From: Steve Crawford <scrawford@pinpointresearch.com>
To: pgsql-admin@postgresql.org Admin <pgsql-admin@postgresql.org>
Subject: could not open relation with OID
Date: Wed, 13 Jul 2011 15:32:30 -0700
Message-ID: <4E1E1CFE.2030500@pinpointresearch.com> (raw)
I've seen the "could not open relation with OID" error a couple times
recently and Googling for that error gives responses ranging from *very
scary* to fuggetaboutit.
The error today occurred running this query which is part of a database
status reporting script:
select
pg_size_pretty(sum(pg_relation_size(oid))::bigint) as "Database
Table Size"
from
pg_class
where
relkind = 'r'
;
could not open relation with OID 81285213
Pre-answering some potential questions based on threads I read:
- Version is 8.3 x86_64 (about to be replaced with 9.0).
- Database appears to be functioning fine otherwise and query reran
without error.
- Size just under 100-million total rows and 12GB (counting tables only).
- Backups completing without error.
- Restore of backup to a twin machine completes without error.
- There are lots of scripts and processes that use temporary tables
(there are currently 35 pg_temp_XX schemas with the highest being
pg_temp_55)
So...
Worry or not worry?
Cheers,
Steve
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Cc: scrawford@pinpointresearch.com
Subject: Re: could not open relation with OID
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