
partitions or subpartitions, and exclude the others. This operation is
supported using a default table indexing property. When a table is created or altered, a
default indexing property can be specified for the table or its partitions.
QUESTION 154
Examine the query and its output executed In an RDBMS Instance:
Which three statements are true about the users (other than sys) in the output?
(Choose three.)
A. The C # # B_ADMIN user can perform all backup and recovery operations using RMAN only.
B. The C # # C_ADMIN user can perform the data guard operation with Data Guard Broker.
C. The C # # A_ADMIN user can perform wallet operations.
D. The C # # D_ADMIN user can perform backup and recovery operations for
Automatic Storage Management (ASM).
E. The C # # B_ADMIN user can perform all backup and recovery operations using RMAN or SQL* Plus.
Answer: B D E
Explanation
B: SYSDG administrative privilege has ability to perform Data Guard operations
(including startup and shutdown) using Data Guard Broker or dgmgrl.
D: SYSASM The new (introduced in 11g) SYSASM role to manage the ASM instance, variable
extent sizes to reduce shared pool usage, and the ability of an instance to read from a specific disk of a diskgroup
E (Not A): SYSDBA is like a role in the sense that it is granted, but SYSDBA is a
special built-in privilege to allow the DBA full control over the database
Incorrect:
Not C: SYSKM. SYSKM administrative privilege has ability to perform transparent data encryption wallet operations.
Note:
Use the V$PWFILE_USERS view to see the users who have been granted administrative privileges.
QUESTION 155
In your database, USERS is the default permanent tablespace.
Examine the commands and their outcome:
You plan to execute the commands:
Which two statements are true? (Choose two.)
A. The MYTAB table is created in the SYSTEM tablespace but no rows can be
inserted into the table by USER02.
B. The MYTAB table is created in the SYSTEM tablespace and rows can be inserted
into the table by USER02.
C. The MYTAB table is created in the USERS tablespace but no rows can be inserted
into the table by USER02.
D. The CREATE TABLE statement generates an error because the SYSDBA
privilege does not provide any space quota on the SYSTEM tablespace by default.
E. The MYTAB table is owned by the SYS user.
Answer: B E
QUESTION 156
The DEFERRED_SEGMENT_CREATION parameter is set to TRUE in your
database instance. You execute the following command to create a table:
Which two statements are true? (Choose two.)
A. The table is created without a segment because the storage clause is missing.
B. A segment is allocated when the first row is inserted in the table.
C. A segment is allocated when an index is created for any column in the table.
D. The table is created and extents are immediately allocated as per the default
storage defined for its tablespace.
E. A segment is allocated for the table if the ALTER TABLE… ALLOCATE
EXTENT command is issued.
Answer: B E
QUESTION 157
Examine the parameters for a database instance:
What is the effect on new transactions when all undo space in the default undo
tablespace is in use by active transactions?
A. Transactions write their undo in the SYSTEM undo segment.
B. Transactions fail.
C. Transactions wait until space becomes available in UNDOTBS1.
D. Transactions write their undo in a temporary tablespace.
Answer: B
QUESTION 158
Your multitenant container database (CDB) contains pluggable databases (PDBs), you
are connected to the HR_PDB.
You execute the following command:
SQL > CREATE UNDO TABLESPACE undotb01
DATAFILE ‘u01/oracle/rddb1/undotbs01.dbf’ SIZE 60M AUTOEXTEND ON;
What is the result?
A. It executes successfully and creates an UNDO tablespace in HR_PDB.
B. It falls and reports an error because there can be only one undo tablespace in a CDB.
C. It fails and reports an error because the CONTAINER=ALL clause is not specified
in the command.
D. It fails and reports an error because the CONTAINER=CURRENT clause is not
specified in the command.
E. It executes successfully but neither tablespace nor the data file is created.
Answer: E
Explanation
Interesting behavior in 12.1.0.1 DB of creating an undo tablespace in a PDB. With the
new Multitenant architecture the undo tablespace resides at the CDB level and PDBs
all share the same UNDO tablespace.
When the current container is a PDB, an attempt to create an undo tablespace fails
without returning an error.
QUESTION 159
Which three statements are true about the working of system privileges in a
multitenant control database (CDB) that has
pluggable databases (PDBs)? (Choose three.)
A. System privileges apply only to the PDB in which they are used.
B. Local users cannot use local system privileges on the schema of a common user.
C. The granter of system privileges must possess the set container privilege.
D. Common users connected to a PDB can exercise privileges across other PDBs.
E. System privileges with the with grant option container all clause must be granted to
a common user before the common user can grant privileges to other users.
Answer: A C E
Explanation
A, Not D: In a CDB, PUBLIC is a common role. In a PDB, privileges granted locally
to PUBLIC enable alllocal and common users to exercise these privileges in this PDB only.
C: A user can only perform common operations on a common role, for example,
granting privileges commonly to the role, when the following criteria are met:
The user is a common user whose current container is root.
The user has the SET CONTAINER privilege granted commonly, which means that
the privilege applies in all containers.
The user has privilege controlling the ability to perform the specified operation, and
this privilege has been granted commonly
Incorrect:
Note:
* Every privilege and role granted to Oracle-supplied users and roles is granted
commonly except for system privileges
granted to PUBLIC, which are granted locally.
QUESTION 160
You have altered a non-unique index to be invisible to determine if queries execute
within an acceptable response time without using this index.
Which two are possible if table updates are performed which affect the invisible index
columns? (Choose two.)
A. The index remains invisible.
B. The index is not updated by the DML statements on the indexed table.
C. The index automatically becomes visible in order to have it updated by DML on the table.
D. The index becomes unusable but the table is updated by the DML.
E. The index is updated by the DML on the table.
Answer: A E
Explanation
Unlike unusable indexes, an invisible index is maintained during DML statements.
Note:
* Oracle 11g allows indexes to be marked as invisible. Invisible indexes are
maintained like any other index, but they are ignored by the optimizer
unless the OPTIMIZER_USE_INVISIBLE_INDEXES parameter is set to TRUE at the
instance or session level. Indexes can be created as invisible by using the INVISIBLE
keyword, and their visibility can be toggled using the ALTER INDEX command.
QUESTION 161
Which two actions does an incremental checkpoint perform? (Choose two.)
A. It signals CKPT to write the checkpoint position to the data file headers.
B. It writes the checkpoint position to the data file headers.
C. It advances the checkpoint position in the checkpoint queue.
D. It writes the checkpoint position to the control file.
Answer: C D
QUESTION 162
In your Oracle 12c database, you plan to execute the command: SQL> CREATE
TABLESPACE tbs1 DATAFILE ‘/u02/oracle/data/tbs01.dbf’ SIZE 50M;
The u02 file system has 1 GB of free space available.
What is the outcome?
A. It creates a locally managed tablespace with manual segment space management enabled.
B. It raises an error because extent management is not specified.
C. It creates a locally managed tablespace with automatic segment space management enabled.
D. It creates a dictionary-managed tablespace with manual segment space management enabled.
Answer: C
QUESTION 163
You executed the following command to create a password file in the database server:
$ orapwd file = orapworcl entries = 5 ignorecase=N
Which statement describes the purpose of the above password file?
A. It records usernames and passwords of users when granted the DBA role
B. It contains usernames and passwords of users for whom auditing is enabled
C. It is used by Oracle to authenticate users for remote database administrator
D. It records usernames and passwords of all users when they are added to OSDBA or
OSOPER operating groups
Answer: C
QUESTION 164
Which three statements are true about the purpose of checkpoints? (Choose three.)
A. They ensure that uncommitted transactions are rolled back in case of an instance failure.
B. They ensure that all the dirty buffers are written to disk during a normal shutdown.
C. They ensure that instance recovery starts in the event of an instance failure.
D. They ensure that dirty buffers in the buffer cache are written to disk regularly.
E. They reduce the time required for recovery in case of an instance failure.
Answer: B D E
QUESTION 165
Your database is configured in ARCHIVELOG mode.
Examine the RMAN configuration parameters:
Examine the command:
RMAN> BACKUP DATABASE PLUS ARCHIVELOG DELETE INPUT;
What is the outcome?
A. It fails because the DELETE INPUT option can be used only with the BACKUP
AS BACKUPSET command.
B. It executes successfully and creates a backup set of the database along with
archived log files and then deletes the original archived log files.
C. It executes successfully and creates an image copy of the database along with
archive log files and then deletes the original archived log files.
D. It fails because the DELETE INPUT option can be used only with the BACKUP AS COPY command.
Answer: B
QUESTION 166
You have just completed a manual upgrade of an Oracle 11g Database to Oracle
Database 12c. The Post-Upgrade Status Tool reports an INVALID status for some of the
components after the upgrade. What must you
do first in this situation to attempt to fix this problem?
A. Run catuppst.sql to perform revalidation actions
B. Run utluiobj.sql to filter out objects that were invalidated by the upgrade process.
C. Run preupgrd.sql and then execute the generated “fix-up” scripts to resolve status issues.
D. Run utlrp.sql to recompile stored PL/SQL and Java code and check the DBA_REGISTRY view.
Answer: D
QUESTION 167
Identify three benefits of Unified Auditing.
A. Decreased use of storage to store audit trail rows in the database.
B. It improves overall auditing performance.
C. It guarantees zero-loss auditing.
D. The audit trail cannot be easily modified because it is read-only.
E. It automatically audits Recovery Manager (RMAN) events.
Answer: A B E
Explanation
A: Starting with 12c, Oracle has unified all of the auditing types into one single unit
called Unified auditing. You don’t have to turn on or off all of the different auidting types individually and
as a matter of fact auditing is enabled by default right out of the box.
The AUD$ and FGA$ tables have been replaced with one single
audit trail table. All of the audit data is now stored in Secure Files table thus improving the overall management
aspects of audit data itself.
B: Further the audit data can also be buffered solving most of the common
performance related problems seen on busy environments.
E: Unified Auditing is able to collect audit data for Fine Grained Audit, RMAN, Data
Pump, Label Security, Database Vault and Real Application Security operations.
Note:
* Benefits of the Unified Audit Trail The benefits of a unified audit trail are many:
/ (B) Overall auditing performance is greatly improved. The default mode that unified
audit works is Queued Write mode.
In this mode, the audit records are batched in SGA queue and is persisted in a periodic
way. Because the audit records are written to SGA queue, there is a significant performance improvement.
/ The unified auditing functionality is always enabled and does not depend on the
initialization parameters that were used in previous releases
/ (A) The audit records, including records from the SYS audit trail, for all the audited
components of your Oracle Database installation are placed in one location and in one format, rather than your
having to look in different places to find audit trails in varying formats. This consolidated view enables auditors to
co-relate audit information from different components. For example, if an error occurred during an INSERT statement,
standard auditing can indicate the error number and the SQL that was executed. Oracle Database Vault-specific information
can indicate whether this error happened because of a command rule violation or realm violation. Note that there will
be two audit records with a distinct AUDIT_TYPE. With this unification in place, SYS audit records appear with
AUDIT_TYPE set to Standard Audit.
/ The management and security of the audit trail is also improved by having it in single audit trail.
/ You can create named audit policies that enable you to audit the supported
components listed at the beginning of this section, as well as SYS administrative users.
Furthermore, you can build conditions and exclusions into your policies.
* Oracle Database 12c Unified Auditing enables selective and effective auditing
inside the Oracle database using policies and conditions.
The new policy based syntax simplifies management of auditing within the database and provides the
ability to accelerate auditing based on conditions.
* The new architecture unifies the existing audit trails into a single audit trail,
enabling simplified management and increasing the security of audit data generated by the database.
QUESTION 168
You enabled an audit policy by issuing the following statements:
SQL> AUDIT POLICY ORA_DATABASE_PARAMETER BY SCOTT;
SQL> AUDIT POLICY ORA_DATABASE_PARAMETER BY SYS, SYSTEM;
For which database users and for which executions is the audit policy now active?
Select two.
A. SYS, SYSTEM
B. SCOTT
C. Only for successful executions
D. Only for failed executions
E. Both successful and failed executions
Answer: A E
Explanation
* The ORA_DATABASE_PARAMETER policy audits commonly used Oracle
Database parameter settings. By default, this policy is not enabled.
QUESTION 169
Which two statements are true about the (PMON) background process in Oracle
Database 12c? (Choose two.)
A. It records checkpoint information in the control file.
B. It frees unused temporary segments.
C. It kills sessions that exceed idle time.
D. It registers database services with all local and remote listeners known to the database instance.
E. It frees resources held by abnormally terminated processes.
Answer: D E
QUESTION 170
Which two statements are true about the use of the procedures listed in the
v$sysaux_occupants.move_procedure column?
(Choose two.)
A. The procedure may be used for some components to relocate component data to
the SYSAUX tablespace from its current tablespace.
B. The procedure may be used for some components to relocate component data from
the SYSAUX tablespace to another tablespace.
C. All the components may be moved into SYSAUX tablespace.
D. All the components may be moved from the SYSAUX tablespace.
Answer: A B
QUESTION 171
You want to create a role that:
- is protected from unauthorized usage
- does not use a password embedded in the application source code or stored in a table
- is enabled for a user based on security policies defined in a PL/SQL package
How would you create this role?
A. as a secure application role
B. with definer’s rights
C. with global authentication
D. with external authentication
Answer: A
QUESTION 172
The user SCOTT owns the CUST table that is placed in the SALES tablespace. The
user SCOTT opens a session and executes commands as follows:
SQL> INSERT INTO cust VALUES(101, 'JACK'); 1 row created.
SQL> INSERT INTO cust VALUES(102, 'SMITH'); 1 row created.
As a DBA, you execute the following command from another session: ALTER
TABLESPACE sales READ ONLY;
Which statement is true regarding the effect of this command on the transaction in
Scott's session?
A. The command fails as a transaction is still pending.
B. The transaction in Scott's session is rolled back and the tablespace becomes readonly.
C. The command waits and the user SCOTT can execute data manipulation language
(DML) statements only as part of the current transaction.
D. The command hangs until all transactions on the objects in the tablespace commit
or rollback, and then the tablespace is placed in readonly mode.
Answer: B
QUESTION 173
Which two statements are true about standard database auditing? (Choose two.)
A. DDL statements can be audited.
B. Statements that refer to standalone procedure can be audited.
C. Operations by the users logged on as SYSDBA cannot be audited.
D. Only one audit record is ever created for a session per audited statement even
though it is executed more than once.
Answer: A B
QUESTION 174
Which three are direct benefits of the multiprocess, multithreaded architecture of
Oracle Database 12c when it is enabled?
(Choose three.)
A. Reduced logical I/O
B. Reduced virtual memory utilization
C. Improved parallel Execution performance
D. Improved Serial Execution performance
E. Reduced physical I/O
F. Reduced CPU utilization
Answer: B C F
Explanation
* Multiprocess and Multithreaded Oracle Database Systems
Multiprocess Oracle Database (also called multiuser Oracle Database) uses several
processes to run different parts of the Oracle Database code and additional Oracle processes for the users—either one
process for each connected user or one or more processes shared by multiple users. Most databases are multiuser because a
primary advantage of a database is managing data needed by multiple users simultaneously.
Each process in a database instance performs a specific job. By dividing the work of
the database and applications into several processes, multiple users and applications can connect to an instance
simultaneously while the system gives good performance.
* In previous releases, Oracle processes did not run as threads on UNIX and Linux
systems. Starting in Oracle Database 12c, the multithreaded Oracle Database model enables Oracle processes to execute as
operating system threads in separate address spaces.
QUESTION 175
In order to exploit some new storage tiers that have been provisioned by a storage
administrator, the partitions of a large heap table must be moved to other tablespaces in your Oracle 12c database?
Both local and global partitioned B-tree Indexes are defined on the table.
A high volume of transactions access the table during the day and a medium volume
of transactions access it at night and during weekends. Minimal disrupt ion to availability is required.
Which three statements are true about this requirement? (Choose three.)
A. The partitions can be moved online to new tablespaces. B. Global indexes must be
rebuilt manually after moving the partitions.
C. The partitions can be compressed in the same tablespaces.
D. The partitions can be compressed in the new tablespaces.
E. Local indexes must be rebuilt manually after moving the partitions.
Answer: A C D
Explanation
A: You can create and rebuild indexes online. Therefore, you can update base tables
at the same time you are building or rebuilding indexes on that table.
You can perform DML operations while the index build is taking place, but DDL
operations are not allowed. Parallel execution is not supported when creating or
rebuilding an index online.
D: Moving (Rebuilding) Index-Organized Tables Because index-organized tables are primarily stored in a B-tree index,
you can encounter fragmentation as a consequence of incremental updates. However,
you can use the ALTER TABLE...MOVE statement to rebuild the index and reduce this fragmentation.
C: If a table can be compressed in the new tablespace, also it can be compressed in the same tablespace.
Incorrect:
Not B, not E: Local and Global indexes can be automatically rebuild with UPDATE INDEXES when you move the table.
QUESTION 176
You use multiple temporary tables frequently in your database.
Which two are benefits of configuring temporary undo?
(Choose two.)
A. Performance improves because less redo is written to the redo log.
B. Temporary undo reduces the amount of undo stored in undo tablespaces.
C. Performance improves because data manipulation language (DML) operations
performed on temporary tables do not use the buffer cache.
D. Performance improves because no redo and undo are generated for the temporary tables.
Answer: A B
QUESTION 177
Which three statements are true about Flashback Database? (Choose three.)
A. Flashback logs are written sequentially, and are archived.
B. Flashback Database uses a restored control file to recover a database.
C. The Oracle database automatically creates, deletes, and resides flashback logs in
the Fast Recovery Area.
D. Flashback Database can recover a database to the state that it was in before a reset
logs operation.
E. Flashback Database can recover a data file that was dropped during the span of
time of the flashback.
F. Flashback logs are used to restore to the blocks' before images, and then the redo
data may be used to roll forward to the desired flashback time.
Answer: C D F
QUESTION 178
Which two are prerequisites for performing a flashback transaction? (Choose two.)
A. Flashback Database must be enabled.
B. Undo retention guarantee for the database must be configured. C. EXECUTE
privilege on the DBMS_FLASHBACK package must be granted to the user flashing
back transaction.
D. Supplemental logging must be enabled.
E. Recycle bin must be enabled for the database.
F. Block change tracking must be enabled tor the database.
Answer: B D
QUESTION 179
The persistent configuration settings for RMAN have default for all parameters.
Identify four RMAN commands that produce a multi-section backup.
A. BACKUP TABLESPACE SYSTEM SECTION SIZE 100M;
B. BACKUP AS COPY TABLESPACE SYSTEM SECTION SIZE 100M;
C. BACKUP ARCHIVELOG ALL SECTION SIZE 25M;
D. BACKUP TABLESPACE "TEMP" SECTION SIZE 10M;
E. BACKUP TABLESPACE "UNDO" INCLUDE CURRENT CONTROLFILE SECTION SIZE 100M;
F. BACKUP SPFILE SECTION SIZE 1M;
G. BACKUP INCREMENTAL LEVEL 0 TABLESPACE SYSAUX SECTION SIZE 100M;
Answer: A B E G
QUESTION 180
You have the following entry in the tnsnames.ors of your hq.us.example.com host machine:
You issue the following command at the command prompt:
Sqlplus HR/HR@ORCL
Which statement is true about the connection to the ORCL database instance?
A. The connection succeeds, provided the NAMES.DEFAULT_DOMAIN parameter
is set to us.example.com in the sqlnet.ora file on the client side.
B. The connection fails because the net service name does not have the suffix
us.example.com.
C. The connection succeeds, provided the SERVICE_NAMES initialization
parameter is set to ORCL.
D. The connection succeeds, provided the ORCL.us.example.com database service is
registered with a listener, the listener is up, and the database is open.
Answer: D
QUESTION 181
Which three statements are true about automated maintenance tasks? (Choose three.)
A. They run at predefined time intervals that are intended to occur during a period of
low system load.
B. An Oracle Scheduler job is created for each maintenance task that is scheduled to
run in a maintenance window.
C. A maintenance window is automatically extended until all the maintenance tasks
defined are completed.
D. D. A repository is maintained in the SYSTEM tablespace to store the history of
execution of all tasks.
E. Predefined maintenance tasks consist of automatic optimizer statistics collection,
running Automatic Segment Advisor,
and running Automatic SQL Tuning Advisor.
Answer: A B E
QUESTION 182
Your database has the SRV1 service configured for an application that runs on
middle-tier application server. The application has multiple modules.
You enable tracing at the service level by executing the following command:
SQL > exec DBMS_MONITOR.SERV_MOD_ACT_TRACE_ENABLE (‘SRV1’);
The possible outcome and actions to aggregate the trace files are as follows:
1. The command fails because a module name is not specified.
2. A trace file is created for each session that is running the SRV1 service.
3. An aggregated trace file is created for all the sessions that are running the SRV1 service.
4. The trace files may be aggregated by using the trcess utility.
5. The trace files be aggregated by using the tkprof utility.
Identify the correct outcome and the step to aggregate by using tkprof utility?
A. 1
B. 2 and 4
C. 2 and 5
D. 3 and 4
E. 3 and 5
Answer: B
Explanation
Tracing information is present in multiple trace files and you must use the trcsess tool
to collect it into a single file.
Incorrect:
Not 1: Parameter service_name Name of the service for which tracing is enabled.
module_name Name of the MODULE. An optional additional qualifier for the service. Note:
* The procedure enables a trace for a given combination of Service, MODULE and
ACTION name. The specification is strictly hierarchical: Service Name or Service Name/MODULE,
or Service Name, MODULE, and ACTION name must be specified.
Omitting a qualifier behaves like a wild-card, so that not specifying an
ACTION means all ACTIONs. Using the ALL_ACTIONS constant achieves the same purpose.
* SERV_MOD_ACT_TRACE_ENABLE Procedure This procedure will enable SQL
tracing for a given combination of Service Name, MODULE and ACTION globally
unless an instance_name is specified.
* DBMS_MONITOR.SERV_MOD_ACT_TRACE_ENABLE( service_name IN
VARCHAR2, module_name IN VARCHAR2 DEFAULT ANY_MODULE, action_name IN
VARCHAR2 DEFAULT ANY_ACTION, waits IN BOOLEAN DEFAULT TRUE,
binds IN BOOLEAN DEFAULT FALSE, instance_name IN VARCHAR2 DEFAULT NULL);
QUESTION 183
Examine the following command;
ALTER SYSTEM SET enable_ddl_logging = TRUE;
Which statement is true?
A. Only the data definition language (DDL) commands that resulted in errors are
logged in the alert log file.
B. All DDL commands are logged in the alert log file.
C. All DDL commands are logged in a different log file that contains DDL statements
and their execution dates.
D. Only DDL commands that resulted in the creation of new segments are logged.
E. All DDL commands are logged in XML format in the alert directory under the
Automatic Diagnostic Repository (ADR) home.
Answer: E
QUESTION 184
You want to reduce fragmentation and reclaim unused space for the SALES table but
not its dependent objects. During this operation, you want to ensure the following:
i. Long-running queries are not affected.
ii. No extra space is used.
iii. Data manipulation language (DML) operations on the table succeed at all times
throughout the process.
iv. Unused space is reclaimed both above and below the high water mark.
Which ALTER TABLE option would you recommend?
A. DEALLOCATE UNUSED
B. SHRINK SPACE CASCADE
C. SHRINK SPACE COMPACT
D. ROW STORE COMPRESS BASIC
Answer: C
QUESTION 185
Which three statements are true about Oracle Data Pump? (Choose three.)
A. IMPDP can be used to change target data file names, schemas, and tablespaces
during import.
B. The DBMS_DATAPUMP PL/SQL package can be used independently of Data
Pump clients to perform export and import operations.
C. EXPDP and IMPDP are the client components of Oracle Data Pump.
D. Oracle Data Pump export and import operations can be performed only by users
with the SYSDBA privilege. E. IMPDP always use the conventional path insert
method to import data.
Answer: A B C
QUESTION 186
In which two scenarios do you use SQL* Loader to load data? (Choose two.)
A. Transform the data while it is being loaded into the database.
B. Use transparent parallel processing without having to split the external data first.
C. Load data into multiple tables during the same load statement.
D. Generate unique sequential key values in specified columns.
Answer: C D
QUESTION 187
Your database instance is started by using a server parameter file (SPFILE). You
execute the following command to change the value of the LOG_BUFFER initialization parameter:
ALTER SYSTEM SET LOG_BUFFER=32 M;
What is the outcome of this command?
A. The parameter value is changed and it comes into effect as soon as space becomes
available in the SGA.
B. It returns an error because the value of this parameter cannot be changed dynamically.
C. The parameter value is changed and it comes into effect at the next instance startup.
D. It returns an error because SCOPE should be set to MEMORY.
Answer: B
QUESTION 188
Examine the details of the Top 5 Timed Events in the following Automatic
Workloads Repository (AWR) report:
What are three possible causes for the latch-related wait events?
A. The size of the shared pool is too small.
B. Cursors are not being shared.
C. A large number COMMITS are being performed.
D. There are frequent logons and logoffs.
E. The buffers are being read into the buffer cache, but some other session is changing the buffers.
Answer: A B D
QUESTION 189
A database is stored in an Automatic Storage Management (ASM) disk group, disk
group, DGROUP1 with SQL:
There is enough free space in the disk group for mirroring to be done.
What happens if the CONTROLLER1 failure group becomes unavailable due to error
of for maintenance?
A. Transactions and queries accessing database objects contained in any tablespace
stored in DGROUP1 will fall.
B. Mirroring of allocation units will be done to ASM disks in the CONTROLLER2
failure group until the CONTROLLER1 for failure group is brought back online.
C. The data in the CONTROLLER1 failure group is copied to the controller2 failure
group and rebalancing is initiated.
D. ASM does not mirror any data until the controller failure group is brought back
online, and newly allocated primary allocation units (AU) are stored in the controller2
failure group, without mirroring.
E. Transactions accessing database objects contained in any tablespace stored in
DGROUP1 will fail but queries will succeed.
Answer: D
QUESTION 190
You are about to plug a multi-terabyte non-CDB into an existing multitenant
container database (CDB) as a pluggable database (PDB).
The characteristics of the non-CDB are as follows:
– Version: Oracle Database 12c Releases 1 64-bit
– Character set: WE8ISO8859P15
– National character set: AL16UTF16
– O/S: Oracle Linux6 64-bit
The characteristics of the CDB are as follows:
– Version: Oracle Database 12c Release 1 64-bit
– Character set: AL32UTF8
– O/S: Oracle Linux 6 64-bit
Which technique should you use to minimize down time while plugging this
non-CDB into the CDB?
A. Transportable database B. Transportable tablespace
C. Data Pump full export / import
D. The DBMS_PDB package
E. RMAN
Answer: C
QUESTION 191
What can be automatically implemented after the SQL Tuning Advisor is run as part
of the Automated Maintenance Task?
A. statistics recommendations
B. SQL profile recommendations
C. SQL statement restructure recommendations
D. creation of materialized views to improve query performance
Answer: B
QUESTION 192
On your Oracle 12c database, you Issue the following commands to create indexes
SQL > CREATE INDEX oe.ord_customer_ix1 ON oe.orders (customers_id,
sales_rep_id) INVISIBLE; SQL> CREATE
BITMAP INDEX oe.ord_customer_ix2 ON oe.orders (customers_id, sales_rep_id);
Which two statements are correct?
(Choose two.)
A. Both the indexes are created; however, only the ORD_COSTOMER index is
visible.
B. The optimizer evaluates index access from both the Indexes before deciding on
which index to use for query execution plan.
C. Only the ORD_CUSTOMER_IX1 index is created.
D. Only the ORD_CUSTOMER_IX2 index is created.
E. Both the indexes are updated when a new row is inserted, updated, or deleted In the
orders table.
Answer: A E
Explanation
11G has a new feature called Invisible Indexes. An invisible index is invisible to the
optimizer as default. Using this feature, we can test a new index without effecting
the execution plans of the existing sql statements or we can test the effect of
dropping an index without dropping it.
QUESTION 193
A database instance is started by using an SPFILE. The database is configured in
ARCHIVELOG mode and the control file autobackup is configured. Daily full
database backups are performed by using RMAN.
You lost all control files due to media failure.
Given the steps to recover from the error in random order:
1. Shut down the instance, if it is not already down.
2. Restore the control file from autobackup to a new location.
3. Start the database instance to NOMOUNT state.
4. Recover the database to the point of failure of the control file.
5. Open the database with the RESETLOGS option.
6. Mount the database. 7. Update the SPFILE with the new location of the control file
by using the ALTER SYSTEM command. Identify the
correct sequence of the required steps.
A. 1, 3, 2, 6, 7, 4, 5
B. 1, 3, 7, 2, 6, 4, 5
C. 1, 3, 2, 4, 5
D. 1, 2, 6, 4, 5
E. 1, 6, 2, 4, 5
Answer: A
QUESTION 194
Your multitenant container database (CDB) contains some pluggable databases
(PDBs), you execute the following command in the root container:
Which two statements are true? (Choose two.)
A. Schema objects owned by the C# # A_ADMIN common user can be shared across
all PDBs.
B. The C # # A_ADMIN user will be able to use the TEMP_TS temporary tablespace
only in root.
C. The command will, create a common user whose description is contained in the
root and each PDB.
D. The schema for the common user C # # A_ADMIN can be different in each
container.
E. The command will create a user in the root container only because the container
clause is not used.
Answer: C D
QUESTION 195
Which three statements are true regarding the use of the Database Migration Assistant
for Unicode (DMU)? (Choose three.)
A. A DBA can check specific tables with the DMU
B. The database to be migrated must be opened read-only.
C. The release of the database to be converted can be any release since 9.2.0.8.
D. The DMU can report columns that are too long in the converted characterset.
E. The DMU can report columns that are not represented in the converted
characterset.
Answer: A D E
Explanation
A: In certain situations, you may want to exclude selected columns or
tables from scanning or conversion steps of the migration process.
D: Exceed column limit The cell data will not fit into a column after conversion.
E: Need conversion
The cell data needs to be converted, because its binary representation in the target
character set is different than the representation in the current character set,
but neither length limit issues nor invalid representation issues have been found
* Oracle Database Migration Assistant for Unicode (DMU) is a unique
next-generation migration tool providing an end to-end solution for migrating your
databases from legacy encodings to Unicode.
Incorrect:
Not C: The release of Oracle Database must be 10.2.0.4, 10.2.0.5, 11.1.0.7, 11.2.0.1,
or later.
QUESTION 196
On your Oracle Database, you issue the following commands to create indexes:
SQL > CREATE INDEX oe.ord_customer_ix1 ON oe.orders (customer_id,
sales_rep_id) INVISIBLE;
SQL> CREATE BITMAP INDEX oe.ord_customer_ix2 ON oe.orders (customer_id,
sales_rep_id);
Which two statements are true? (Choose two.)
A. Only the ORD_CUSTOMER_IX1 index created.
B. Both the indexes are updated when a row is inserted, updated, or deleted in the
ORDERS table.
C. Both the indexes are created: however, only ORD_CUSTOMERS_IX1 is used by
the optimizer for queries on the ORDERS table.
D. The ORD_CUSTOMER_IX1 index is not used by the optimizer even when the
OPTIMIZER_USE_INVISIBLE_INDEXES parameters is set to true.
E. Both the indexes are created and used by the optimizer for queries on the ORDERS
table.
F. Both the indexes are created: however, only ORD_CUSTOMERS_IX2 is used by
the optimizer for queries on the ORDERS table.
Answer: B F
Explanation
Not A: Both indexes are created fine.
B: The invisible index ORD_CUSTOMERS_IX1 and the bitmap index are both
updated by DML operations on the Orders table.
F: Since ORD_CUSTOMERS_IX1 is invisible only ORD_CUSTOMERS_IX2 is
used by the query optimizer.
Not C, Not D, Not E:
* ord_customer_ix1 is an invisible index and is therefore not used by the optimizer.
* VISIBLE | INVISIBLE Use this clause to specify whether the index is visible or
invisible to the optimizer. An invisible index is maintained by DML operations,
but it is not be used by the optimizer during queries unless you
explicitly set the parameter OPTIMIZER_USE_INVISIBLE_INDEXES to TRUE at
the session or system level.
Note: Specify BITMAP to indicate that index is to be created with a bitmap for each
distinct key, rather than indexing each row separately. Bitmap indexes store the
rowids associated with a key value as a bitmap. Each bit in the bitmap
corresponds to a possible rowid. If the bit is set, then it means that the row with the
corresponding rowid contains the key value. The internal representation of bitmaps
is best suited for applications with low levels of concurrent transactions,
such as data warehousing.
QUESTION 197
Which two statements are true when row archival management is enabled? (Choose
two.)
A. The ORA_ARCHIVE_STATE column visibility is controlled by the ROW
ARCHIVAL VISIBILITY session parameter.
B. The ORA_ARCHIVE_STATE column is updated manually or by a program that could
reference activity tracking columns, to indicate that a row is no longer considered active.
C. The ROW ARCHIVAL VISIBILITY session parameter defaults to active rows only.
D. The ORA_ARCHIVE_STATE column is visible if referenced in the select list of a query.
E. The ORA_ARCHIVE_STATE column is updated automatically by the Oracle Server
based on activity tracking columns, to Indicate that a row is no longer considered active.
Answer: C D
QUESTION 198
You create a table with the PERIOD FOR clause to enable the use of the Temporal
Validity feature of Oracle Database 12c.
Examine the table definition:
Which three statements are true concerning the use of the Valid Time Temporal
feature for the EMPLOYEES table? (Choose three.)
A. The valid time columns employee_time_start and employee_time_end are
automatically created.
B. The same statement may filter on both transaction time and valid temporal time by
using the AS OF TIMESTAMP and PERIOD FOR clauses.
C. The valid time columns are not populated by the Oracle Server automatically.
D. The valid time columns are visible by default when the table is described.
E. Setting the session valid time using
DBMS_FLASHBACK_ARCHIVE.ENABLE_AT_VALID_TIME sets the
visibility for data manipulation language (DML), data definition language (DDL), and
queries performed by the session.
Answer: A B C
QUESTION 199
You Execute the Following command to create a password file in the database server:
$ orapwd file =‘+DATA/PROD/orapwprod entries = 5 ignorecase = N format = 12’
Which two statements are true about the password file? (Choose two.)
A. It records the usernames and passwords of users when granted the DBA role.
B. It contains the usernames and passwords of users for whom auditing is enabled.
C. Is used by Oracle to authenticate users for remote database administration.
D. It records the usernames and passwords of all users when they are added to the
OSDBA or OSOPER operating system groups.
E. It supports the SYSBACKUP, SYSDG, and SYSKM system privileges.
Answer: C E
QUESTION 200
Examine these two statements:
Which three are true about the MRKT tablespace? (Choose three.)
A. The MRKT tablespace is created as a small file tablespace, because the file size is
less than the minimum required for big file files.
B. The MRKT tablespace may be dropped if it has no contents.
C. Users who were using the old default tablespace will have their default tablespaces
changed to the MRKT tablespace.
D. No more data files can be added to the tablespace.
E. The relative file number of the tablespace is not stored in rowids for the table rows
that are stored in the MRKT tablespace.
Answer: C D E
QUESTION 201
Which activity is audited by default and recorded in the operating system audit trail
irrespective of whether or not database auditing is enabled?
A. execution of SQL statements by users connected with the SYSDBA privilege
B. creation of a fine-grained audit policy
C. configuration of unified auditing mode
D. usage of the AUDIT statement
Answer: A
Explanation
References
https://docs.oracle.com/cd/B28359_01/network.111/b28531/auditing.htm#DBSEG0622
QUESTION 202
Your database instance has started using an SPFILE.
Examine the RMAN configuration settings:
You execute the command:
RMAN> BACKUP AS COPY TABLESPACE TEST;
Which three types of files are backed up by using this command? (Choose three.)
A. online redo log files
B. control file
C. SPFILE
D. archived redo log files
E. data file(s)
F. PFILE
Answer: B C E
Explanation
References:
http://www.juliandyke.com/Research/RMAN/BackupCommand.php
QUESTION 203
You are connected using SQL* Plus to a multitenant container database (CDB) with
SYSDBA privileges and execute the following sequence statements:
What is the result of the last SET CONTAINER statement and why is it so?
A. It succeeds because the PDB_ADMIN user has the required privileges.
B. It fails because common users are unable to use the SET CONTAINER statement.
C. It fails because local users are unable to use the SET CONTAINER statement.
D. If fails because the SET CONTAINER statement cannot be used with PDB$SEED
as the target pluggable database (PDB).
Answer: C
QUESTION 204
Which three statements are true about the Pre-Upgrade Information Tool? (Choose
three.)
A. It generates a script to recompile invalid objects post-upgrade.
B. The preupgrade_fixups.sql script is created to list and describe issues in the source
database.
C. A log file, preupgrade.log, is created that contains the output of the Pre-Upgrade
Information tool.
D. It checks for required tablespaces and if they are not available, creates them
automatically.
E. The preupgrade_fixups.sql script is executed automatically to fix issues in the
source database.
F. The postupgrade_fixups.sql script is created to address issues that can be fixed after
a database has been upgraded.
Answer: A C E
Explanation
References
https://docs.oracle.com/database/122/UPGRD/using-preupgrade-information-tool-for-
oracle database.htm#UPG
QUESTION 205
Which three statements are true about space usage alerts? (Choose three.)
A. Alerts are issued only when the critical threshold for space available in a
tablespace is breached.
B. The sum of active extents and allocated user quotas is considered to compute space
usage for an undo tablespace.
C. Database alerts can provide warnings about low space availability at both
tablespace and segment levels.
D. Alerts are not issued for locally managed tablespaces that are offline or in
read-only mode.
E. A newly created locally managed tablespace is automatically assigned the default
threshold values defined for a database.
Answer: A D E
Explanation
References:
https://docs.oracle.com/cd/B28359_01/server.111/b28310/schema001.htm#ADMIN1
0120
QUESTION 206
Which three activities are supported by the Data Recovery Advisor? (Choose three.)
A. Advising on block checksum failures
B. Advising on inaccessible control files
C. Advising on inaccessible block change tracking files
D. Advising on empty password files
E. Advising on invalid block header field values
Answer: A B E
Explanation
* Data Recovery Advisor can diagnose failures such as the following:
/ (B) Components such as datafiles and control files that are not accessible because
they do not exist, do not have the correct access permissions, have been taken
offline, and so on/ (A, E) Physical corruptions such as block checksum failures
and invalid block header field values / Inconsistencies such as a datafile that is
older than other database files / I/O failures such as hardware errors, operating
system driver failures, and exceeding operating system resource limits
(for example, the number of open files)
* The Data Recovery Advisor automatically diagnoses corruption or loss of persistent
data on disk, determines the
appropriate repair options, and executes repairs at the user's request. This reduces the
complexity of recovery process,
thereby reducing the Mean Time To Recover (MTTR).
QUESTION 207
In your multitenant container database (CDB) containing same pluggable databases
(PDBs), you execute the following commands in the root container:
Which two statements are true? (Choose two.)
A. The C # # ROLE1 role is created in the root database and all the PDBs.
B. The C # # ROLE1 role is created only in the root database because the container
clause is not used.
C. Privileges are granted to the C##A_ADMIN user only in the root database.
D. Privileges are granted to the C##A_ADMIN user in the root database and all PDBs.
E. The statement for granting a role to a user fails because the CONTAINER clause is
not used.
Answer: A C
Explanation
* You can include the CONTAINER clause in several SQL statements, such as the
CREATE USER, ALTER USER,
CREATE ROLE, GRANT, REVOKE, and ALTER SYSTEM statements.
* * CREATE ROLE with CONTAINER (optional) clause
/ CONTAINER = ALL Creates a common role.
/ CONTAINER = CURRENT
Creates a local role in the current PDB.
QUESTION 208
Which three operations can be performed as multipartition operations in Oracle?
(Choose three.)
A. Merge partitions of a list partitioned table
B. Drop partitions of a list partitioned table C. Coalesce partitions of a
hash-partitioned global index.
D. Move partitions of a range-partitioned table
E. Rename partitions of a range partitioned table
F. Merge partitions of a reference partitioned index
Answer: A B F
Explanation
Multipartition maintenance enables adding, dropping, truncate, merge, split operations
on multiple partitions.
A: Merge Multiple Partitions:
The new “ALTER TABLE … MERGE PARTITIONS ” help merge multiple
partitions or subpartitions with a single statement. When merging multiple
partitions, local and global index operations and semantics for inheritance of
unspecified physical attributes are the same for merging two partitions.
B: Drop Multiple Partitions: The new “ALTER TABLE … DROP PARTITIONS ”
help drop multiple partitions or subpartitions with a single statement.
Example:
view plaincopy to clipboardprint?
SQL> ALTER TABLE Tab_tst1 DROP PARTITIONS
Tab_tst1_PART5, Tab_tst1_PART6, Tab_tst1_PART7;
Table altered
SQL>
Restrictions :
- You can’t drop all partitions of the table.
- If the table has a single partition, you will get the error: ORA-14083: cannot drop
the only partition of a partitioned.
QUESTION 209
Identify two situations in which the alert log file is updated.
A. Running a query on a table returns ORA-600: Internal Error.
B. Inserting a value into a table returns ORA-01722: invalid number.
C. Creating a table returns ORA-00955: name us already in used by an existing
objects.
D. Inserting a value into a table returns ORA-00001: unique constraint
(SYS.OK_TECHP) violated.
E. Rebuilding an index using ALTER INDEX . . . REBUILD fails with an
ORA-01578: ORACLE data block corrupted
(file # 14, block # 50) error.
Answer: A E
Explanation
The alert log is a chronological log of messages and errors, and includes the following
items:
*All internal errors (ORA-600), block corruption errors (ORA-1578), and deadlock
errors (ORA-60) that occur
* Administrative operations, such as CREATE, ALTER,and DROP statements and
STARTUP, SHUTDOWN, and ARCHIVELOG statements
* Messages and errors relating to the functions of shared server and dispatcher
processes
* Errors occurring during the automatic refresh of a materialized view
* The values of all initialization parameters that had nondefault values at the time the
database and instance start
Note:
* The alert log file (also referred to as the ALERT.LOG) is a chronological log of
messages and errors written out by an Oracle Database. Typical messages found
in this file is: database startup, shutdown, log switches, space errors, etc. This
file should constantly be monitored to detect unexpected messages and corruptions.
QUESTION 210
Your multitenant container database has three pluggable databases (PDBs): PDB1,
PDB2, and PDB3.Which two RMAN commands may be; used to back up only
the PDB1 pluggable database? (Choose two.)
A. BACKUP PLUGGABLE DATABASE PDB1 while connected to the root
container
B. BACKUP PLUGGABLE DATABASE PDB1 while connected to the PDB1
container
C. BACKUP DATABASE while connected to the PDB1 container
D. BACKUP DATABASE while connected to the boot container
E. BACKUP PLUGGABLE database PDB1 while connected to PDB2
Answer: A C
Explanation
To perform operations on a single PDB, you can connect as target either to the root or
directly to the PDB.
* (A) If you connect to the root, you must use the PLUGGABLE DATABASE syntax
in your RMAN commands. For example, to back up a PDB, you use the
BACKUP PLUGGABLE DATABASE command.
* (C)If instead you connect directly to a PDB, you can use the same commands that
you would use when connecting to a non-CDB. For example, to back up a PDB,
you would use the BACKUP DATABASE command.
References:
QUESTION 211
You have successfully taken a database backup by using the command:
RMAN> BACKUP AS BACKUPSET DATABASE;
Now you execute this command:
RMAN> BACKUP INCREMENTAL LEVEL 1 DATABASE;
What is the outcome?
A. It fails because an incremental level 1 backup always searches for an image copy
as level 0 backup.
B. It fails because an incremental level 0 backup does not exist.
C. It takes a backup of blocks that have been formatted since the last full database
backup.
D. It takes an incremental level 0 backup of the database.
E. It first takes an incremental level 0 backup and then an incremental level 1 backup.
Answer: E
Explanation
References: https://docs.oracle.com/cd/B19306_01/backup.102/b14192/bkup004.htm
(4.4.1.2)
QUESTION 212
Flashback is enabled for your multitenant container database (CDB), which contains
two pluggable database (PDBs). A local user was accidently dropped from one of the PDBs.
You want to flash back the PDB to the time before the local user was dropped. You
connect to the CDB and execute the following commands:
SQL > SHUTDOWN IMMEDIATE SQL > STARTUP MOUNT
SQL > FLASHBACK DATABASE to TIME “TO_DATE (‘08/20/12’ ,
‘MM/DD/YY’)”; Examine following commands:
1. ALTER PLUGGABLE DATABASE ALL OPEN;
2. ALTER DATABASE OPEN;
3. ALTER DATABASE OPEN RESETLOGS;
Which command or commands should you execute next to allow updates to the
flashback back schema?
A. Only 1
B. Only 2
C. Only 3
D. 3 and 1
E. 1 and 2
Answer: D
QUESTION 213
Which three statements are true about Oracle Restart? (Choose three.)
A. It can be configured to automatically attempt to restart various components after a
hardware or software failure.
B. While starting any components, it automatically attempts to start all dependencies
first and in proper order.
C. It can be configured to automatically restart a database in case of normal shutdown
of the database instance.
D. It can be used to only start Oracle components.
E. It runs periodic check operations to monitor the health of Oracle components.
Answer: B D E
QUESTION 214
Which statement is true about profiles?
A. Resource limits specified in a profile assigned to a user are always enabled.
B. A user can exist without any profile.
C. A profile can be assigned only to one user.
D. Password management using profiles is always enabled.
Answer: D
QUESTION 215
Examine this command executed on a client that is remote from the database server.
SQL> CONNECT hr/hr@orcl
Which two are required for this command to connect the SQLPLUS client to a
database instance? (Choose two.)
A. An orcl TNS entry must be defined in the client-side and server-side tnsnames.ora
files
B. An orcl TNS entry must be defined in the client-side tnsnames.ora file
C. A service name must be defined to the listener that matches the service name in the
orcl TNS entry
D. An orcl TNS entry must be defined in the server-side tnsnames.ora file
E. The service name orcl must be defined to the listener
Answer: D E
QUESTION 216
You enabled block change tracking for faster incremental backups in your database.
Which background process writes to the change tracking file?
A. RBAL
B. CKPT C. SMON
D. PMON
E. MMON
F. CTWR
G. DBWR
Answer: F
QUESTION 217
Which statement is true about a database in ARCHIVELOG mode?
A. All backups taken prior to switching to ARCHIVELOG mode can be used to
perform complete recovery.
B. Online redo log files have to be multiplexed before putting the database in
ARCHIVELOG mode.
C. A Fast Recovery Area (FRA) must be configured for the database.
D. Full database backups can be performed when the database is opened.
Answer: D
QUESTION 218
You have a production Oracle 12c database running on a host.
You want to install and create databases across multiple new machines that do not
have any Oracle database software installed. You also want the new databases to have
the same directory structure and components as your existing 12c database.
The steps in random order:
1. Create directory structures similar to the production database on all new machines.
2. Create a response file for Oracle Universal Installer (OUI) with the same
configurations as the production database.
3. Create a database clone template for the database.
4. Run the Database Configuration Assistant (DBCA) to create the database.
5. Run OUI in graphical mode on each machine.
6. Run OUI in silent mode using the OUI response file.
Identify the required steps in the correct sequence to achieve the requirement with
minimal human intervention.
A. 1, 5, and 4
B. 3, 1, 5, and 6
C. 2, 3, 6, and 4
D. 2, 1, 6, and 4
E. 2, 3, 1, and 6
Answer: E
QUESTION 219
The schema SALES exists in two databases, ORCL1 and ORCL2, and has the same
password, SALES123. User SALES has CREATE DATABASE LINK and
CREATE SESSION privileges on both databases. Examine these commands:
Conn SALES/SALES123 CREATE DATABASE LINK orcl2 USING 'orcl2';
What is the outcome of executing these commands in the ORCL1 database?
A. ORCL2 is created as a public database link to connect a single session to the
SALES schema in the ORCL2 database.
B. ORCL2 is created as a shared database link to connect multiple sessions to
the SALES schema in the ORCL2 database.
C. ORCL2 is created as a private database link to connect to only the SALES schema
in the ORCL2 database.
D. ORCL2 database link creation fails.
Answer: C
QUESTION 220
Identify two prerequisites for configuring Enterprise Manager Database Express (EM
Express).
A. Grant the APEX_PUBLIC_USER role to the SYSMAN user.
B. Use the DBMS_XDB_CONFIG.SETHTTPPORT procedure to configure a port
number for Oracle HTTP Server.
C. Install Oracle HTTP Server.
D. Configure at least one dispatcher for the TCP/IP protocol.
E. Create a SYSMAN user with the SYSDBA privilege as an administrator for EM
Express.
Answer: B D
QUESTION 221
What is the outcome of the SHUTDOWN ABORT command?
A. Pending transactions are committed and the database is closed.
B. Dirty buffers in the buffer cache and unwritten redo are not written to the data files
and redo log files respectively.
C. Uncommitted transactions are rolled back
D. Instance recovery must be requested by the DBA at the next startup
Answer: B
QUESTION 222
You want to create a database and you have the following:
- Oracle Grid Infrastructure is installed and configured.
- Oracle Database Vault is installed in ORACLE_HOME to be used for this database.
- Oracle Enterprise Manager Cloud Control is available and an agent is deployed on
the database server. Examine the
requirements:
1. configuring the database instance to support shared server mode
2. using Automatic Storage Management (ASM) for storing database files.
3. configuring a naming method to help a remote user connect to a database instance
4. configuring the Fast Recovery Area
5. configuring Database Vault
6. configuring Enterprise Manager (EM) Database Express
7. registering with EM Cloud Control
8. configuring remote log archive destinations
9. enabling daily incremental backups
10. configuring a nondefault block size for nondefault block size tablespaces
Which of these requirements can be met while creating a database by using the
Database Configuration Assistant (DBCA)?
A. 1, 2, 4, 5, 7, 8, 9 and 10
B. 1, 2, 4, 5, 6 and 7 C. 1, 2, 3, 8, 9 and 10
D. 1, 2, 3, 4, 6, 8, 9 and 10
E. 1, 2, 4, 5, 6, 7 and 8
Answer: D
QUESTION 223
Which three statements are true about server-generated alerts? (Choose three.)
A. Server-generated alerts notify administrators of problems that cannot be resolved
automatically.
B. Alerts are not issued for locally managed read-only tablespaces.
C. Response actions cannot be specified for server-generated alerts.
D. Stateful alerts can be queried only from the DBA_ALERT_HISTORY view.
E. When an alert is cleared, it is moved to the DBA_ALERT_HISTORY view.
Answer: A B E
Explanation
References
https://docs.oracle.com/cd/B28359_01/server.111/b28310/schema001.htm#ADMIN10120
QUESTION 224
In your database, the STATISTICS_LEVEL parameter is set to TYPICAL and an
Automatic Workload Repository (AWR) snapshot is taken every 30 minutes.
Which two statements are true about the Automatic Database Diagnostic Monitor
(ADDM)? (Choose two.)
A. It measures database performance by analyzing the wait time and CPU time of all
non-idle user sessions.
B. It always compares the latest snapshot with the baseline snapshot for analysis.
C. It runs after each AWR snapshot is created and it requires at least two snapshots
for analysis.
D. It requires at least four AWR snapshots for analysis.
E. It calls other advisors if required, but does not provide recommendations about the
advisors to be used.
Answer: A C
QUESTION 225
Which three functions can be performed by the SQL Tuning Advisor? (Choose three.)
A. recommending creation of indexes based on SQL workload
B. recommending restructuring of SQL statements that have suboptimal plans
C. checking schema objects for missing and state statistics
D. recommending optimization of materialized views
E. generating SQL profiles
Answer: B C E
QUESTION 226
Identify three uses of the CROSSCHECK command (Choose three.)
A. to validate the database backup
B. to synchronize logical backup records with physical files in backup storage
C. to check the obsolete backups that can be deleted from the file system
D. to update information about backups that are deleted, corrupted, or inaccessible in
a recovery catalog or control file
E. to update the recovery catalog or control file if archived log files are deleted with
operating system commands
Answer: B D E
QUESTION 227
Examine the following steps:
A DBA grants the CREATE TABLE system privilege with ADMIN OPTION to the
user SIDNEY. SIDNEY grants the CREATE TABLE system privilege to the HR user.
Which statement is true?
A. SIDNEY can revoke the CREATE TABLE system privilege only from HR, to
whom he granted it.
B. HR can grant the CREATE TABLE system privilege to other users.
C. Neither SIDNEY nor HR can create new tables if the DBA revokes the CREATE
TABLE privilege from SIDNEY.
D. HR still retains the CREATE TABLE system privilege if the DBA revokes the
CREATE TABLE privilege from SIDNEY.
Answer: D
Explanation
References:
http://www.dba-oracle.com/t_with_grant_admin_privileges.htm
QUESTION 228
The performance of your database degrades between 11:00 AM and 3:00 PM.
Automatic Workload Repository (AWR) snapshots are collected on an hourly basis.
What is the most efficient way of diagnosing this problem?
A. Create a custom ADDM task for the period defined by the snapshots taken
between 11:00 AM and 3:00 PM.
B. Analyze the latest Automatic Database Diagnostic Monitor (ADDM) report.
C. Analyze the hourly ADDM reports generated between 11:00 AM and 3:00 PM.
D. Create a SQL Tuning Set (STS) for the currently cached SQL statements in the
shared pool and run SQL Performance Analyzer (SPA) to generate recommendations.
Answer: A
QUESTION 229
In which situations does the Database Writer process (DBWn) write to data files?
(choose two).
A. when the RMAN recovery process starts
B. when a user process commits a transaction
C. when a tablespace is made read-only or taken offline
D. when PMON cleans up dirty buffers in the database buffer cache
E. when clean buffers for reading new blocks into the database buffer cache are not
found easily
Answer: B D
Explanation
References https://docs.oracle.com/cd/B19306_01/server.102/b14220/process.htm
QUESTION 230
A database uses Automatic Storage Management (ASM) as database storage, which
has a diskgroup, DATA1, which is created as follows:
What happens when the FAILGRP1 failure group is corrupted?
A. Mirroring of allocation units occurs within the FAILGRP2 failure group.
B. Transactions that are using the diskgroup fail.
C. ASM does not mirror any data and newly allocated primary allocation units (AU)
are stored in the FAILGRP2 failure group.
D. Data in the FAILGRP1 failure group is moved to the FAILGRP2 failure group and
rebalancing is started.
Answer: D
QUESTION 231
You create a locally managed tablespace ORDERS_TBS with automatic segment
management. You then create the table DAILY_ORDS_LST in the ORDERS_TBS tablespace
using the command. CREATE TABLE daily_ords_1st(ordno NUMBER, ord_date DATE) PCTFREE 20;
How does the PCTFREE storage parameter influence data storage for this table?
A. It allows only 80% of space to be occupied in all data blocks of this table.
B. It minimizes row chaining during row insertion.
C. It minimizes row migration during existing row data updation.
D. It automatically coalesces free space of a data block when it reaches 20% of
available space.
Answer: A
QUESTION 232
Which statement is true regarding the DEFAULT profile?
A. The values assigned to the resource limits and password parameters in the default
profile can be altered.
B. A different DEFAULT profile can be created before each user in a database.
C. It can be dropped and recreated.
D. it must be explicitly assigned to the user.
Answer: A
QUESTION 233
The HR schema exists in two databases, BOSTON and DENVER, and has the same
password, HR. You have the CREATE DATABASE LINK and CREATE SESSION
privileges on both the database. BOSTON is defined as a service name in the
tnsnames.ora of both the databases. You plan to use the command:
CREATE DATABASE LINK hr_link CONNECT to hr IDENTIFIED BY hr USING
'denver'; What must be done to ensure only the HR user in the BOSTON
database can access the HR schema in the DENVER database?
A. Execute this command as HR user in the BOSTON database and SYS user in the
DENVER database.
B. Execute this command as SYS user in both the databases.
C. Execute this command as HR user in the DENVER database.
D. Execute this command as HR user in the BOSTON database.
Answer: D
QUESTION 234
The HR user owns the BONUSES table. HR grants privileges to the user TOM by
using the command:
SQL> GRANT SELECT ON bonuses TO tom WITH GRANT OPTION;
TOM then executes this command to grant privileges to the user JIM:
SQL> GRANT SELET ON hr.bonuses TO jim;
Which statement is true?
A. TOM cannot revoke the SELECT ON HR.BONUSES privilege from JIM.
B. HR can revoke the SELECT ON HR.BONUSES privilege from JIM.
C. JIM can grant the SELECT ON HR.BONUSES privilege to other users, but cannot
revoke the privilege from them.
D. HR can revoke the SELECT ON HR.BONUSES privilege from TOM, which will
automatically revoke the SELECT ON HR.BONUSES privilege from JIM.
Answer: D
QUESTION 235
What must you use to read data from a table in your database and write it to an
external table?
A. Use SQL* LOADER conventional path load.
B. Use SQL* LOADER direct path load.
C. Use CREATE TABLE. . ORGANIZATION EXTERNAL command with
ORACLE_LOADER access driver.
D. Use CREATE TABLE. . ORGANIZATION EXTERNAL command with
ORACLE_DATAPUMP access driver.
Answer: D
QUESTION 236
You create an Oracle 12c database and then import schemas that are required by an
application which has not yet been developed.
You want to get advice on creation of or modifications to indexes, materialized views
and partitioning in these schemas. What must you run to achieve this?
A. SQL Access Advisor with a SQL tuning set
B. B. Automatic Database Diagnostic Monitor (ADDM) report
C. SQL Tuning Advisor
D. SQL Access Advisor with a hypothetical workload
E. SQL Performance Analyzer
Answer: D
QUESTION 237
In your database instance, the UNDO_RETENTION parameter is set to 1000 and
undo retention is not guaranteed for the fixed size undo tablespace.
Which statement is true about undo retention?
A. Undo is retained in the UNDO tablespace for 1000 seconds, and then moved to the
SYSTEM tablespace to provide read consistency.
B. Inactive undo is retained for at least 1000 seconds if free undo space is available.
C. Inactive undo is retained for 1000 seconds even if new transactions fall due to lack
of space in the undo tablespace.
D. Undo becomes expired obsolete after 1000 seconds.
Answer: B
QUESTION 238
Which two services may you see on the My Service Dashboard page? (Choose two.)
A. Network Cloud Service
B. User Cloud Service
C. Compute Cloud Service
D. Database Cloud Service
Answer: C D
QUESTION 239
What is a requirement for creating a remote database scheduler job?
A. The remote database job must run as a user that is valid on the target remote
database.
B. A private database link must be created from the originating database to the target
remote database.
C. The target remote database on which the job is scheduled must be Oracle Database
11g Release 2 or later.
D. The target remote database must be on a different host form the originating
scheduler database host.
Answer: A
QUESTION 240
You want execution of large database operations to suspend, and then resume, in the
event of space allocation failures. You set the value of the initialization parameter
RESUMABLE_TIMEOUT to 3600.Which two statements are true? (Choose two.)
A. Before a statement executes in resumable mode, the ALTER SESSION ENABLE
RESUMABLE statement must be issued in its session.
B. Data Manipulation Language (DML) operations are resumable, provided that they
are not embedded in a PL/SQL block.
C. A resumable statement can be suspended and resumed only once during execution.
D. A suspended statement will report an error if no corrective action has taken place
during a timeout period.
E. Suspending a statement automatically results in suspending a transaction and
releasing all the resources held by the transaction.
Answer: A D
QUESTION 241
An application repeatedly accesses small lookup tables, causing a lot of physical I/O
operations. What do you recommend to minimize this?
A. Configure the nonstandard buffer cache with a buffer size greater than the size of
the default buffer cache.
B. Increase the size of the shared pool
C. Configure the KEEP buffer cache and alter the tables to use the KEEP cache.
D. Configure the RECYCLE buffer cache and alter the tables to use the RECYCLE
cache.
Answer: C
QUESTION 242
In your database, archive logging and control file autobackup are enabled.
The data files and redo log files are intact but control files are impacted due to media
failure. In which two recovery scenarios must you use the RESETLOGS option? (Choose two.)
A. One control file copy is intact so the spfile is changed to refer to only one copy.
B. One control file copy is intact and damaged control file copies have to be restored
to the default location.
C. All copies of the control file are damaged and the CREATE CONTROLFILE
statement is executed manually.
D. All copies of the control file are damaged and the auto backed up control file is
used for recovery.
E. One control file copy is intact and damaged control file copies have to be restored
to a non-default location.
Answer: C D
QUESTION 243
Which two statements are true about Oracle network connections? (Choose two.)
A. A listener may listen on behalf of only one database instance at a time.
B. A server process checks a user’s authentication credentials and creates a session if
the credentials are valid.
C. The listener continuously monitors a connection after the user process connects to
a service handler.
D. The listener always spawns a new server process to deal with each new connection.
E. A connection request from a client is always first received by a listener running on
the port that is used for the connection request for the database server.
Answer: B E
QUESTION 244
Which three statements are true about naming methods? (Choose three.)
A. Local naming supports multiple protocols, but for any one connection,
the client and server must use the same protocol.
B. In the Easy Connect method, clients can connect to a database server by using the
host name of the database with an optional port and service name.
C. In the Easy Connect method, the listener port and IP address must be provided for
the connection to be successful.
D. The local naming method does not support connect-time failover and
load-balancing options.
E. The directory naming method supports connect-time failover and load-balancing options.
Answer: A B E
QUESTION 245
Which two statements are true about SQL *Loader Express Mode in an Oracle 12c
database? (Choose two.)
A. The DEGREE_OF_PARALLELISM parameter is set to AUTO.
B. You cannot have multiple SQL *Loader data files.
C. If no data file is specified, it assumes the data file to be .dat in the current directory
and uses it.
D. You can have multiple bad files created when loading in parallel.
E. You can selectively load rows into a table based on a filter.
Answer: A C
Explanation
References:
https://docs.oracle.com/database/121/SUTIL/GUID-0F35B551-861B-450D-8BF3-
2312893A67D7.htm#SUTIL3
QUESTION 246
Which three database operations can be performed only at MOUNT state?
(Choose three.)
A. performing Flashback Database
B. renaming control files
C. enabling or disabling ARCHIVELOG mode
D. re-creating control files
E. performing full database recovery
Answer: A C E
QUESTION 247
Which three statements are true about windows? (Choose three.)
A. Only one window can be open at any given time
B. Consumer groups are associated with windows
C. Windows work with job classes to control resource allocation
D. The database service name must be provided during windows creation
E. Windows can automatically start job or change resource allocation among jobs for
various time periods
Answer: A C E
QUESTION 248
Automatic Shared Memory Management is enabled for your database instance. You
notice that there are SQL statements performing poorly because of repeated parsing activity.
Which action generates recommendations to overcome the performance issues?
A. running the Memory Advisor for the buffer cache
B. running the Memory Advisor for the library cache
C. running the Memory Advisor for the SGA
D. running the Memory Advisor for the PGA
Answer: B
QUESTION 249
Which files must you copy from the Oracle home of the database that is being
upgraded to the new Oracle home for Oracle Database 12c? (Choose three.)
A. the tnsnames.ora file
B. the sqlnet.ora file
C. the initialization parameter file
D. the password file
E. the listener.ora file
Answer: A B E
Explanation
References
https://docs.oracle.com/cd/E11882_01/server.112/e23633/afterup.htm#UPGRD52747
QUESTION 250
Which four statements are true about the components of the Oracle Scheduler?
(Choose four.)
A. A schedule can be specified to a single job only.
B. A scheduler job can point to a chain instead of pointing to a single program object.
C. A job may get started automatically when a window opens.
D. A program and job can be specified as part of a schedule definition.
E. A job is specified as part of a program specification.
F. A program can be used in the definition of multiple jobs.
G. A program and schedule can be specified as part of a job definition.
Answer: B C F G
Explanation
References: https://docs.oracle.com/cd/B19306_01/server.102/b14231/schedover.htm
QUESTION 251
Which three are activities performed by SMON? (Choose three.)
A. cleaning up the database buffer cache and freeing resources that a client process
was using
B. applying online redo during instance recovery
C. cleaning up temporary segments that are no longer needed
D. performing database services registration with the default listener
E. restarting a server or a dispatcher process that terminated abnormally
F. recovering failed transactions that were skipped during instance recovery because
of file-read or tablespace offline errors
Answer: B C F
QUESTION 252
Which three statements are true about Enterprise Manager Database Express?
(Choose three.)
A. It can be used to perform database backup operations.
B. It can use the HTTP protocol.
C. The same port number is used for multiple Database Express configurations on the
same host.
D. It can use the HTTPS protocol.
E. It is available only when the database is open.
Answer: B D E
QUESTION 253
Which set of statements is true about data dictionary views?
1. They are stored in the SYSTEM tablespace.
2. They are based on virtual tables.
3. They are owned by the SYS user.
4. They can be queried by a normal user only if the
07_DICTIONARY_ACCESSIBILITY parameter is set to TRUE.
5. The V$FIXED_TABLE view can be queried to list the names of these views.
6. They are owned by the SYSTEM user.
A. 2, 5, and 6
B. 1, 2, and 3
C. 1 and 3
D. 2, 3, 4, and 5
Answer: C
Explanation
References:
https://docs.oracle.com/cd/E11882_01/server.112/e40540/datadict.htm#CNCPT002
QUESTION 254
Which two statements are true about using SQL*Loader? (Choose two.)
A. It can load data from external files by using the direct path only.
B. It can load data into multiple tables using the same load statement.
C. It can load data into only one table at a time.
D. It can generate unique sequential key values in specified columns.
E. It can load data from external files by using the conventional path only.
Answer: A C
QUESTION 255
Which three file types are stored in the Fast Recovery Area by default in a traditional
nonOMF file system? (Choose three.)
A. online redo log files
B. parameter file
C. multiplexed copies of the current control file
D. archived log files
E. Flashback Data Archive files
F. Flashback logs
Answer: A D F
QUESTION 256
Your database is configured in ARCHIVELOG mode, and a daily full database
backup is taken by using RMAN.Control file autobackup is configured.
Loss of which three database files can lead to an incomplete recovery?
(Choose three.)
A. inactive online redo log file group
B. a data file belonging to the default temporary tablespace
C. a data file belonging to the SYSAUX tablespace
D. server parameter le (SPFILE)
E. active online redo log le group
F. all the control flies
Answer: A E F
QUESTION 257
You want to load data from a large file into your database without causing an
overhead on the SGA. Which tool would you use.
A. external table
B. Oracle data Pump
C. SQL*Loader with a direct data path
D. SQL*Loader with a conventional data path
E. Enterprise Manager Database Express
Answer: C
Explanation
References:
https://docs.oracle.com/cd/B19306_01/server.102/b14215/ldr_modes.htm#i1007501
QUESTION 258
You want to create a locally managed tablespace called NEWTBS to store segments
with different extent sizes. Which set of tablespace attributes can be specified for
a tablespace that satisfies the requirements?
A. EXTENT MANAGEMENT LOCAL STORAGE (INITIAL 5M MAXSIZE 10M)
B. REUSE AUTOEXTEND ON MAXSIZE UNLIMITED
C. EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT
UNIFORM
D. EXTENT MANAGEMENT LOCAL AUTOALLOCATE
Answer: D
QUESTION 259
Examine the following command:
SQL> DBMS_STATS. SET_TABLE_PREFS ('SH', 'CUSTOMERS', 'PUBLISH',
'false'); What is the effect of executing this command?
A. Existing statistics for the CUSTOMERS table become unusable for the query
optimizer.
B. Automatic statistics collection is stopped for the CUSTOMERS table. C. Statistics
for the CUSTOMERS table are locked and cannot be overwritten.
D. Statistics subsequently gathered on the CUSTOMERS table are stored as pending
statistics.
Answer: D
QUESTION 260
Which four operations performed after the Oracle Restart installation are
automatically added to the Oracle Restart configuration? (Choose four.)
A. listener configured by using NETCA
B. database service created by using SRVCTL
C. database created by using a SQL statement
D. database created by using DBCA
E. ASM instance created by using ASMCA
F. database service created by using DBMS_SERVICE.CREATE_SERVICE
G. database service created by modifying the SERVICE_NAMES initialization
parameter
Answer: A B D E
Explanation
References
https://docs.oracle.com/cd/E18283_01/server.112/e17120/restart002.htm#insertedID3
QUESTION 261
The HR.DEPARTMENTS table is the parent of the HR.EMPLOYEES table.
The EMPLOYEES.DEPARTMENT_ID column has a foreign key constraint
with the ON DELETE CASCADE option that refers to the
DEPARTMENTS.DEPARTMENT_ID column. An index exists on the
DEPARTMENTS.DEPARTMENT_ID column. A transaction deletes a primary
key in the DEPARTMENTS table, which has child rows in the EMPLOYEES table.
Which statement is true?
A. The transaction acquires a table lock only on the DEPARTMENTS table until the
transaction is complete.
B. The transaction acquires a table lock on the DEPARTMENTS table. This lock
enables other sessions to query but not update the DEPARTMENTS table until
the transaction on the DEPARTMENTS table is complete.
C. The transaction acquires a table lock on the EMPLOYEES table. This lock enables
other sessions to query but not update the EMPLOYEES table until the transaction
on the DEPARTMENTS table is complete.
D. Only the rows that are deleted in the DEPARTMENTS and EMPLOYEES tables
are locked until the transactions on the DEPARTMENTS table is complete.
Answer: C
QUESTION 262
Which two tasks must you perform before you begin the upgrade process to Oracle
Database 12c? (Choose two.)
A. Put all readonly tablespaces in read write mode
B. Recompile all invalid objects
C. Set the compatible parameter to 12.1.0.1
D. Gather dictionary statistics
E. Empty all user recycle bins
Answer: B E
QUESTION 263
You plan to upgrade your Oracle Database 9i to Oracle Database 12c.
Which two methods can you use? (Choose two.)
A. Perform a rolling upgrade.
B. Perform a direct upgrade by running the Database Upgrade Assistant (DBUA).
C. Perform a direct upgrade by manually running the catctl.pl and catupgrd.sql scripts
before issuing the STARTUPUPGRADE command.
D. Install the Oracle Database 12c software, create a new Oracle 12c database, and
then use the Oracle Data Pump to import data from the source Oracle 9i database
to the target Oracle 12c database.
E. Upgrade your current database to Oracle Database release 10.2.0.5, and then
upgrade to Oracle Database 12c.
Answer: A E
QUESTION 264
Which statement is true about using the Export/Import method for migrating data
when upgrading to Oracle Database 12c?
A. It automatically restarts a Data Pump Export or Import job after a failure is
connected and the job continues from the point of failure.
B. It can be used to migrate a database only if the source and target databases are
hosted on the same endian format.
C. It can be used to migrate a database only if the source database does not have any
tablespace in read-only mode.
D. It allows migration of a database directly over network links.
Answer: D
QUESTION 265
Which two statements are true about Oracle Data Pump export and import operations?
(Choose two.)
A. You cannot specify how partitioned tables should be handled during an import
operation.
B. Only data can be compressed during an export operation.
C. Existing dump files can be overwritten during an export operation.
D. Tables cannot be renamed during an import operation.
E. Metadata that is exported and imported can be filtered based on objects and object types.
Answer: A E
Explanation
References
https://docs.oracle.com/cd/B28359_01/server.111/b28300/expimp.htm#UPGRD12560
QUESTION 266
What is the benefit of running the catctl.pl script during an upgrade of a pre-12c
database to an Oracle 12c database?
A. It provides a summary of the upgrade results.
B. It recompiles all invalid PL/SQL and Java code.
C. It generates a log file containing the fixes that can be made to the source database.
D. It provides parallel upgrade options to finish the upgrade process with a reduced
down time.
E. It generates fix-up scripts to be run on the source database before
upgrade.
Answer: D
Explanation
References:
https://docs.oracle.com/database/121/UPGRD/upgrade.htm#UPGRD52860
QUESTION 267
Examine the command:
SQL> CREATE TABLESPACE test1 DATAFILE '/u01/app/oracle/oradata/orc1/test01.dbf'
SIZE 5M AUTOEXTEND ON UNIFORM; Which statement is true?
A. The data file, TEST01.DBF, can be auto extended to a maximum size M.
B. The tablespace, TEST1, can contain a maximum of one data file.
C. Allocated and free extents are tracked using bitmaps.
D. Segment free space is tracked in the data dictionary.
Answer: C
QUESTION 268
You want to import the schema objects of the HR user from the development database
DEVDB to the production database PRODDB by using Oracle Data Pump. A
database link devdb.us.oracle.com is created between PRODDB and DEVDB.
You execute the following command on the PRODDB database server:
What should you do to resolve the error?
A. Add network_link = devdb.us.oracle.com.
B. Add the SYSTEM user to the schemas option.
C. Change the dumpfile option value to schema.dat@devdb.us.oracle.com.
D. Replace the schemas option with network_1ink = devdb.us.oracle.com.
E. Replace the dumpfile option with network_1ink = devdb.us.oracle.com.
Answer: E
QUESTION 269
Your database is running in ARCHIVELOG mode. You want to take a consistent
whole database backup. Which two statements are true in this scenario? (Choose two.)
A. The user-managed backup consists of only formatted data blocks.
B. The database must be shut down to take a user-managed backup.
C. The RMAN backup contains only data files.
D. The RMAN backup can be performed while the database is open.
E. The database must be in MOUNT state to take RMAN backup.
Answer: A B
QUESTION 270
Identify three situations in which messages are written to the alert log file.
(Choose three.)
A. Rebuilding an index using ALTER INDEX . . . REBUILD fails with an
ORA-01578: ORACLE data block corrupted (file # 14, block # 50)"
B. Creating a table returns "ORA-00955: name is already in used by
an existing object"
C. Inserting a value into a table returns "ORA-01722: invalid number"
D. Updating a record in a table returns "ORA-00060: deadlock detected
while waiting for resource"
E. Inserting a value into a table returns "ORA-00001: unique constraint
(SYS.PK_XXXX) violated"
F. Running a query on a table returns "ORA-01578: ORACLE data block
corrupted (file # 4, block # 131)"
Answer: A D F
QUESTION 271
You configured the Fast Recovery Area (FRA) for your database. The database
instance is in ARCHIVELOG mode. The default location for the archived redo log
files is the FRA. Which two files are removed automatically if space is required
in the FRA as per the retention policy? (Choose two.)
A. Archived redo log files that have multiple copies in a different archive location
B. user-managed backups of data files and control files
C. RMAN backups that are obsolete
D. flashback logs
Answer: C D
QUESTION 272
Your database supports a Decision Support System (DSS) workload that involves the
execution of complex queries. Currently, the database is running with peak workload.
You want to analyze some of the most resource-intensive statements cached in the library cache.
What must you run to receive recommendations on the efficient use of indexes and
materialized views to improve query performance?
A. Automatic Database Diagnostic Monitor (ADDM)
B. SQL Tuning Advisor
C. SQL Access Advisor
D. SQL Performance Analyzer
E. Automatic Workload Repository (AWR) report
Answer: C
Explanation
References:
https://docs.oracle.com/cd/B28359_01/server.111/b28314/tdpdw_perform.htm#TDPDW00813
QUESTION 273
For which three requirements would you use the Database Resource Manager?
(Choose three.)
A. specifying an idle time limit that applies to sessions that are idle and blocking other
sessions
B. limiting the degree of parallelism of operations performed by user sessions in a
consumer group
C. specifying the maximum number of concurrent sessions allowed for a user
D. limiting the CPU used per database call
E. specifying the amount of private space a session can allocate in the shared pool of
the SGA.
Answer: A B C
Explanation
References:
http://docs.oracle.com/cd/B19306_01/server.102/b14231/dbrm.htm
QUESTION 274
You want to create a test database as a replica of your production database with
minimum intervention from a DBA. Which method would you use?
A. Use DBCA to create a template from the existing database to contain the database
structure and then manually copy the data by using Oracle Data Pump.
B. Use Database Configuration Assistant (DBCA) to create a template from the
existing database to contain the database structure.
C. Create the database by using the CREATE DATAEASE. . . command and
manually import data by using Data Pump.
D. Use DBCA to create a template from the existing database to contain the database
structure with data files and then use the same template to create the database in the
new location.
Answer: A
QUESTION 275
Which three statements are true about checkpointing? (Choose three.)
A. It prompts the Checkpoint (CKPT) process to write data to the data files and redo
information to the online redo log files.
B. It ensures that all dirty buffers are written to data files during consistent shutdown.
C. It reduces the time required for recovery in case of an instance failure.
D. Frequent thread checkpoints can degrade database performance.
E. It prompts the Database Writer (DBWn) process to write checkpoint information
into data file headers and the control file.
Answer: B C D
QUESTION 276
Which component resides in the System Global Area (SGA) of a database instance
only in shared server connections?
A. User Global Area
B. Program Global Area
C. SQL Query Result Cache
D. PL/SQL Function Result Cache
Answer: A
QUESTION 277
You want to create a file watcher and an event-based job for detecting the arrival of
files on the local server from various locations.
To achieve this, you enable the raising of file arrival events from remote systems.
Which two conditions must be satisfied to receive file arrival events from a remote
system? (Choose two.)
A. The remote system must have a running Oracle Database instance and a scheduler
agent installed.
B. The initialization parameter REMOTE_OS_AUTHENT must be set to TRUE on
your database.
C. The local database must be set up to run remote external jobs.
D. The remote system's scheduler agent must be registered with your database.
E. Database links to remote databases must be created.
Answer: C D
Explanation
References:
https://docs.oracle.com/cd/E18283_01/server.112/e17120/scheduse005.htm
QUESTION 278
Which two statements are true about Automatic Database Diagnostic Monitor
(ADDM)? (Choose two.)
A. It calls SQL advisors automatically if required.
B. It provides recommendations only for poorly performing SQL statements.
C. Its results are stored in AWR.
D. It runs automatically after each AWR snapshot is created and requires at least two
snapshots for analysis.
E. It requires at least one Automatic Workload Repository (AWR) snapshot for
analysis.
Answer: C E
QUESTION 279
Which two would you recommend to an application developer for reducing locking
conflicts on tables in an Oracle database? (Choose two.)
A. Create objects in locally managed tablespaces with Automatic Segment Space
Management (ASSM) enabled.
B. Avoid coding long-running transactions.
C. Allow the database to handle locks ln default locking mode.
D. Create objects in locally managed tablespaces with manual segment space
management enabled.
E. Enable undo retention guarantee.
Answer: B C
QUESTION 280
Which users are created and can be used for database and host management of your
DBaaS database servers?
A. opc and oracle users
B. root, oracle and cloud users
C. root and oracle users
D. root, opc and oracle users
E. cloud and oracle users
Answer: A
QUESTION 281
Which statement is true about the Oracle central inventory directory (oraInventory)?
A. oraInventory must not be shared by all Oracle software installations on a single system.
B. If ORACLE_BASE is set to /u01/app/oracle for the oracle user during an
installation, OUI creates the Oracle Inventory directory in the /u01/app/oracle/ oraInventory path.
C. lf an OFA-compliant path is not created and the ORACLE_BASE environment
variable is not set during an Oracle Database installation, the Oracle Inventory directory
is placed in the home directory of the user that is performing the installation.
D. Oracle software owners must be members of the same central oraInventory group,
but they need not have this group as their primary group.
Answer: D
Explanation
References https://docs.oracle.com/database/121/CWLIN/usrgrps.htm#CWLIN483
QUESTION 282
You want to create a database with a block size other than the default 8 kilobytes (KB)
by using the Database Configuration Assistant (DBCA).
Which option should you use?
A. Automatic Storage Management (ASM) for storage of data files
B. a file system for storage of data files
C. a Data Warehouse database template
D. a custom database template
Answer: D
QUESTION 283
Identify the access that is initially available to connect to your Database as a Service
(DBaaS) environment.
A. Enterprise Manager on port 1158
B. telnet on port 23
C. Cloud Control on port 7799 D. SSH on port 22
E. SSL/TLS on port 443
Answer: D
QUESTION 284
You executed the following query:
SELECT oldest_flashback_scn, oldest_flashback_time FROM
V$FLASHBACK_DATABASE_LOG;
Considering that all the redo logs are available, what information can you derive from
the output of the preceding query?
A. The time when the last flashback operation in your database was performed
B. The time when the first flashback operation in our database was performed
C. The approximate time and the lowest system change number (SCN) to which you
can flash back your database
D. The system change number (SCN) and the time when the Flashback Database was
enabled in the database instance
Answer: C
QUESTION 285
Which three statements are true about Oracle Data Pump? (Choose three.)
A. Oracle Data Pump export and import operations can be performed to move data
across different database releases.
B. DBMS_DATAPUMP PL/SQL packages can be used independent of Data Pump
clients.
C. A directory object must exist and a user performing an EXPDP or IMPDP
operation must have read and write permission on that directory object.
D. Oracle Data Pump export and import operations can be performed only by users
with the SYSDBA privilege.
E. Oracle Data Pump export operations invoked from the clients that are connected
remotely by using a connection string, create Data Pump files on the client file system.
Answer: A B C
QUESTION 286
Your database has archive logging enabled and RMAN backups are taken at regular
intervals. A data file in the USERS tablespace is damaged.
Which command must you execute before starting the recovery of this tablespace?
A. ALTER TABLESPACE users OFFLINE
B. STARTUP FORCE NOMOUNT
C. STARTUP FORCE
D. SWITCH DATAFILE ALL
Answer: A
QUESTION 287
Your database is in ARCHIVELOG mode and you want to automate the backup
scheduling for your database. Which two tools or utilities would you use to achieve this? (Choose two.)
A. Oracle Enterprise Manager Database Express (EM Express)
B. Oracle Enterprise Manager Cloud Control
C. Database Configuration Assistant (DBCA)
D. Recovery Manager (RMAN) script invoked by using scheduler
Answer: B D
QUESTION 288
In your database, the RESOURCE_LIMIT parameter is set to TRUE.
You create the profile:
Which two statements are true about users
and their sessions that are subject to this profile? (Choose two.)
A. The CPU_PER_CALL is ignored in the user sessions because of the unlimited
value of CPU_PER_CALL
B. These users can never reuse a password
C. The PASSWORD_LIFE_TIME value is ignored because of the unlimited value of
PASSWORD_REUSE_MAX.
D. In each user session, the limit for LOGICAL_READS_PER_SESSION in the same
as defined in the DEFAULT profile.
Answer: C D
QUESTION 289
Your database instance has Automatic Memory Management enabled and supports
shared server connections. Examine the following:
1. Parallel execution messages and control structures
2. Local variables for a process
3. Security and resource usage information
4. Runtime memory values, such as rows retrieved for a SQL statement using a serial
execution plan
5. SQL execution work areas
Which option indicates what is allocated from the large pool in this instance?
A. only 1
B. 1, 2, and 5
C. 1, 2, 3, and 5
D. 1, 2, and 4
Answer: D
QUESTION 290
Which two statements are true about availability audit features after migration to
unified auditing? (Choose two.)
A. The ability of users to audit their own schema objects is not available in the
post-migrated database.
B. Operating system audit trail is available in the post-migrated database.
C. Network auditing is available in the post-migrated database.
D. Mandatory auditing of audit administrative actions is available in the post-migrated
database.
Answer: A D
Explanation
References:
https://docs.oracle.com/database/121/DBSEG/audit_changes.htm#DBSEG341
QUESTION 291
Tape streaming is not happening while performing RMAN tape backup.
On investigation, you find that it is not because of the incremental backup or
the empty file backup and that RMAN is sending data blocks to tape drive fast enough.
What could be a solution to make streaming happen during the backup?
A. Configure backup optimization
B. Configure the channel to increase MAXOPENFILES
C. Configure the channel to increase the capacity with the RATE parameter
D. Configure the channel to adjust the tape buffer size with the BLKSIZE option
Answer: D
QUESTION 292
You are administering a database that supports an OLTP workload.
The default UNDO tablespace is a fixed size tablespace with the RETENTION
NOGUARATNEE clause and undo retention set to 12 minutes.
The user SCOTT queries a large table during peak activity.
The query runs for more than 15 minutes and then SCOTT receives the following
error: ORA-01555: snapshot too old
Which is possible reason for this?
A. The Oracle server is unable to generate a read-consistent image for a block
containing updates.committed after the query began.
B. The query is unable to place data blocks in the UNDO tablespace.
C. The flashback data archive is not enabled for the table on which the query is issued.
D. There is not enough space in Fast Recovery Area.
E. The Oracle server is unable to generate a read-consistent image for a block
containing uncommitted updates.
Answer: A
QUESTION 293
Which background process does Automatic Shared Memory Management use to
coordinate the sizing of memory components?
A. PMON
B. SMON C. MMNL
D. MMAN
E. MMON
Answer: D
QUESTION 294
Your production database PROD uses file system storage. You want to migrate
storage including the Fast Recovery Area for the PROD database to
Oracle Automatic Storage Management (ASM) by using RMAN.
You back up the entire database.
What should the next step be in this migration process?
A. enabling row movement for the database
B. disabling Oracle Flashback Database if enabled
C. opening the database in exclusive mode
D. placing all tablespaces in read-only mode
Answer: B
Explanation
References:
https://docs.oracle.com/cd/E11882_01/server.112/e18951/asm_rman.htm#OSTMG89995
QUESTION 295
One of your databases has archive logging enabled and RMAN backups are taken at
regular intervals. The data file for the USERS tablespace is corrupt.
Which command must you execute before starting the recovery of this tablespace?
A. STARTUP FORCE
B. ALTER TABLESPACE users OFFLINE IMMEDIATE;
C. SWITCH DATAFILE ALL;
D. ALTER TABLESPACE users OFFLINE NORMAL;
E. ALTER TABLESPACE users OFFLINE TEMPORARY;
Answer: E
QUESTION 296
Because of a logical corruption in the EMPLOYES tables, you want to perform
Tablespace Point-in-Time Recovery (TSPITR) to recover the table. Before you
started the TSPITR process, you queried the TS_PITR_CHECK view and you
realized that the table has a referential constraint with DEPARTMENTS
that exists in another tablespace, MASTERTBS.
Which two actions will permit the TSPITR to work? (Choose two.)
A. Taking the MASTERTBS tablespace offline
B. Dropping the relationship between the tables
C. Adding the MASTERTBS tablespace to the recovery set
D. Putting the MASTERTBS tablespace in read-only mode
Answer: B C
Explanation
http://docs.oracle.com/cd/E11882_01/backup.112/e10642/rcmtspit.htm#BRADV9997
8 If constraints for the tables in tablespace tbs1 are contained in the tablespace tbs2,
then you cannot recover tbs1 without also recovering tbs2.
QUESTION 297
One of your databases supports an OLTP workload.
The default UNDO tablespace is fixed size with:
1. RETENTION NOGUARANTEE
2. UNDO_RETENTION is 12 minutes
User SCOTT gets this error after a query on the SALES table has run for more than
15 minutes: ORA-01555: snapshot too old
Which three factors taken separately or in some combination might be the cause?
(Choose three.)
A. An update was made to the SALES table after the query began
B. An update to the SALES table was committed after the query began
C. A committed delete to the SALES table was made more than 12 minutes before the
query began
D. An uncommitted update to the SALES table was made more than 12 minutes
before the query began
E. A committed update to the SALES table was made more than 12 minutes before
the query began
F. An uncommitted delete to the SALES table was made more than 12 minutes before
the query began
G. An update was made to the SALES table before the query began
Answer: A D E
QUESTION 298
You are managing an Oracle Database 12c database. The database is open, and you
plan to perform Recovery Manager (RMAN) backups.
Which three statements are true about these backups? (Choose three.)
A. The backups would be consistent.
B. The backups would be possible only if the database is running in ARCHIVELOG mode.
C. The backups need to be restored and the database has to be recovered in case of a
media failure.
D. The backups would be inconsistent.
E. The backups by default consist of all the data blocks within the chosen files or the
full database.
Answer: B C D
QUESTION 299
Backup requirements for a database:
* Level 0 backup on Sunday
* Cumulative incremental level 1 backup on Monday, Wednesday, and Saturday
* Differential incremental level 1 backup on Tuesday, Thursday, and Friday
Which three statements are true about the strategy? (Choose three.)
A. Level 0 backup on Sunday contains all the blocks that have been formatted.
B. Level 0 backup on Sunday contains all the blocks that have been changed since the
last level 1 backup.
C. Level 1 backup on Tuesday, Thursday, and Friday contains all the blocks that have
been changed since the last level 1 backup.
D. Level 1 backup on Monday, Wednesday, and Saturday contains all the blocks that
have been changed since the last level 0 backup.
E. Level 1 backup on Tuesday, Thursday, and Friday contains all the blocks that have
been changed since the last level 0 backup.
Answer: A C D
QUESTION 300
Examine the command:
SQL> CONNECT hr/hr@orcl
Which two configurations allow this command to execute successfully? (Choose two.)
A. In the tnsnames.ora file, the SERVICE_NAME value of CONNECT_DATA
should be explicitly suffixed with the domain name.
B. The SERVICE_NAMES initialization parameter should contain the name orcl in
the database host.
C. The orcl TNS alias should be defined such that it is resolvable by a client running
on the database host.
D. The orcl TNS alias should be defined in the tnsnames.ora file on both the client
and the database host.
E. The TNS_ADMIN environment variable should be set to orcl on the client.
Answer: B C
QUESTION 301
Automatic Shared Memory Management (ASMM) is enabled for your database
instance. You execute the following command:
SQL> ALTER SYSTEM SET DB_CACHE_SIZE = 100M; Which statement is true?
A. It succeeds and the minimum size for the DEFAULT buffer pool is set to 100M.
B. It fails because DB_CACHE_SIZE is a static initialization parameter.
C. It fails because ASMM is enabled and individual SGA components cannot be sized.
D. It succeeds and the value is changed in the SPFILE immediately, but the change
takes effect only at the next instance startup.
Answer: A
QUESTION 302
Which two statements are true about a server parameter file (SPFILE)? (Choose two.)
A. An SPFILE can be created from a PFILE or from memory.
B. A PFILE can be used to start up a database instance even if an SPFILE exists.
C. An SPFILE must reside in the ORACLE_HOME/dbs directory.
D. An SPFILE can be created only before a database instance is started.
E. An SPFILE contains only those dynamic parameters that can be changed without
having to restart the database instance.
Answer: A B
QUESTION 303
When does a database checkpoint occur?
A. When there is an online redo log switch.
B. When a user session terminates abnormally.
C. When a server process terminates abnormally.
D. When the SHUTDOWN ABORT command is issued.
Answer: A
QUESTION 304
You install Oracle Grid Infrastructure standalone server and issue the following
command:
crsctl start has Which two existing components get automatically added to the Oracle
Restart configuration? (Choose two.)
A. Oracle CSSD services
B. the database whose instance is running
C. Oracle Notification services
D. Oracle Healthcheck services
E. Oracle Net Listener
Answer: A C
QUESTION 305
Your database instance has the following parameter setting:
OS_AUTHENT_PREFIX = OPS$
You execute the following command:
And then grant OPS$GUEST_USER the CREATE SESSION privilege.
Which two statements are true? (Choose two.)
A. GUEST_USER can query the tables created in the USERS tablespace by default.
B. The authentication details for GUEST_USER are stored in the database password file.
C. A local GUEST_USER OS account should exist before GUEST_USER can log on
to the database.
D. GUEST_USER can log on to the database without specifying a username and password.
E. GUEST_USER is forced to change the password at the first login.
Answer: C D
QUESTION 306
Which three statements are true about user account administration? (Choose three.)
A. A user's current session is not affected when the user's profile is changed.
B. Only users with the SYSDBA privilege can change the tablespace quota for other users.
C. A new user account can be created only by SYS or SYSTEM users.
D. A user's quota can be set for any permanent tablespace but not for the default temporary tablespace.
E. A user requires only the CREATE SESSION privilege to change his or her own password.
Answer: A D E
QUESTION 307
Which statement is true about the Database as a Service (DBaaS) instances and
Database instances in Oracle Public Cloud
A. An Oracle database instance can support only one DBaaS instance.
B. A DBaaS instance can support only one Oracle database instance.
C. An Oracle database instance can support multiple DBaaS instances.
D. A DBaaS instance can support multiple Oracle database instances.
E. A DBaaS instance runs in a pluggable database (PDB), which is contained in a
multi-tenant container database (CDB).
Answer: D
QUESTION 308
In your Oracle 12c database, you invoke SQL *Loader Express Mode command to
load data: $> sqlldr hr/hr table=employees
Which two statements are true about this command? (Choose two.)
A. It succeeds and creates the EMPLOYEES table in the HR schema if the table does
not exist.
B. It fails because the SQL *Loader control file location is not specified.
C. It fails because the SQL *Loader data file location is not specified.
D. It succeeds with default settings if the EMPLOYEES table belonging to the HR
schema is already defined in the database.
E. It succeeds even if the HR user does not have the CREATE DIRECTORY privilege.
Answer: D E
QUESTION 309
SMD is a smallfile locally managed tablespace with manual segment space management.
The SH user receives the following error while inserting data into the sales table:
Which three actions can be taken to enable the user to insert data? (Choose three.)
A. altering the data file associated with the SMD tablespace to grow automatically
B. adding a data file to the SMD tablespace, provided the tablespace has not reached
its maximum number of file
C. changing segment space management for the SMD tablespace to automatic
D. resizing the data file associated with the SMD tablespace to make it larger,
provided all data files have not yet reached their maximum size
E. increasing the space quota on the SMD tablespace for the SH user, provided the
files have not yet reached their maximum size
Answer: A B D
QUESTION 310
Your database supports an online transaction processing (OLTP) workload in which
one of the applications creates a temporary table for a session and performs
transactions on it. This consumes a lot of undo tablespace and generates lots of redo.
Which two actions would you take to solve this problem? (Choose two.)
A. Increase the size of the temporary tablespace.
B. Enable Automatic Memory Management (AMM).
C. Enable undo retention guarantee.
D. Enable temporary undo for the database.
E. Increase the size of the redo log buffer.
Answer: A D
QUESTION 311
Which statement is true about using the Database Upgrade Assistant (DBUA) to
upgrade your database from Oracle Database 11g to Oracle Database 12c?
A. It terminates if the SYSTEM tablespace in the source database is not autoextensible.
B. It automatically makes necessary changes to Oracle environment variables.
C. It automatically enables unified auditing in the upgraded database.
D. It automatically adds new data files if there is not enough disk space to grow.
Answer: D
Explanation
References:
https://docs.oracle.com/cd/E18283_01/server.112/e17222/upgrade.htm#insertedID5
QUESTION 312
Which two statements are true about the Database Configuration Assistant (DBCA)?
(Choose two.)
A. It can be used to create a database template from an existing database.
B. It can be used to add a new tablespace.
C. It can generate SQL database creation scripts.
D. It can be used to copy an existing Oracle database to a new host and apply any
patches necessary in the new host.
E. It can configure Automatic Storage Management (ASM) diskgroups.
Answer: A C
Explanation
References:
https://docs.oracle.com/cd/E17559_01/em.111/e16599/appdx_creating_db_templates.
QUESTION 313
Which three statements are true about Database Resource Manager? (Choose three.)
A. A resource plan change can be automated by using the Oracle Scheduler.
B. It can be used to control the consumption of only physical I/Os where excessive
physical I/Os can trigger an automatic session termination but excessive logical I/Os cannot.
C. It can be used to control the usage of the undo tablespace by consumer groups.
D. A resource plan can have multiple resource plan directives, each of which controls
resource allocation for a different consumer group.
E. It can be used to enable resumable timeout for user sessions. F. It can be used to
control the usage of the temp tablespace by consumer groups.
Answer: A C D
QUESTION 314
You determine that database performance is sub-optimal due to hard parsing
statements. Automatic Shared Memory Management (ASMM) is disabled for your database instance.
Which tool would you use to get advice on how to improve performance?
A. Memory Advisor for the PGA
B. SQL Access Advisor
C. Memory Advisor for the shared pool
D. SQL Tuning Advisor
Answer: C
Explanation
References:
http://docs.oracle.com/cd/E25178_01/server.1111/e10897/montune.htm#CHDGFCFJ
QUESTION 315
Which three statements are true about Oracle checkpoint processing? (Choose three.)
A. Frequent thread checkpoints can degrade database performance
B. Database Writer (DBWn) processes write checkpoint information to datafile
headers and the control file
C. It reduces the recovery time from instance failures
D. Incremental checkpoints write some dirty buffers to the datafiles and unwritten
redo to the online redo logs.
E. Thread checkpoints ensure that all dirty buffers are written to data files during a
normal shutdown
Answer: B C E
QUESTION 316
Which two tools can be used to configure static service information in the
listener.ora file? (Choose two.)
A. Oracle Net Manager
B. Oracle Enterprise Manager Cloud Control
C. Oracle Net Configuration Assistant
D. Listener Control Utility (LSNRCTL)
E. Oracle Enterprise Manager Database Express
Answer: A B
QUESTION 317
Which three statements are true about Automatic Workload Repository (AWR)?
(Choose three.)
A. An AWR snapshot shows the SQL statements that are producing the highest load
on the system, based on criteria such as elapsed time and CPU time.
B. AWR data is stored in memory and in a database.
C. All AWR tables belong to the SYSTEM schema.
D. The manageability monitor (MMON) process gathers statistics and creates an
AWR snapshot that is used by the self tuning components in a database.
E. An AWR snapshot contains system-wide tracing and logging information.
Answer: A B D
QUESTION 318
Which three statements are true about the Pre-Upgrade Information Tool?
(Choose three.)
A. It clears all user recycle bins in a database and releases their storage space.
B. It writes a list of invalid SYS and SYSTEM object to the registry$sys_inv_objs table.
C. It evaluates the dependencies of network utility packages.
D. It identifies any deprecated and unsupported parameters.
E. It generates fix-up scripts and automatically runs them to resolve issues that are
flagged in the source database.
Answer: B C D
QUESTION 319
Which task is performed by a background process in a database instance?
A. Connecting between a client process and a dispatcher
B. Executing PL/SQL code
C. Creating dedicated server connections
D. Copying online redo log files to offline storage
Answer: D
QUESTION 320
To enable faster incremental backups, you enabled block change tracking for the
database. Which two statements are true about the block change tracking file? (Choose two.)
A. Multiple change tracking files can be created for a database.
B. The change tracking file must be created after the first level 0 backup.
C. RMAN does not support backup and recovery of the change tracking file.
D. The database clears the change tracking file and starts tracking changes again,
after whole database restore and recovery operations.
Answer: C D
QUESTION 321
As part of a manual upgrade of your database to Oracle Database 12c,
you plan to issue the command: SQL> STARTUP UPGRADE
Which three statements are true about the upgrade process? (Choose three.)
A. All system triggers are disabled during the upgrade process.
B. Only queries on fixed views execute without errors until you run the catctl.pl script.
C. The COMPATIBLE parameter must be set to at least 12.1.0 before issuing the command.
D. All job queues remain active during the upgrade process.
E. Only connections AS SYSDBA are allowed during the upgrade process.
Answer: A D E
QUESTION 322
What action must you take to ensure complete database recovery till the point of failure?
A. Multiplex the control files
B. Duplex the RMAN backup sets.
C. Multiplex the online redo log files.
D. Configure the database to run in ARCHIVELOG mode.
Answer: D
QUESTION 323
Your database is running in ARCHIVELOG mode.
You want to take a consistent whole database backup.
Which two statements are true in this scenario? (Choose two.)
A. RMAN backups contain only data files.
B. The database instance must be shut down to take a user-managed consistent backup.
C. Consistent RMAN backups can be taken while the database is open.
D. User-managed backups only contain formatted data blocks.
E. The database must be in MOUNT state to take consistent RMAN backups.
Answer: C D
QUESTION 324
You are using RMAN to back up your database. All the data files are in read/write mode.
Examine the RMAN configuration parameters:
Which two statements are true about a whole consistent backup of a database running
in ARCHIVELOG mode? (Choose two.)
A. The backup can be used as an incremental level 0 backup.
B. The database instance must be shut down to take the backup.
C. The database must be in MOUNT state to take the backup.
D. The backup consists of blocks that have been formatted.
E. The system Change Number (SCN) is the same for all the data files in the backup.
Answer: B E
QUESTION 325
What is the effect of setting the STATISTICS_LEVEL initialization parameter to BASIC?
A. Optimizer statistics are collected automatically.
B. Only timed operating system (OS) statistics and plan execution statistics are collected.
C. Automatic Workload Repository (AWR) snapshots are not generated automatically.
D. The Oracle server dynamically generates the necessary object-level statistics on
tables as part of query optimization.
Answer: C
Explanation
References:
https://docs.oracle.com/cd/B28359_01/server.111/b28320/initparams240.htm#REFRN10214
QUESTION 326
Examine the parameters:
Users complain that their sessions for certain transactions hang. You investigate and
discover that some users fail to complete their transactions,
causing other transactions to wait on row-level locks.
Which two actions would you take to prevent this problem? (Choose two.)
A. Increase the maximum number of ITL slots for segments on which a blocking user
performs a transaction.
B. Decrease the SESSIONS_PER_USER limit in the profiles assigned to blocking users.
C. Set a limit in the proles of blocking users to control the number of data blocks that
can be accessed in a session.
D. Use Database Resource Manager to automatically kill the sessions that are idle and
are blocking other sessions.
E. Decrease the IDLE_TIME resource limit in the profiles assigned to blocking users.
Answer: B D
QUESTION 327
A user establishes a connection to a database instance by using an Oracle Net.
You want to ensure that:
1. The user account must be locked after five consecutive unsuccessful login attempts.
2. Data read per session must be limited for the user.
3. The user cannot have more than three simultaneous sessions.
4. The user must have a maximum minutes session idle time before being logged off automatically.
Which two would you do to implement this? (Choose two.)
A. by alerting the appropriate user attributes with an ALTER USER command
B. by using appropriate PASSWORD parameters set in the profile assigned to the user
C. by implementing Database Resource Manager and assign it a profile for the user
D. by implementing Database Resource Manager and assign it a role for the user
E. by using appropriate KERNEL parameters set in the profile assigned to the user
Answer: B E
QUESTION 328
Which two categories of segments are analyzed by the Automatic Segment Advisor?
(Choose two.)
A. segments in tablespaces that have exceeded a critical or warning space threshold
B. segments that have the highest growth rate in a database
C. segments that are sparsely populated and have more than 10% of free space below
the high water mark.
D. segments that have unusable indexes
E. segments for tables created using ADVANCED ROW COMPRESSION
Answer: A B
Explanation
References:
http://www.dba-oracle.com/t_segment_advisor_10g.htm
QUESTION 329
Unified auditing is enabled in your database. The HR_ADMIN and OE_ADMIN roles
exist and are granted system privileges. You execute the command:
SQL>CREATE AUDIT POLICY tab1e_aud PRIVILEGES CREATE ANY TABLE,
DROP ANY TABLE ROLES
hr_admin, oe_admin; Which statement is true?
A. It succeeds and needs to be enabled to capture all SQL statements that require
either the specified privileges or any privilege granted to the HR_ADMIN and OE_ADMIN role.
B. It fails because system privileges cannot be granted with roles in the same audit policy.
C. It succeeds and starts capturing only successful SQL statements for all users who
have either the specified privileges or roles granted to them.
D. It fails because the command does not specify when the unified audit policy should be enforced.
Answer: C
QUESTION 330
Identify the persistent configuration setting for the target database that can be set for
the backup by using RMAN. (Choose all that apply.)
A. Backup retention policy
B. Default backup device type
C. Default destinations for backups
D. Multiple backup device types for single backup
E. Default section size for backups
Answer: A B C
Explanation
http://docs.oracle.com/cd/E11882_01/backup.112/e10642/rcmconfb.htm#BRADV89399
QUESTION 331
Examine the following ALTER command:
SQL> ALTER DISKGROUP dgroup1 UNDROP DISKS;
What is the purpose of the command?
A. It cancels all pending disk drops within the disk group
B. It restores disks that are being dropped as the result of a DROP DISKGROUP operation.
C. It mounts disks in the disk group for which the drop-disk operation has already been co pleted
D. It restores all the dropped disks in the disk group for which the drop-disk operation has already been completed
E. It adds previously dropped disks back into the disk group
Answer: A
QUESTION 332
Examine the command to perform a data pump export operation on a source database:
$> expdp hr/hr DIRECTORY=dumpdir DUMPFILE=emp1.dmp VIEWS_AS_TABLE=emp_dept
On the target database, you execute the data pump import command:
$> impdp hr/hr DIRECTORY=dumpdir DUMPFILE=emp1.dmp VIEWS_AS_TABLE=emp_dept
Which three statements are true? (Choose three.)
A. The expdp operation exports data that satisfies the condition of the defining query
used to create the EMP_DEPT view.
B. The impdp operation creates the view and dependent objects.
C. All rows from the dependent objects, along with the metadata required to create the
EMP_DEPT view, are exported.
D. Objects dependent on the EMP_DEPT view are exported.
E. The impdp operation creates EMP_DEPT as table and populates it with the data
from the export dump file.
Answer: A D E
QUESTION 333
You install Oracle Grid Infrastructure for a standalone server.
Which two components are automatically included in the Oracle Restart configuration?
(Choose two.)
A. A pre-existing Oracle Net Listener
B. Oracle Notification services
C. A pre-existing database
D. A pre-existing Oracle management agent
E. Oracle CSSD service
Answer: B E
Explanation
References:
https://docs.oracle.com/database/121/LADBI/oraclerestart.htm#LADBI999
QUESTION 334
You plan to install the Oracle Database 12c software. You want to use Oracle
Automatic Storage Management (ASM)
for storage and Oracle Restart for managing components. Oracle Grid Infrastructure
for a Standalone Server is already installed on the server.
Which three statements must be true for successful installation of the Oracle Database
12c software? (Choose three.)
A. The OSBACKUPDBA, OSDGDBA, and OSKMDBA OS groups must be created.
B. An operating system OSDBA group must be created for users with the SYSDBA
system privilege.
C. The Oracle Database 12c software owner and the Oracle Grid Infrastructure owner
must belong to the same Oracle Inventory Group.
D. The Oracle Database 12c installation must have a separate Oracle inventory directory.
E. An operating system OSOPER group be created for users with the SYSOPER system privilege.
Answer: B C E
QUESTION 335
You want to create a table, DAILY_ORDERS, for an OLTP application, where data
should be compressed during both direct-path INSERT and conventional DML. The
table will also be used for queries. Which compression option should be used?
A. ROW STORE COMPRESS
B. COLUMN STORE COMPRESS FOR QUERY
C. COLUMN STORE COMPRESS FOR ARCHIVE LOW
D. ROW STORE COMPRESS ADVANCED
Answer: D
QUESTION 336
You install “Oracle Grid Infrastructure for a standalone server” on a host on which the
ORCL1 and ORCL2 databases both have their instances running.
Which two statements are true? (Choose two.)
A. All databases subsequently created by using the Database Configuration Assistant
(DBCA) are automatically added to the Oracle Restart configuration.
B. The srvctl add database command must be used to add ORCL1 and ORCL2 to the
ORACLE Restart configuration.
C. Both ORCL1 and ORCL2 are automatically added to the Oracle Restart configuration.
D. All database listeners running from the database home are automatically added to
the Oracle Restart configuration.
E. The crsctl start has command must be used to start software services for Oracle
Automatic Storage Management (ASM) after the “Oracle Grid Infrastructure for a
standalone server” installation is complete.
Answer: A B
QUESTION 337
Examine the details of the uncompressed, non-partitioned heap table CITIES.
Examine the command:
SQL> ALTER TABLE cities SHRINK SPACE COMPACT;
What must you do before executing it?
A. Ensure free space that is approximately equal to the space used by the table should be available.
B. Ensure there are no pending transactions on the table.
C. Enable row movement is enabled.
D. Disable all indexes on the table.
Answer: C
QUESTION 338
Your database is running in NOARCHIVLOG mode. Examine the following parameters:
You want to increase the size of the buffer cache. Free memory is available to
increase the size of the buffer cache. You execute the command:
SQL> ALTER SYSTEM SET DB_CACHE_SIZE=1024M; Which is the outcome?
A. Change is applied to the current instance, but does not persist after instance restart.
B. The value is changed only in the PFILE and takes effect at the next instance startup.
C. The value is changed for the current instance and in the PFILE.
D. It fails because the SCOPE clause is missing.
Answer: A
QUESTION 340
Your database is configured for ARCHIVELOG mode, and a daily full database
backup is taken. RMAN is configured to perform control file autobackup.
In which three scenarios do you need media recovery? (Choose three.)
A. loss of all the copies of the control file
B. loss of all the inactive online redo log group members
C. loss of a data file that belongs to the active undo tablespace
D. loss of data files that belong to the SYSTEM tablespace
E. logical corruption of data that is caused by a wrong transaction
F. abnormal termination of the database instance
Answer: A C D
QUESTION 341
You want to upgrade an Oracle Database running Oracle Database 11g to Oracle
Database 12c. Which three tasks should be performed before a manual upgrade? (Choose three.)
A. running preupgrad.sql in Oracle Database 11g to generate fix-up scripts and a log file
B. running utlu121s.sql from the new Oracle home to display information about the
required initialization parameters
C. copying the initialization parameter file to the new Oracle home
D. copying the password file to the new Oracle home
E. copying net configuration files to the new Oracle home
Answer: A C E
QUESTION 342
Your database has been running with a peak load for the past hour. You want to
preserve the performance statistics collected during this period for comparison
when you analyze the performance of the database later.
What must you do to achieve this?
A. Increase the window size of the moving window baseline so that it equals the
Automatic Workload Repository (AWR) snapshot retention period.
B. Create a baseline on a pair of snapshots that span the peak load period.
C. Generate Active Session History reports for the peak load period.
D. Set the snapshot retention period in AWR to 60 to avoid automatic purging of
snapshots for the past hour.
Answer: B
QUESTION 343
Examine the parameter settings in your local ORCL database:
Examine the parameter settings for the remote SALES database:
As the SYS user, you issue the following command on ORCL:
CREATE PUBLIC DATABASE LINK sales.us.example.com USING ‘sales1’;
The sales1 tnsnames entry points to the sales database instance.
Which two are requirements to ensure that you can successfully connect by using this
database link? (Choose two.)
A. The GLOBAL_NAMES initialization parameter should be set to FALSE in the ORCL database.
B. The SALES1 net service name should be known to both the local and remote databases.
C. Local database users who use this database link should have accounts and the
required privileges in the remote database.
D. The REMOTE_OS_AUTHENT initialization parameter should be set to FALSE in
the remote database.
E. Only the user creating the database link must have an account and the required
privileges in the remote database.
Answer: A C
QUESTION 344
What is pre-requisite to alter a role?
A. You should be granted the DBA role.
B. You should set the OS_ROLES parameter to true.
C. You should be granted the role with the GRANT OPTION.
D. You should have the ALTER ANY ROLE system privilege.
Answer: D
QUESTION 345
When is the UNDO_RETENTION parameter value ignored by a transaction?
A. when there are multiple undo tablespaces available in a database
B. when the data file of the undo tablespace is autoextensible
C. when the undo tablespace is of a fixed size and retention guarantee is not enabled
D. when Flashback Database is enabled
Answer: C
Explanation
References: https://docs.oracle.com/cd/B19306_01/server.102/b14231/undo.htm
(undo retention)
QUESTION 346
The HR user updates the salary of one of the employees in the non-partitioned
EMPLOYEES table, but does not commit the transaction.
Which two types of lock exist in this situation? (Choose two.)
A. exclusive lock on the EMPLOYEES table
B. null lock on the row being updated
C. null lock on the EMPLOYEES table
D. row level lock on the row being updated
E. shared lock on the EMPLOYEES table
Answer: D E
QUESTION 347
Your single-instance Oracle 12c database home currently supports conventional
auditing and uses Automatic Storage Management (ASM). You want to enable
unified auditing by executing the command:
$ make –fins_rdbms.mk uniaud_on ioracle ORACLE_HOME=$ORACLE_HOME
Which two steps should you perform before executing this command? (Choose two.)
A. Ensure that the initialization parameter AUDIT_TRAIL is set to DB.
B. Drop any existing fine-grained audit (FGA) policies.
C. Stop the listener.
D. Shut down the database instance.
E. Disable auditing by setting the initialization parameter AUDIT_TRAIL to NONE.
Answer: C E
Explanation
References: https://blogs.oracle.com/UPGRADE/entry/unified_auditing_is_it_on
QUESTION 348
Which two statements are true about Automatic Storage Management (ASM)?
(Choose two.)
A. It mounts databases and diskgroups to make ASM files available to database instances.
B. It spreads files proportionally across all disks in a diskgroup, aiming to ensure that
all the disks in a diskgroup have the same I/O load.
C. It automatically places each disk from an external redundancy diskgroup in its own failure group.
D. It divides files into extents and allows an extent to span disks.
E. It mirrors data at the allocation unit (AU) level across failure groups within a
normal or high redundancy diskgroup.
Answer: B C
QUESTION 349
Your database is configured in ARCHIVELOG mode, and daily full database backups
are taken. RMAN is configured to perform control file autobackups.
Which statement is true about the loss of a duplexed control file?
A. The database remains open but transactions are not permitted.
B. The database instance aborts, and media recovery is required after restoration of
the control file to open the database.
C. The database instance remains open and the control file can be restored without
shutting down the database.
D. The database instance aborts and a control file restore operation does not require
media recovery.
Answer: C
QUESTION 350
Which two statements describe the relationship between a scheduler window, a
resource manager plan, and a job class?(Choose two.)
A. A scheduler window together with a job class, controls resource allocation for a
job using that job class in that scheduler window.
B. A job class specifies a scheduler window that will be open when that job class
becomes active.
C. A scheduler window specifies a resource manager plan that will be activated when
that scheduler window becomes active.
D. A scheduler window specifies a job class that will be activated when that scheduler
window becomes active.
E. A scheduler window can control resource allocation by itself.
Answer: A C
QUESTION 351
You want to distribute a set of structured data to your customers who can integrate
this data into their existing databases irrespective of the platform.
Which method provides the fastest way of achieving this?
A. using the DBVERIFY utility
B. using direct-path INSERT SQL statements
C. using SQL*Loader
D. using RMAN transportable tablespace operation
Answer: D
QUESTION 352
Which two statements are true about initialization parameter files? (Choose two.)
A. A lost or damaged SPFILE can be re-created by using the parameter values listed
in the alert log.
B. A PFILE must exist for an SPFILE to be created.
C. The ALTER SYSTEM command cannot be used to change the value of any
parameter if a database instance has started using a PFILE.
D. Both the SPFILE and PFILE must always reside on a file system accessible from
the database host server.
E. On startup, by default a database instance always first searches for an SPFILE, and
if it does not find any, searches for a PFILE.
Answer: B E
QUESTION 353
Which three tools or tasks are run by default as part automated maintenance tasks?
(Choose three.)
A. Automatic Database Diagnostic Monitor
B. Optimizer statistics gathering
C. SQL Access Advisor
D. Segment Advisor
E. Automatic SQL Tuning Advisor
Answer: B D E
QUESTION 354
Which statement is true about unified auditing?
A. The unified audit trail, by default, resides in a read-only table in the AUDSYS
schema in the SYSAUX tablespace.
B. Only the CREATE, ALTER, and DROP statements are audited for all users, including SYS.
C. Unified auditing is enabled only if the AUDIT_TRAIL parameter is set to NONE.
D. The unified audit trail contains audit records only from unified audit policies and AUDIT settings.
Answer: A
Explanation
References:
https://docs.oracle.com/database/121/DBSEG/audit_admin.htm#DBSEG370
QUESTION 355
Which two statements are true about resumable space allocation? (Choose two.)
A. A database-level LOGON trigger can be used to automatically configure
resumable statement settings for individual sessions.
B. SELECT statements that run out of temporary space for sort areas are candidates
for resumable execution.
C. A resumable statement can be suspended and resumed only once during a session.
D. Resumable space allocation does not apply when a database instance uses
asynchronous commit.
E. Resumable space allocation does not apply when users exceed their assigned space quota in a tablespace.
F. Free space in a segment is automatically reclaimed when a resumable statement is
suspended because of an out-of space condition.
Answer: A B
QUESTION 356
Which two options can be configured for an existing database by using the Database
Configuration Assistant (DBCA)? (Choose two.)
A. Configure Label Security
B. Database Vault in ORACLE_HOME
C. Oracle Suggested Backup Strategy
D. Database Resident Connection Pooling
E. Nondefault blocksize tablespaces
Answer: A B
QUESTION 357
Your database is in NOARCHIVELOG mode. You want to enable archiving for the
database. Examine the steps:
1. Execute the ALTER DATABASE ARCHIVELOG command.
2. Execute SHUTDOWN IMMEDIATE.
3. Execute STARTUP MOUNT.
4. Set the DB_RECOVERY_FILE_DEST parameter to $ORACLE_HOME/dbs/.
5. Execute STARTUP NOMOUNT.
6. Open the database.
Identify the required steps in the correct sequence.
A. 4, 2, 5, 1, 6
B. 1, 2, 3, 4, 6
C. 2, 3, 1, 6
D. 2, 5, 1, 6
Answer: C
QUESTION 358
Your database is open in read/write mode and multiple users are connected to the
database instance. You execute the following command:
SQL> ALTER SYSTEM ENABLE RESTRICTED SESSION;
What would be the effect on current sessions?
A. They are not terminated but may only issue queries.
B. They are not affected.
C. They are terminated immediately.
D. They are terminated after completing the transaction.
Answer: B
QUESTION 359
Which statement is true about the loss of a data file belonging to the default undo tablespace?
A. The database remains open in read-only mode.
B. The database is put in MOUNT state and requires recovery to be opened.
C. The database remains open for querying but no DML statements can be executed
except by the users with SYSDBA privilege.
D. All the noncommitted transactions are lost.
E. The database instance aborts.
Answer: C
QUESTION 360
Which statement is true about redo log files during instance recovery?
A. All current, online, and archived redo logs are required to complete instance recovery.
B. All redo log entries in the current and active logs are applied to data files to
reconstruct changes made after the most recent checkpoint.
C. All redo log entries in the current log are applied to data files until the checkpoint
position is reached.
D. All current, active, and inactive redo logs are required to complete instance recovery.
Answer: C
Explanation
References https://docs.oracle.com/cd/A58617_01/server.804/a58396/ch2.htm
QUESTION 361
You configured the flash recovery area in the database. Which two files would you
expect to find in the flash recovery area? (Choose two.)
A. backup pieces
B. copies of all parameter files
C. trace file generated using BACKUP CONTROLFILE TO TRACE
D. control file autobackups
Answer: A D
QUESTION 362
Examine the command:
SQL> ALTER SYSTEM SET ENABLE_DDL_LOGGING=TRUE;
Which two statements are true in this scenario? (Choose two.)
A. All data definition language (DDL) commands are logged in to the alert log file.
B. All DDL commands are logged in to a text file in Automatic Diagnostic Repository (ADR) home.
C. A subset of executed DDL statements is written into an XML file in ADR home.
D. A subset of executed DDL statements is written to the DDL log in ADR home.
E. All DDL commands are logged in to a trace file in ADR home.
Answer: C D
QUESTION 363
The database instance has the following parameter setting:
OS_AUTHENT_PREFIX = OPS$
OS_ROLES = FALSE
REMOTE_OS_AUTHENT = FALSE
REMOTE_OS_ROLES = FALSE
TIMED_OS_STATISTICS = 0
You have a local operating system user SKD. You create a database user OPS$SKD,
and then assign external authentication. The user OPS$SKD has the CREATE
SESSION privilege. What would you achieve by the above process?
A. The database user OPS$SKD will be able to administer the database.
B. The authentication detail for the database user OPS$SKD is recorded in the password file.
C. The local operating system user SKD will be able to access the database instance
without specifying the username and password.
D. The database user OPS$SKD has to login with the password of the local operating
system user SKD to access the database instance.
Answer: C
QUESTION 364
View the Exhibit and examine the privileges granted to the MGR_ROLE role.
The user SKD has been granted the CONNECT and RESOURCE roles only.
The database administrator (DBA) grants MGR_ROLE to the user SKD by executing the command:
SQL> GRANT MGR_ROLE TO SKD WITH ADMIN OPTION;
Which statement is true about the user SKD after he/she is granted this role?
A. The user SKD can grant only the MGR_ROLE role to other users, but not the privileges in it.
B. The user SKD can revoke the MGR_ROLE only from the users for whom he/she is the grantor.
C. The user SKD can grant the privileges in the MGR_ROLE role to other users,
but not with ADMIN OPTION.
D. The user SKD can grant the privileges in the MGR_ROLE role to other users, but
cannot revoke privileges from them.
Answer: A
QUESTION 365
The user HR owns the EMP table. The user HR grants privileges to the user SCOTT
by using this command:
SQL> GRANT SELECT,INSERT,UPDATE ON emp TO scott WITH GRANT OPTION;
The user SCOTT executes this command to grant privileges to the user JIM:
SQL> GRANT SELECT,INSERT,UPDATE ON hr.emp TO jim;
Now, the user HR decides to revoke privileges from JIM using this command:
SQL> REVOKE SELECT,INSERT,UPDATE ON emp FROM jim;
Which statement is true after HR issues the REVOKE command?
A. The command fails because SCOTT still has privileges.
B. The command succeeds and privileges are revoked from JIM.
C. The command fails because HR cannot revoke the privileges from JIM.
D. The command succeeds and only HR has the privilege to perform the SELECT,
INSERT, and UPDATE operations on the EMP table.
Answer: C
QUESTION 366
Examine the following steps performed on a database instance:
1: The DBA grants the CREATE TABLE system privilege to the SKD user with ADMIN OPTION.
2: The SKD user creates a table.
3: The SKD user grants the CREATE TABLE system privilege to the HR user.
4: The HR user creates a table.
5: The DBA revokes the CREATE TABLE system privilege from SKD.
Which statement is true after step 5 is performed?
A. The table created by SKD is not accessible and SKD cannot create new tables.
B. The tables created by SKD and HR remain, but both cannot create new tables.
C. The table created by HR remains and HR still has the CREATE TABLE system privilege.
D. The table created by HR remains and HR can grant the CREATE TABLE system
privilege to other users.
Answer: C
QUESTION 367
Examine the commands executed in the following sequence:
1: SQL> CREATE ROLE mgrrole;
2: SQL> GRANT create user,select any table,connect,resource TO mgrrole;
3: SQL> GRANT select,update ON sh.sales TO mgrrole;
4: SQL> CREATE ROLE ceo IDENTIFIED BY boss;
5: SQL> GRANT mgrrole,drop any table,create any directory TO ceo;
6: SQL> GRANT ceo TO mgrrole;
Which statement is true about the above commands?
A. The commands execute successfully.
B. Command 6 produces an error because of circular role grant.
C. Command 5 produces an error because a role cannot be granted to another role.
D. Command 3 produces an error because the MGRROLE role already contains system
privileges. The table created by HR remains and HR still has the CREATE TABLE
system privilege.
E. The table created by HR remains and HR can grant the CREATE TABLE system
privilege to other users.
Answer: B
QUESTION 368
You want to create a role to meet these requirements:
1: The role is to be protected from unauthorized usage.
2: The password of the role is not to be embedded in the application source code or
stored in a table.
Which method would you use to restrict enabling of such roles?
A. Create the role with external authentication.
B. Create the role as a secure application role.
C. Create the role as a password-protected role.
D. Create a role and use FineGrained Access Control (FGAC) to secure the role.
Answer: B
QUESTION 369
View the Exhibit and examine the user information. The user has been granted
CONNECT and RESOURCE roles and no individual system privileges.
The SL_REP user executes this command to create a table:
SQL> CREATE TABLE orders(oid number(6),
odate date,
ccode number(4),
oamt number(10,2)) TABLESPACE purchase_space;
The PURCHASE_SPACE tablespace already exists in the database.
Which statement describes the effect of the command?
A. The command executes successfully and creates the table in the USERS tablespace.
B. The command executes successfully and creates the table in the PURCHASE_SPACE tablespace.
C. The command produces an error because the user does not have the privilege to create the table.
D. The command produces an error because the user does not have quota in the PURCHASE_SPACE tablespace.
Answer: B
QUESTION 370
View the Exhibit to observe the roles assigned to the SLP_REP user. Which statement
is true about the assignment of the SELECT_CATALOG_ROLE role to the SLP_REP user?
A. The user must enable the role explicitly.
B. The user can grant the role to other users.
C. The user cannot use the role until the DBA enables it explicitly.
D. The user can start using the role immediately without any changes.
Answer: A
QUESTION 371
In your database instance, the user sessions are connected to the database server from
the remote machines. You want to achieve the following for these users:
1: The user account must be locked after four unsuccessful login attempts.
2: The user must be prompted to change the password at regular intervals.
3: The user may not have more than three simultaneous sessions.
4: The user session must automatically be logged off if more than 10 minutes elapsed time used.
How would you accomplish the above?
A. by assigning profiles for the users
B. by implementing FineGrained Auditing (FGA)
C. by granting a secure application role to the users
D. by implementing the Database Resource Manager plan
Answer: A
QUESTION 372
You created a profile APP_USER and assigned it to the users. After a month, you decide to drop the profile.
Some user sessions are currently connected to the database instance and are using the
APP_USER profile. This command is used to drop the profile:
SQL> DROP PROFILE app_user;
Which statement describes the result?
A. The command produces an error.
B. The profile is dropped and current user sessions use the DEFAULT profile immediately.
C. The profile is dropped and only the subsequent user sessions use the DEFAULT profile.
D. The profile is dropped, the sessions are terminated, and the subsequent user
sessions use the DEFAULT profile.
Answer: A
QUESTION 373
You want to access employee details contained in flat files as part of the EMPLOYEE
table. You plan to add a new column to the EMPLOYEE table to achieve this.
Which data type would you use for the new column?
A. CLOB
B. BLOB
C. BFILE
D. LONG RAW
Answer: C
