Re: Cache lookup failed?

"Jeff Boes" <jboes@nexcerpt.com> writes:
> What might be the source of this error?
>  Cache lookup failed for relation 188485009
> We've been getting these at odd intervals, and they are not reproducible.

Always the same OID, or different ones?  Does that OID actually exist in
pg_class?  Can you tell us exactly what SQL command(s) are producing the
error?  (If not, better turn on query logging so you can find out.)

> Our setup:
>  PostgreSQL 7.3.3

BTW, I'd urge updating to 7.3.4 ASAP.  Better to do it in a controlled
fashion than to find yourself looking at a forced update if 7.3.3 fails
to restart after a crash...

            regards, tom lane