Received: from localhost (unknown [200.46.204.183]) by postgresql.org (Postfix) with ESMTP id 2EDB937BD40 for ; Tue, 30 Sep 2008 15:44:45 -0300 (ADT) Received: from postgresql.org ([200.46.204.86]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 09597-06 for ; Tue, 30 Sep 2008 15:44:41 -0300 (ADT) 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 postgresql.org (Postfix) with ESMTP id C27FA37BD0B for ; Tue, 30 Sep 2008 15:44:41 -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 m8UIicdT023387; Tue, 30 Sep 2008 14:44:38 -0400 (EDT) To: Chander Ganesan cc: Jonny , pgsql-admin@postgresql.org Subject: Re: turning of pg_xlog In-reply-to: <48E26C60.3060307@otg-nc.com> References: <48E0B559.3070406@terminalschmiede.de> <48E26C60.3060307@otg-nc.com> Comments: In-reply-to Chander Ganesan message dated "Tue, 30 Sep 2008 14:13:52 -0400" Date: Tue, 30 Sep 2008 14:44:38 -0400 Message-ID: <23386.1222800278@sss.pgh.pa.us> From: Tom Lane X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0 tagged_above=0 required=5 tests=none X-Spam-Level: X-Archive-Number: 200809/355 X-Sequence-Number: 30448 Chander Ganesan writes: > You should also understand that if you set checkpoint_segments to a > small number, its still possible that PostgreSQL might use more than > that number for a large transaction. "Large transactions" have nothing to do with this. You are confusing Postgres' implementation with Oracle's. regards, tom lane