Re: RMAN limitiations when used with controlfile only

  • From: "Syed Jaffar Hussain" <sjaffarhussain@xxxxxxxxx>
  • To: jkstill@xxxxxxxxx
  • Date: Wed, 18 Apr 2007 09:20:19 +0300

Jared,

One of the earlier myth was to have catalog when backing of multiple
databases, if one database, then, recommendation was nocatalog.
Myself thought, the myth is be reasonable as having another database for
catalog, and its maintenance, of course cost associated with and other
issues.
Recently past, I have realized that having catalog database wold be more
beneficial than using nocatalog.
If catalog is in place, using report schema at time, you can even analyze
the database growth.



On 4/18/07, Jared Still <jkstill@xxxxxxxxx> wrote:

Dear List:

I have been compiling a list of limitiations that are imposed
on RMAN when the catalog database is in the controlfile only.

While Oracle recommends using a repository database, the
official proclamation has been that its use is optional.

Lately it has become apparent that a repository database
isn't really optional.

The only stated limitation of using the controfile only is that stored
scripts cannot be used.  There are several documents on MetaLink
that seem to contradict that. Limitations with TSPITR, databases that
may be missing archive log backups do to being opened with
RESETLOGS, and others I'm sure.

The fix for the limitiations I have found is to 'use a recovery catalog
in the database.'

If you know of any other limitations imposed on RMAN when the
catalog resides only in the controlfile, please post them.

Thanks,

--
Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist




--
Best Regards,
Syed Jaffar Hussain
Oracle ACE
8i,9i & 10g OCP DBA

http://jaffardba.blogspot.com/
http://www.oracle.com/technology/community/oracle_ace/ace1.html#hussain
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