Received: from maia.hub.org (unknown [200.46.208.211]) by mail.postgresql.org (Postfix) with ESMTP id 2FE5363486C; Sat, 3 Apr 2010 14:05:26 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.208.211]) (amavisd-maia, port 10024) with ESMTP id 67201-09; Sat, 3 Apr 2010 17:05:11 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130]) by mail.postgresql.org (Postfix) with ESMTP id 31B9263415E; Sat, 3 Apr 2010 14:05:11 -0300 (ADT) Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1]) by sss.pgh.pa.us (8.14.2/8.14.2) with ESMTP id o33H59o3021302; Sat, 3 Apr 2010 13:05:09 -0400 (EDT) To: raghavendra t cc: pgsql-general@postgresql.org, pgsql-performance@postgresql.org Subject: Re: ERROR: cache lookup failed for relation X In-reply-to: References: Comments: In-reply-to raghavendra t message dated "Sat, 03 Apr 2010 22:08:11 +0530" Date: Sat, 03 Apr 2010 13:05:09 -0400 Message-ID: <21301.1270314309@sss.pgh.pa.us> From: Tom Lane X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-2.464 tagged_above=-10 required=5 tests=AWL=0.135, BAYES_00=-2.599 X-Spam-Level: X-Archive-Number: 201004/141 X-Sequence-Number: 161339 raghavendra t writes: > I am facing the error "cache lookup failed for relation X" in Postgres-8.4.2 > [ when dropping the same table concurrently in two sessions ] > Could plese tell me, why this is generated and what is the cause.