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Re: [pgsql] How bad is this full vacuum error?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Gary Webster <webster(at)lexmark(dot)com>
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: [pgsql] How bad is this full vacuum error?
Date: 2012-08-01 20:18:27
Message-ID: 22289.1343852307@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-admin
Gary Webster <webster(at)lexmark(dot)com> writes:
> How bad is this?

> 2012-08-01 06:30:03 PDT 15961 [local] cp_repository_na2 ERROR:  missing
> chunk number 0 for toast value 1086399 in pg_toast_987417
> 2012-08-01 06:30:03 PDT 15961 [local] cp_repository_na2 STATEMENT:  VACUUM
> (FULL);

If it's repeatable, it's corrupted data :-(.  If it just happened once,
and doesn't recur on the next try, it might have been related to a system
catalog race condition that we fixed last fall.  (What PG version are you
running?)  I'm unsure about that though, because the toast table name
seems to indicate that it's for a user table not a system catalog, and
I'm not very sure why VACUUM would be doing toast dereferences into a
user table.

			regards, tom lane

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