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RMAN: backup multifile-tablespace to a single backupset

edited Aug 18, 2015 10:03AM in Database Backup and Recovery (MOSC) 2 commentsAnswered

Hello,

is there any way to backup a tablespace consisting of several datafiles to a single backupset?

So That you only have to read one backupset to restore the whole tablespace.

The problem is that i've got a 600 GB database with 100 independent small tablespaces/schemas.

If i want to restore a tablespace consisting of 4 datafiles (~40 GB), in the worst way i have to read 4 backupsets. (120 GB)

I've already tested FILESPERSET=1, but it's no a solution because the backup to tape takes 40% longer. (already allocated 3 channels)

Settings

CHANNELS=2 Tape Channels (3 Channels possible)

FILESPERSET=std

MAXSETSIZE=30 G (actual the best solution)

MAXPIECESIZES=std

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