Received: from maia.hub.org (maia-3.hub.org [200.46.204.243]) by mail.postgresql.org (Postfix) with ESMTP id C6E341337B39 for ; Mon, 29 Nov 2010 20:09:50 -0400 (AST) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.243]) (amavisd-maia, port 10024) with ESMTP id 67848-08 for ; Tue, 30 Nov 2010 00:09:43 +0000 (UTC) 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 339FD1335B36 for ; Mon, 29 Nov 2010 20:09:43 -0400 (AST) 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 oAU09fsm007917; Mon, 29 Nov 2010 19:09:41 -0500 (EST) To: Michael Holt cc: pgsql-admin@postgresql.org Subject: Re: Diagnosing Postgres Segfault In-reply-to: <8a0b69864ef0bd962213ad553c113a44@mail.gmail.com> References: <8a0b69864ef0bd962213ad553c113a44@mail.gmail.com> Comments: In-reply-to Michael Holt message dated "Mon, 29 Nov 2010 15:41:28 -0800" Date: Mon, 29 Nov 2010 19:09:41 -0500 Message-ID: <7916.1291075781@sss.pgh.pa.us> From: Tom Lane X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.91 tagged_above=-10 required=5 tests=BAYES_00=-1.9, T_RP_MATCHES_RCVD=-0.01 X-Spam-Level: X-Archive-Number: 201011/243 X-Sequence-Number: 36209 Michael Holt writes: > I’m trying to figure out what might have caused this, partly because I want > to replicate the segfault to see if it is the cause of another system > randomly freezing on us. Is there any way to figure out exactly what query > being run at the time of the crash was doing? Is there a core dump file? If so, a stack trace from that might be informative. regards, tom lane