Although, I am no rman expert, I can speak to this. We use to do our
Oracle backups with the method you suggest (writing a file to disk and
backing that up). It took 3 hours to create the file (29GB) and another
10 minutes to back it up.
Using the NMO module, we are able to backup the database using rman
scripts in 20 minutes and a restore is only slightly slower. If time is
a problem, and it usually is, I would use the NMO module.
I believe rman can write to tape directly, because the NMO module
basically reads messages from rman. Rman does all of the real work.
But, I cannot tell you how to do that.
R. Scott McKnight
-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]
On Behalf Of IT-Administration ST
Sent: Wednesday, April 05, 2006 5:36 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] Backup of Oracle using rman - interface to
Networker / interface for tape devices ?
Hello dear fellow networkers,
at the moment we backup our oracle databases, located on Solaris
machines, with a special module called "nsrora", which is supplied by
FSC. This module saves the whole amount of space which is reserved, so
if the DB is 150 GB, it saves 150 GB, even if the amount of the real
data in the tablespaces is just 2 GB.
We would like to use rman instead of nsrora. Is is true that for using
rman together with networker we would need another module called "nmo" ?
At the moment we consider to get rman writing backups to a file in the
filesystem and then save that file with networker. A restore would imply
recovering that file to the filesystem and then restore parts of the
oracle database or the full database with rman.
What is the benefit of the nmo?
Is there a way to get rman writing directly to tape without the nmo?
Roman
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