Oracle AWRDD报告生成和性能分析
我写的SQL调优专栏:https://blog.csdn.net/u014427391/article/category/8679315
对于局部的,比如某个页面列表sql,我们可以使用Oracle的执行计划进行sql调优,但是对于整个系统来说,你可以知道哪些sql比较耗时?当然可以通过查Oracle的共享池得到,不过Oracle系统本身就提供了几种性能分析报告,比如AWR、ASH、ADDM、AWRDD等等报告,本博客介绍一下AWRDD性能分析报告
AWRDD报告是Oracle针对不同时段的性能的一个比对报告
一、ADDM报告生成
继之前AWR、ASH方面的博客之后,https://smilenicky.blog.csdn.net/article/details/89414432,https://smilenicky.blog.csdn.net/article/details/89419185,我再写一篇ADDM方面的博客:
1.1 工具选择
对于Oracle数据库可以使用sqlplus或者plsql developer客户端软件
sqlplus 使用
可以使用sqlplus工具登录
进入数据库
sqlplus / as sysdba
查看用户
show parameter db_name
用登录之后才可以使用
plsql developer使用
plsql developer也可以使用,登录之后,选择文件(File)->新建(New)->命令窗口(Command Window)
1.2 自动创建快照
开始压测后执行
exec DBMS_WORKLOAD_REPOSITORY.CREATE_SNAPSHOT ();
可以通过dba_hist_wr_control查看当前的配置情况,当前awr为每1小时做一次数据快照,保留时间为8天。
select * from dba_hist_wr_control;
修改配置,每隔30分钟收集一次,保存1天
execute dbms_workload_repository.modify_snapshot_settings(interval=>30,retention=>14000);
关闭自动收集
SQL>exec dbms_workload_repository.modify_snapshot_settings (interval=>0,retention=>24*60);
1.3 手工创建快照
除了自动创建快照,也可以手工创建快照
select dbms_workload_repository.create_snapshot() from dual;
1.4 AWRDD报告生成
对于sqlplus客户端的可以使用
@?/rdbms/admin/awrddrpt.sql
对于plsql客户端,我用绝对路径去执行,@?的命令找不到文件
这个要根据自己的Oracle安装路径去修改,例如:
@D:/oracle/product/11.1.0/db_1/RDBMS/ADMIN/awrddrpt.sql
(1)快照报告格式
Enter value for report_type:html
有两种格式html和txt,这里选择html
(2)快照搜集天数
Enter value for num_days:1
快速搜集的天数,这里可以填个数字
(3)快照开始id1
Enter value for begin_snap:449
要根据日志打印的快照id范围来填,所以我可以填写:449
(4)快照结束id1
Enter value for end_snap:451
要根据日志打印的快照id范围来填,所以我可以填写:451
(5)快照收集天数2
Enter value for num_days2:1
快照收集天数,这里也可以填个数字,主要是来对比
(6)快速开始id2
Enter value for begin_snap2:450
也要在日志打印的范围内取:这里取450
(7)快照结束id2
Enter value for end_snap2:452
也要在日志打印的范围内取:这里取452
(8)AWRDD报告名称
Enter value for report_name
填写ADDM报告的名称,我可以填写awrdd_20190421.html,然后在打印的日志里有文件保存的路径:,比如:D:\oracle\product\11.2.0\dbhome_1\RDBMS\ADMIN\awrddm.html
SQL> @D:/oracle/product/11.2.0/dbhome_1/RDBMS/ADMIN/awrddrpt.sql
Current Instance
~~~~~~~~~~~~~~~~
DBID DBID2 DB_NAME INST_ INST_ INST_NAME
---------- ---------- ------------ ----- ----- ------------
1525762377 1525762377 ORCL 1 1 orcl
rpt_options
---------
0
Specify the Report Type
~~~~~~~~~~~~~~~~~~~~~~~
Would you like an HTML report, or a plain text report?
Enter 'html' for an HTML report, or 'text' for plain text
Defaults to 'html'
Type Specified: html
Cannot SET TRIMSPOOL
Cannot SET UNDERLINE
Instances in this Workload Repository schema
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
DBBID INSTT DBB_NAME INSTT_NAME HOST
------------ ----- ------------ ------------ ------------
* 1525762377 1 ORCL orcl PC-201508171
906
Database Id and Instance Number for the First Pair of Snapshots
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Using 1525762377 for Database Id for the first pair of snapshots
Using 1 for Instance Number for the first pair of snapshots
dbid
---------
1525762377
inst_num
---------
1
inst_num
---------
1
dbid
---------
1525762377
max_snap_time
---------
21/04/2019
Specify the number of days of snapshots to choose from
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Entering the number of days (n) will result in the most recent
(n) days of snapshots being listed. Pressing <return> without
specifying a number lists all completed snapshots.
Listing the last day's Completed Snapshots
INST_NAME DB_NAME SNAP_ID SNAPDAT LV
------------ ------------ -------- ------------------ --
orcl ORCL 448 21 Apr 2019 10:38 1
orcl ORCL 449 21 Apr 2019 12:00 1
orcl ORCL 450 21 Apr 2019 13:00 1
orcl ORCL 451 21 Apr 2019 14:00 1
orcl ORCL 452 21 Apr 2019 15:00 1
dbid
---------
1525762377
inst_num
---------
1
dbid
---------
1525762377
bid
---------
449
eid
---------
451
Specify the number of days of snapshots to choose from
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Entering the number of days (n) will result in the most recent
(n) days of snapshots being listed. Pressing <return> without
specifying a number lists all completed snapshots.
Listing the last day's Completed Snapshots
INST_NAME DB_NAME SNAP_ID SNAPDAT LV
------------ ------------ -------- ------------------ --
orcl ORCL 448 21 Apr 2019 10:38 1
orcl ORCL 449 21 Apr 2019 12:00 1
orcl ORCL 450 21 Apr 2019 13:00 1
orcl ORCL 451 21 Apr 2019 14:00 1
orcl ORCL 452 21 Apr 2019 15:00 1
dbid2
---------
1525762377
inst_num2
---------
1
max_snap_time
---------
21/04/2019
inst_num2
---------
1
dbid2
---------
1525762377
max_snap_time
---------
21/04/2019
Specify the Second Pair of Begin and End Snapshot Ids
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Second Begin Snapshot Id specified: 450
Second End Snapshot Id specified: 452
bid2
---------
450
eid2
---------
452
inst_num2
---------
1
dbid2
---------
1525762377
bid2
---------
450
eid2
---------
452
Specify the Report Name
~~~~~~~~~~~~~~~~~~~~~~~
The default report file name is awrdiff_1_449_1_450.html To use this name,
press <return> to continue, otherwise enter an alternative.
Using the report name awrdd.html
Started spooling to D:\oracle\product\11.2.0\dbhome_1\RDBMS\ADMIN\awrdd.html
二、AWRDD报告性能分析
AWRDD的报告分析和AWR有些是类似的,不过都是不同时期的
(1) AWRDD之不同时期的load profile
(2) AWRDD之不同时期的等待事件
(3) AWRDD不同时期的TOP SQL对比