Oracle-L: RE: RMAN NETBACKUP recovering from say 6 MONTHS ago

From: Aponte, Tony <AponteT_at_hsn.net>
Date: Mon, 10 Jun 2002 09:03:19 -0800
Message-ID: <F001.0047908A.20020610090319@fatcity.com>

Netbackup has a repository that keeps track of what files are on which tapes, dates, sizes, volumes, serial number, etc. Depending on how you are restoring the files, Netbackup gets a request to get a file name (as it is know on tape) and checks it's catalog for the entry. The bprestore process (or whatever it's called on your platform) sends a request in a proprietary format to the media manager host. You (or your SA) can look at the Netbackup logs or use bpmon to view the details for the request, including the tape label.

The hang you are seeing is actually controlled by a timeout setting. Once the request is made for loading of a tape, the restore process is at the mercy of whatever mounter is used on the media manager host (robot, tape jockey, etc.) The timer expires, signals the bprestore and lets it exit gracefully returning an exit code in the process. Use this exit code to determine what the caused timeout; it's in the Veritas Netbackup manual. I bet the error code is for "media not found and timer expired" or something like that since the request isn't failing right away (which would mean that the tape was explicitly expired and the catalog entries updated to reflect the changes.)

HTH
Tony Aponte

-----Original Message-----
Sent: Monday, June 10, 2002 4:18 AM
To: Multiple recipients of list ORACLE-L

I want to alternate host my database to 6 months ago: The media manager only keeps 2 months of data online and when i recover until etc.. the job hangs and then finally gives up, obviously as the tape is not inside: My question is how does Netbackup know which tape to load, or how do I know which tape to put in the media manager or which range of tapes: Anybody an help with this

Thanks

Sam

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Author: Aponte, Tony
INET: AponteT_at_hsn.net

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