RMAN REPAIR FAILURE

RMAN REPAIR FAILURE command is used to repair database failures identified by the Data Recovery Advisor.

The recommended workflow is to run LIST FAILURE to display failures, ADVISE FAILURE to display repair options, and RMAN REPAIR FAILURE to fix the failures.

Repairing Failures

This example repairs all failures known to the Data Recovery Advisor. The example repairs two failures: missing data files and a data file with corrupt blocks. After the recovery, RMAN asks whether it should open the database (user-entered text is in bold).

RMAN> LIST FAILURE;
 
List of Database Failures
=========================
 
Failure ID Priority Status    Time Detected Summary
---------- -------- --------- ------------- -------
142        HIGH     OPEN      23-APR-13     One or more non-system datafiles are missing
101        HIGH     OPEN      23-APR-13     Datafile 1: '/disk1/oradata/prod/system01.dbf' 
                                            contains one or more corrupt blocks
 
RMAN> ADVISE FAILURE;
 
List of Database Failures
=========================
 
Failure ID Priority Status    Time Detected Summary
---------- -------- --------- ------------- -------
142        HIGH     OPEN      23-APR-13     One or more non-system datafiles 
                                            are missing
101        HIGH     OPEN      23-APR-13     Datafile 1: '/disk1/oradata/prod/system01.dbf' 
                                            contains one or more corrupt blocks
 
analyzing automatic repair options; this may take some time
using channel ORA_DISK_1
analyzing automatic repair options complete
 
Mandatory Manual Actions
========================
no manual actions available
 
Optional Manual Actions
=======================
1. If file /disk1/oradata/prod/users01.dbf was unintentionally renamed or moved, restore it
 
Automated Repair Options
========================
Option Repair Description
------ ------------------
1      Restore and recover datafile 28; Perform block media recovery of 
       block 56416 in file 1
  Strategy: The repair includes complete media recovery with no data loss
  Repair script: /disk1/oracle/log/diag/rdbms/prod/prod/hm/reco_660500184.hm

RMAN> REPAIR FAILURE;
 
Strategy: The repair includes complete media recovery with no data loss
Repair script: /disk1/oracle/log/diag/rdbms/prod/prod/hm/reco_475549922.hm
contents of repair script:
   # restore and recover datafile
   alter database datafile 28 offline;
   restore datafile 28;
   recover datafile 28;
   alter database datafile 28 online;
   # block media recovery
   recover datafile 1 block 56416;
 
Do you really want to execute the above repair (enter YES or NO)? YES
executing repair script
 
sql statement: alter database datafile 28 offline
 
Starting restore at 23-APR-13
using channel ORA_DISK_1
 
channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00028 to /disk1/oradata/prod/users01.dbf
channel ORA_DISK_1: reading from backup piece /disk2/PROD/backupset/2013_04_18/o1_mf_nnndf_TAG20130418T182042_32fjzd3z_.bkp
channel ORA_DISK_1: piece handle=/disk2/PROD/backupset/2013_04_18/o1_mf_nnndf_TAG20130418T182042_32fjzd3z_.bkp tag=TAG20130418T182042
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:03
Finished restore at 23-APR-13
 
Starting recover at 23-APR-13
using channel ORA_DISK_1
 
starting media recovery
media recovery complete, elapsed time: 00:00:01
 
Finished recover at 23-APR-13
 
sql statement: alter database datafile 28 online
 
Starting recover at 23-APR-13
using channel ORA_DISK_1
searching flashback logs for block images until SCN 429690
finished flashback log search, restored 1 blocks
 
starting media recovery
media recovery complete, elapsed time: 00:00:03
 
Finished recover at 23-APR-13
repair failure complete

Previewing a Repair

The following example previews a repair of the first repair option of the most recent ADVISE FAILURE command in the current session. The sample output for the LIST FAILURE and ADVISE FAILURE commands is not shown in the example.

RMAN> LIST FAILURE;
.
.
.
RMAN> ADVISE FAILURE;
.
.
.
RMAN> REPAIR FAILURE PREVIEW;

Strategy: The repair includes complete media recovery with no data loss
Repair script: /disk1/oracle/log/diag/rdbms/prod/prod/hm/reco_3200987003.hm

contents of repair script:
   # block media recovery
   recover datafile 1 block 56416;

You can use SPOOL with REPAIR FAILURE ... PREVIEW to write a repair script to a file. You can then edit this script and execute it manually. The following example spools a log a repair preview to /tmp/repaircmd.dat.

RMAN> SPOOL LOG TO '/tmp/repaircmd.dat';
RMAN> REPAIR FAILURE PREVIEW;
RMAN> SPOOL LOG OFF;

Also See:

Oracle RMAN