ORACLE数据字典受损导致数据库无法打开的恢复 PRM-DUL

D 公司的DBA由于误操作删除了TS$数据字典基表导致数据库无法启动

 

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 – 64bit Production

With the Partitioning, Automatic Storage Management, OLAP, Data Mining

and Real Application Testing options

 

 

INSTANCE_NAME

—————-

ASMME

 

SQL>

SQL>

SQL> select count(*) from sys.ts$;

 

COUNT(*)

———-

5

 

SQL> delete ts$;

 

5 rows deleted.

 

SQL> commit;

 

Commit complete.

 

SQL> shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

 

Database mounted.

ORA-01092: ORACLE instance terminated. Disconnection forced

ORA-01405: fetched column value is NULL

Process ID: 5270

Session ID: 10 Serial number: 3

 

Undo initialization errored: err:1405 serial:0 start:3126020954 end:3126020954 diff:0 (0 seconds)

Errors in file /s01/diag/rdbms/asmme/ASMME/trace/ASMME_ora_5270.trc:

ORA-01405: fetched column value is NULL

Errors in file /s01/diag/rdbms/asmme/ASMME/trace/ASMME_ora_5270.trc:

ORA-01405: fetched column value is NULL

Error 1405 happened during db open, shutting down database

USER (ospid: 5270): terminating the instance due to error 1405

Instance terminated by USER, pid = 5270

ORA-1092 signalled during: ALTER DATABASE OPEN…

opiodr aborting process unknown ospid (5270) as a result of ORA-1092

 

 

 

此场景中由于数据字典已经损坏,所以想要正常打开数据库是十分困难的。

 

此时则可以使用PRM来抽取数据库中的数据。具体步骤与场景1中的相似,用户仅仅需要输入该数据库的所有数据文件即可,其简要步骤如下:

 

 

  1. Recovery Wizard
  2. 选择字典模式 Dictionary Mode
  3. 合理选择Big或者Little Endian
  4. 加入数据文件并点击Load
  5. 根据实际需求恢复表中的数据

 

 

prm-dul-corrupted-dictionary-systemdbf

 

 

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