Can you no longer resync your catalog?
Are you getting the following messages
RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of configure command at 02/04/2010 13:52:00 RMAN-03014: implicit resync of recovery catalog failed RMAN-03009: failure of full resync command on default channel at 02/04/2010 13:52:00 ORA-01580: error creating control backup file /home/luke/rman_backup_area/test/scf/test_scf.f ORA-27040: file create error, unable to create file Linux Error: 2: No such file or directory
You cannot now just change the entry whilst connected to the catalog like so
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/home/oracle/rman_backup_area/test/scf/test_scf.f';
As to do so it requires that the catalog be resync'ed but it can't do that because it cannot write a snapshot controlfile! Ahh!
To resolve the issue there are 2 solutions that I know of
1. Using RMAN connect to the target with no catalog
rman target / nocatalog CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/home/oracle/rman_backup_area/test/scf/test_scf.f';
2. Use the DBMS_BACKUP_RESTORE package from the database
EXECUTE SYS.DBMS_BACKUP_RESTORE.CFILESETSNAPSHOTNAME ('/home/oracle/rman_backup_area/test/scf/test_scf.f');