Migrating Existing Backups to ASM Flash Recovery Area
In this example, it is assumed that you have already set the initialization parameters for a flash recovery area in ASM storage, using the process in "Setting Initialization Parameters for Flash Recovery Area in ASM".
Note:
After you configure the database to change the location of the flash recovery area, backups created in the old flash recovery area location remain in their old location, still count against the total disk quota of the flash recovery area, are deleted from the old flash recovery area as space is required for other files, and can still be managed by RMAN and used in RMAN recovery operations. There is no need to move existing backups to the new ASM flash recovery area, unless you need the disk space used by those files for other purposes.
If you do need to free the space taken up by leftover non-ASM flash recovery area files, your options include backing them up to tape (for example, by using BACKUP RECOVERY AREA DELETE INPUT) or moving the backups from the old flash recovery area location to the new one, as described in this section.
To back up the existing archived redo log files to the new flash recovery area, use this command:
RMAN> BACKUP AS COPY ARCHIVELOG ALL DELETE INPUT; To move backup sets to the new flash recovery area, use this command:
RMAN> BACKUP DEVICE TYPE DISK BACKUPSET ALL DELETE INPUT; To move all datafile copies to the new flash recovery area location, use this command:
RMAN> BACKUP AS COPY DATAFILECOPY ALL DELETE INPUT; 