Thread: Re: CASCADING could not open relation with OID

Actually the server logging was disabled, which I am now enabling.

But scripts have been complaining about not finding this or that
relation with OID x. I've located each of the tables and am trying to
recreate them.

If I try to read from one, I get ERROR:  could not open relation with
OID 16896

If I try to redefine it, I get ERROR:  relation "bb_master" already
exists

If I try to DROP it, ERROR:  cache lookup failed for relation 16896

How can I get around this? What's happening?

Tomorrow I should have better logs on the initially reported problem.

Many thanks
Jaime


-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Wednesday, August 23, 2006 5:20 PM
To: Silvela, Jaime (Exchange)
Cc: pgsql-general
Subject: Re: [GENERAL] CASCADING could not open relation with OID

"Silvela, Jaime \(Exchange\)" <JSilvela@Bear.com> writes:
> WARNING:  terminating connection because of crash of another server
> process

This is not an interesting message: the interesting message is the
previous one about exactly what happened to the other process.  Look
earlier in the server log.

            regards, tom lane



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"Silvela, Jaime \(Exchange\)" <JSilvela@Bear.com> writes:
> If I try to read from one, I get ERROR:  could not open relation with
> OID 16896
> If I try to redefine it, I get ERROR:  relation "bb_master" already
> exists
> If I try to DROP it, ERROR:  cache lookup failed for relation 16896

What do you get from
    select oid, * from pg_class where relname = 'bb_master';
    select oid, * from pg_class where oid = 16896;

If either one fails to get a hit, try it again after doing
    set enable_indexscan = off;

> How can I get around this? What's happening?

Hard to tell.  It sounds a bit like pg_class catalog damage, but the
above experiment will tell us more.

            regards, tom lane