Backing Up Oracle - Computing at Cornell

11.3.3 Crosscheck utility
To list backups of archive logs between SCN 633200 until SCN 633300:
RMAN> list backup of archivelog from scn 633200 until scn 633300;
RMAN-03022: compiling command: list
List of Backup Sets
Key Recid Stamp LV Set Stamp Set Count Completion Time
------- ---------- ---------- -- ---------- ---------- ----------------------
3206 29 426005887 0 426005876 35 02-APR-01
List of Backup Pieces
Key Pc# Cp# Status Completion Time Piece Name
------- --- --- ----------- ---------------------- ------------------------
3208 1 1 AVAILABLE 02-APR-01 BEACH/LOGS/426005876/35/1
List of Archived Logs Included
Thrd Seq Low SCN Next SCN Low Time Next Time
---- ------- ---------- ---------- --------------- ---------------
1 54 633190 633209 02-APR-01 02-APR-01
The crosscheck utility verifies whether backups still exist on disk or TSM.
RMAN does not delete backup entries that it could not find, but instead marks
them as expired. If the backup was erroneously marked expired because for
example, TSM was unavailable or misconfigured, crosscheck will mark it
available the next time it is run if the backup still exists.
Like the list utility discussed in Section 11.3.2.3, “List backup of certain
objects” on page 182, you can crosscheck certain objects. See the Oracle 8i
Recovery Manager User Guide and Reference (A76990-1), for the complete
syntax of the crosscheck utility.
Here is a sample script to crosscheck all backup entries in the recovery
catalog or control file:
allocate channel for maintenance type 'sbt_tape';
crosscheck backup;
exit;
If you find that the crosscheck expires any backup pieces, you can then run
the command delete expired backup; to remove the entries from RMAN.
184 Backing Up Oracle using Tivoli Storage Management