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RMAN Crosscheck

posted Mar 18, 2011, 9:26 AM by Sachchida Ojha   [ updated Mar 18, 2011, 9:28 AM ]
Check whether backup pieces, proxy copies, or disk copies still exist in comparison to the control file's repository.

Syntax:

  CROSSCHECK
    {
      { BACKUP [OF listObjList]
      | COPY [OF listObjList]
      | archivelogRecordSpecifier
      } [maintQualifier [maintQualifier]...]
    | recordSpec [DEVICE TYPE deviceSpecifier [, deviceSpecifier]...]
    };

   listObjList::=
      [ DATAFILE datafileSpec [, datafileSpec]...
      | TABLESPACE ['] tablespace_name ['] [, ['] tablespace_name [']]...
      | archivelogRecordSpecifier
      | DATABASE [SKIP TABLESPACE ['] tablespace_name [']
           [, ['] tablespace_name [']]...]
      | CONTROLFILE
      | SPFILE
      ]...

   recordSpec::=
      { { BACKUPPIECE | PROXY }
        { 'media_handle' [, 'media_handle']...
        | primary_key [, primary_key]...
        | TAG [=] ['] tag_name [']
        }
      | BACKUPSET primary_key [, primary_key]...
      | { CONTROLFILECOPY | DATAFILECOPY }
        { { primary_key [, primary_key]...
          | 'filename' [, 'filename']...
          }
        | TAG [=] ['] tag_name ['] [, ['] tag_name [']]...
        }
      | ARCHIVELOG
        { primary_key [, primary_key]...
        | 'filename' [, 'filename']...
        }
      }

Use RMAN Crosscheck to check that files are in place ready for a restore.
To validate a restore has worked, use the RMAN restore validate command.

Examples:

Assuming you have configured automatic channels:

RMAN> CROSSCHECK BACKUP;
RMAN> CROSSCHECK COPY;
RMAN> CROSSCHECK backup of database;
RMAN> CROSSCHECK backup of controlfile;
RMAN> CROSSCHECK archivelog all;

Query the media manager for the status of backup sets in a given date range:

RMAN> ALLOCATE CHANNEL FOR MAINTENANCE DEVICE TYPE sbt;
RMAN> CROSSCHECK BACKUP DEVICE TYPE sbt COMPLETED BETWEEN '01-AUG-04' AND '31-DEC-04';

"Wealth heaped on wealth, nor truth nor safety buys,
The dangers gather as the treasures rise" - Samuel Johnson: The Vanity Of Human Wishes

Related Commands:

RMAN Restore Validate
RMAN CHANGE - Update the status of a backup in the RMAN repository.
RMAN CONFIGURE - Persistent RMAN settings.
RMAN DELETE - Delete backups from disk or tape
RMAN LIST - List backups and copies
RMAN REPORT - Report backup status: database, files, backups
NLS_DATE_FORMAT parameter

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