ORA-01157错误,丢失undo tablespace中数据文件的解决方法

我们先来看一下这个现象:

[oracle@djp ora12]$ pwd
/u01/app/oracle/oradata/ora12
[oracle@djp ora12]$ mv undotbs01.dbf undotbs01.dbfbak
这里,我们把unto表空间对应的数据文件作了一个更改,表面该文件已经丢失。
 
下面,我们使用SQL*Plus,进行对数据库的启动:
idle> conn / as sysdba
Connected to an idle instance.
idle> startup mount;
ORACLE instance started.
 
Total System Global Area  835104768 bytes
Fixed Size                  2293880 bytes
Variable Size             469766024 bytes
Database Buffers          356515840 bytes
Redo Buffers                6529024 bytes
Database mounted.
idle> alter database open;
alter database open
*
ERROR at line 1:
ORA-01157: cannot identify/lock data file 3 - see DBWR trace file
ORA-01110: data file 3: '/u01/app/oracle/oradata/ora12/undotbs01.dbf'
 
 
idle>
这时,发现启动失败。对于该现象, 我们可以进行如下的处理:
(1)设置undo_management为auto,由自动(auto)设置为手动(manual)。这因为,当设置为auto时,系统采用undo表空间管理回滚段,当设置manual时,系统使用回滚段。这里,相当于是禁用undo tablespace。
idle> alter system set undo_management = manual scope=spfile;
 
System altered.
 
idle>
(2)再次启动数据库,使用其生效
idle> shutdown immediate;
ORA-01109: database not open
 
 
Database dismounted.
ORACLE instance shut down.
idle> startup;
ORACLE instance started.
 
Total System Global Area  835104768 bytes
Fixed Size                  2293880 bytes
Variable Size             444600200 bytes
Database Buffers          381681664 bytes
Redo Buffers                6529024 bytes
Database mounted.
ORA-01157: cannot identify/lock data file 3 - see DBWR trace file
ORA-01110: data file 3: '/u01/app/oracle/oradata/ora12/undotbs01.dbf'
 
 
idle>
(3)对丢失的数据库文件进行一个离线删除,如下:
idle> alter database datafile '/u01/app/oracle/oradata/ora12/undotbs01.dbf'
  2  offline drop
  3  /
 
Database altered.
 
idle>
(4)打开数据库,并对undo tablespace重新创建。
idle> alter database open;
 
Database altered.
 
idle> drop tablespace undotbs
  2  /
 
Tablespace dropped.
 
idle> create undo tablespace undotbs
  2  datafile '/u01/app/oracle/oradata/ora12/undotbs01.dbf'
  3  size 100M
  4  autoextend on
  5  next 50M
  6  maxsize unlimited
  7  /
 
Tablespace created.
 
idle>
(5)再次设置undo_management为auto,并重启数据库:
idle> alter system set undo_management = auto scope=spfile
  2  /
 
System altered.
 
idle> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
idle> startup;
ORACLE instance started.
 
Total System Global Area  835104768 bytes
Fixed Size                  2293880 bytes
Variable Size             469766024 bytes
Database Buffers          356515840 bytes
Redo Buffers                6529024 bytes
Database mounted.
Database opened.
idle> desc dba_objects;
 Name                                      Null?    Type
 ----------------------------------------- -------- ----------------------------
 OWNER                                              VARCHAR2(128)
 OBJECT_NAME                                        VARCHAR2(128)
 SUBOBJECT_NAME                                     VARCHAR2(128)
 OBJECT_ID                                          NUMBER
 DATA_OBJECT_ID                                     NUMBER
 OBJECT_TYPE                                        VARCHAR2(23)
 CREATED                                            DATE
 LAST_DDL_TIME                                      DATE
 TIMESTAMP                                          VARCHAR2(19)
 STATUS                                             VARCHAR2(7)
 TEMPORARY                                          VARCHAR2(1)
 GENERATED                                          VARCHAR2(1)
 SECONDARY                                          VARCHAR2(1)
 NAMESPACE                                          NUMBER
 EDITION_NAME                                       VARCHAR2(128)
 SHARING                                            VARCHAR2(13)
 EDITIONABLE                                        VARCHAR2(1)
 ORACLE_MAINTAINED                                  VARCHAR2(1)
 
idle>
到此,该问题成功解决。
posted @ 2016-11-18 16:40  李清欣  阅读(626)  评论(0编辑  收藏  举报