Re: Urgent: System tablespace corruption

This was two years ago, and I don't have the name of a particular individual. He's probably not still there in any case. Call Oracle support as a priority 1 (downed production server) and explain your situation. If, for some reason you don't have support, now's the time to start.

Van

"Amol" <addprabha_at_my-deja.com> wrote in message news:8qo1ub$vg6$1_at_nnrp1.deja.com...
> Can you please give the reference with whome you worked with to solve
> the problem?
> Waiting for the reply and regards,
> Amol
>
> In article <Wexz5.1043$np1.129348_at_newshog.newsread.com>,
> "Van Messner" <vmessner_at_bestweb.net> wrote:
> > For this problem, please call Oracle support. There are some
 undocumented
> > init.ora parameters that can be invoked as a sort of "court-of-last-
 resort"
> > when you don't have a lot to lose anyway. I was once called to a
 site where
> > the sysadmin had turned of archiving temporarily (four months ago)
 and the
> > cold backup tape drive had no tape etc. etc. and with Oracle
 support's help
> > we recovered all of the database to within about 30 minutes of the
 point of
> > failure.
> >
> > Van
> >
> > "Dave A" <dave_and_vanna_at_hotmail.com> wrote in message
> > news:sssargr05fun77_at_corp.supernews.com...
> > > While I can't add anything about recovering your system tablespace
 to the
> > > discussion, might I ask why *all* of the backups contain the
 corruption?
> > > Has this database been corrupt since it's inception? Are you using
 Veritas
> > > QuickIO by chance? It has a terrible bug that causes this
 corruption to
> > > certain datafiles both in the database as well as when the datfiles
 are
> > > backed up.(Yes, there is a patch).
> > >
> > > --
> > > Dave A
> > >
> > >
> > > "Ronald" <ronr_at_deja.com> wrote in message
> > > news:01HW.B5F3B36500027A5310DEFB20_at_news.raketnet.nl...
> > > > On Sun, 24 Sep 2000 9:01:08 +0200, Amol wrote
> > > > (in message <8qk8rg$rgb$1_at_nnrp1.deja.com>):
> > > >
> > > > > Oracle gurus,
> > > > >
> > > > > I have oracle 7.3.4 and the problem I am facing is block
 corruption in
> > > > > system tablespace. I cannot restore it from any of the backups
 as the
> > > > > corruption exists in all the backups of the DB. I did verify
 this
 using
> > > > > the tool "dbv". Please suggest if in any way the corruption can
 be
> > > > > removed without loss of any data.
> > > > >
> > > > > Can I use the export utility for the above problem? What would
 be the
> > > > > implication if I change the parameter DB_BLOCK_CHECKSUM to
 false?
 Will
> > > > > it solve this problem? Also suggest how to find which
 table/index is
> > > > > corrupt from the system datafile. This is very urgent and your
> > > > > suggestions will be very much appreciated.
> > > >
> > > > You could try to do a full export and import in in a fresh created
 database.
> > > > Without a valid backup you don't have much chance to do something
 else.
 If
> > > > you know EXACTLY what you do you could use dd to manipulate the
 blocks
 but
 I
> > > > don't think this is the case and I really can't recommend this to
 you.
> > > > (oracle does not support it too).
> > > > --
> > > > Ronald
> > > >
> > > > certified oracle dba/ unix sa
> > > > http://home.wxs.nl/~ronr/professional.html
> > > >
> > >
> > >
> >
> >
>
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
Received on Mon Sep 25 2000 - 14:06:54 CDT