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From: Tom Lane <tgl@sss.pgh.pa.us>
To: soumik.bhattacharjee@kpn.com
cc: pgsql-admin@lists.postgresql.org
Subject: Re: Table Drop Error
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<soumik.bhattacharjee@kpn.com> writes:
> # delete from pg_depend where objid=49179;
> DELETE 0
> # delete from pg_depend where objid=49179;
> DELETE 0
> # DROP TABLE caprimeta.tcr_codes CASCADE;
> ERROR:  cache lookup failed for relation 49179

It's not really a great idea to go dropping catalog rows without
knowing exactly what you're doing, which I gather you don't.
However ... are there pg_depend entries with refobjid=49179 ?

			regards, tom lane