Case 3: Oracle Dictionary Corrupted, DB can not be open
DBA of company D deleted SYS.TS$ (A bootstrap Table) by mistake, this cause Oracle DB can not be open
| Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 – 64bit ProductionWith the Partitioning, Automatic Storage Management, OLAP, Data Miningand Real Application Testing optionsINSTANCE_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
|
In this circumstance, data dictionary had been damaged; therefore it would be very hard to open the database.
Then, we can use PRM-DUL rescue data in DB. Following processes as below:
- Recovery Wizard
- Select Data Dictionary Mode
- Choose Big or Little Endian , and input DB NAME
- Click Load for database loading
- Extract Tables
