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Compressed Backups
“Real” compressed backupset pieces
If using ASM, get piece size from ASM instance
Notes:
RMAN now supports the creation of compressed backupset pieces. As you can see, my tests show significant reduction in piece size. Compression not only saves space but can save lots of time for network backups (due to the reduced number of bytes sent across the network).
Supplemental Notes
You can configure your RMAN environment so compression is the default. For example:
RMAN> configure device type disk backup type
2> to compressed backupset;
RMAN> configure device type sbt backup type
2> to compressed backupset;
The V$BACKUP_PIECE view has a new column, COMPRESSED, which will contain “YES” for compressed backup pieces.