Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Usenet -> c.d.o.server -> Re: Applying archivelogs to a cold backup - shortcut?

Re: Applying archivelogs to a cold backup - shortcut?

From: Night Shade Books <jasonw_at_nightshadebooks.com>
Date: Mon, 19 Nov 2001 00:52:36 -0800
Message-ID: <6E819C57D5B93060.9E19F01542E81E60.F3B05E34554F783D@lp.airnews.net>


Hrmm. I'm not sure I understand.

When I took a cold backup, I backed up the datafiles, the controlfiles, and the redo logs.

When I restored, I copied them all back to the appropriate directories. Then I went into svrmgrl and started it up. Worked like a charm. Except it was out of date. So I wanted to apply the archive logs to bring it up to date.

If I do a 'recover database' it tells me that recovery is not needed. So what I'm doing now is a
'recover automatic database using backup controlfile until cancel'. I'm not sure if it's working or not, but it seems to be.

Jason

"Howard J. Rogers" <dba_at_hjrdba.com> wrote in message news:3bf8c674$0$13483$afc38c87_at_news.optusnet.com.au...
> That's probably because you restored the control files (and online redo
> logs?). You shouldn't have done. If performing an incomplete recovery
> (which is what an 'until cancel' is), you *only* restore the datafiles
(all
> of 'em).
>
> If you restore the whole lot (especially from a cold backup) the thing is
> entirely consistent and requires no recovery.
>
> If you have genuinely lost all controlfiles and all redo logs, it's not
just
> an automated backup strategy that's up the spout, it's the entire database
> configuration. Whatever happened to multiplexing of control files and
redo
> logs?
>
> Regards
> HJR
> --
> Resources for Oracle: http://www.hjrdba.com
> ===============================
>
>
> "Night Shade Books" <jasonw_at_nightshadebooks.com> wrote in message
> news:6D701DD75D0F8997.F91990E9A534E0B2.110CB707C27625D2_at_lp.airnews.net...
> > Basically, the backup isn't automated for this db yet. Still working on
> > that.
> >
> > But I run into a problem doing 'recover database' or 'recover automatic
> > database'. It gives me an ORA-00264: no recovery required.
> >
> > Help?
> >
> > Jason
> >
> > "Howard J. Rogers" <dba_at_hjrdba.com> wrote in message
> > news:3bf8c2f8$0$13483$afc38c87_at_news.optusnet.com.au...
> > > Oops, that will teach me to slow down and read more carefully.
> > >
> > > You're doing an incomplete recovery (...until cancel) and you're using
a
> > > backup controlfile. Both will require you to issue an 'alter database
> > open
> > > resetlogs' when all the available archives have been applied. That in
> > turn
> > > requires you (if you've got any sense) to then perform an immediate
> > > shutdown, followed by a new closed database backup (resetlogs renders
> all
> > > prior backups and archives useless).
> > >
> > > If you follow the advice in my earlier message, and issue the 'auto'
> > command
> > > when first prompted for an archive to apply (or the 'recover automatic
> > > database until cancel') then the first run through will apply, let us
> say,
> > > 800 logs -and then bomb out, because the 801st log (presumably the
> current
> > > redo log) is missing (I presume that's why you're doing an 'until
> cancel'
> > > recovery anyway.... let's hope so). That's OK: when the recovery
> process
> > > fails to locate log 801, it will crash out horribly: you just start it
> up
> > > again, issue the 'recover database until cancel' command once more,
and
> > this
> > > time the first log it prompts for will be the missing one -so *now*
you
> > type
> > > 'cancel', and that terminates recovery. Next comes your alter
database
> > open
> > > resetlogs, and then the shutdown and new backup.
> > >
> > > Excuse me for asking, though: what kind of a database is it that
forces
> > you
> > > to restore a backup from over 800 logs ago? Either you are backing up
> > every
> > > night (in which case 800 log switches implies your redo logs are
> > hopelessly
> > > small), or you are backing up once in a blue moon -in which case, one
> > > wonders whether a slightly higher frequency of backups might be in
> order!
> > >
> > > Regards
> > > HJR
> >
> >
>
>
Received on Mon Nov 19 2001 - 02:52:36 CST

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US