Re: Catalog RMAN backups on Tape?
- From: "April Sims" <sims@xxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 26 Jan 2010 08:14:45 -0700
Everyone,
Can tape backups be restored to a physical disk without RMAN and then use RMAN
to catalog the existing backups?
Is it the MML/API layer that actually writes and reads to the tape and that the
objects are no longer retrievable?
What does everyone do with tape backups in the catalog? Put the keyword KEEP
on everything? or is it more of just keeping a monthly or a yearly copy?
thanks for clarifying,
April Sims
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>>> Morgan Wigge <morgan@xxxxxxxx> 1/26/2010 1:23 AM >>>
Hi,
i have a printed copy (Just in case of) of Note: 60545.1 "How to Extract
Controlfiles, Datafiles and Archive Logs from RMAN Backupsets without using
RMAN" which I think is the document Robert refer to from metalink.
It's included information about how to use sys.dbms_backup_restore package to
extract information from backupsets
I think it was removed from public at least 5 years ago and the last revision
date was 2003. I also haven't used it for years so i'm not sure about how valid
the information are anymore.
I could scan and send a copy, but i'm not sure about what the legal issues
would be sharing such documents.
Best Regards
Morgan
2010/1/25 Robert Freeman <robertgfreeman@xxxxxxxxx>
You may not like the response from NB on this one. I know with Tivoli there is
no alternate interface to get the files off of tape to disk if they went
through the SBT interface (tried this about 6 months ago). NB may we be the
same. You might open an SR with Oracle and see if they have any alternatives. I
see references to a Metalink article called "How to catalog RMAN Tape backups"
but the article has been pulled. I'd open an SR with them and NB ....
RF
Robert G. Freeman
Oracle ACE
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From: Thomas Roach <troach@xxxxxxxxx>
To: Robert Freeman <robertgfreeman@xxxxxxxxx>
Cc: Oracle-L Freelists <oracle-l@xxxxxxxxxxxxx>
Sent: Mon, January 25, 2010 12:45:24 PM
Subject: Re: Catalog RMAN backups on Tape?
Thanks Robert,
This is NetBackup 6.5 and Oracle 10.2.0.4.
I see the tapes as full in NB. I want to restore the RMAN backups to the file
system where I can catalog them there, but I do not see how to do that because
I cannot see the backups? I see regular backups, but Oracle seems to be
treating differently and NB doesn't let you see them. Does anyone have
experience with this? May have to reach out to NB with help on this one.
On Mon, Jan 25, 2010 at 2:36 PM, Robert Freeman <robertgfreeman@xxxxxxxxx>
wrote:
The catalog command does not support SBT devices (at least in 11g and 10g and I
think going back forever). So you can't re-catalog the backup pieces. Also
there is no guarantee that the tapes won't be marked as deleted on the catalog
of the tape system, so you might have double trouble there.
If it's a BIG deal, you could get an older control file from before the
crosscheck to use for restore purposes. It should still have the records in it
for the backups. Hopefully the pieces are still there and not marked as deleted
on the silo catalog.
If you know the backup set pieces on the tape devices are intact, you can write
PL/SQL code to access them. This becomes a bit complex (I used to have to do it
all the time in the Oracle 8 days for various reasons). Metalink used to have
articles on how to do this.
Automating the delete after the crosscheck is dangerous when you are using
SBT...... :)
Robert G. Freeman
Oracle ACE
Ask me about on-site Oracle Training! RMAN, DBA, Tuning, you name it!
Author:
Oracle Database 11g RMAN Backup and Recovery (Oracle Press) - ON ITS WAY SOON!
OCP: Oracle Database 11g Administrator Certified Professional Study Guide
(Sybex)
Oracle Database 11g New Features (Oracle Press)
Oracle Database 10g New Features (Oracle Press)
Other various titles
Blog: http://robertgfreeman.blogspot.com/
Check out my new blog series on installing Oracle Database 11gR2 on Windows
using VMWare!
From: Thomas Roach <troach@xxxxxxxxx>
To: Oracle Discussion List <oracle-l@xxxxxxxxxxxxx>
Sent: Mon, January 25, 2010 11:34:46 AM
Subject: Catalog RMAN backups on Tape?
Hi,
We had an issue with one of our scripts where it did a crosscheck and because
our tapes weren't in the cabinet, they got marked and removed. I know how to
catalog backups that are on disk, but is anyone aware of the steps for doing
tapes?
Thanks,
Tom
--
Thomas Roach
813-404-6066
troach@xxxxxxxxx
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