Received: from localhost (maia-3.hub.org [200.46.204.184]) by postgresql.org (Postfix) with ESMTP id 9AB269FBBED for ; Tue, 8 May 2007 18:52:20 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.184]) (amavisd-maia, port 10024) with ESMTP id 09490-04 for ; Tue, 8 May 2007 18:52:13 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.5 Received: from lists.commandprompt.com (host-254.commandprompt.net [207.173.203.254]) by postgresql.org (Postfix) with ESMTP id E0B299FB573 for ; Tue, 8 May 2007 18:52:16 -0300 (ADT) Received: from perhan.alvh.no-ip.org (201-221-217-243.bk12-dsl.surnet.cl [201.221.217.243]) (authenticated bits=0) by lists.commandprompt.com (8.13.7/8.13.6) with ESMTP id l48LqIWB010595; Tue, 8 May 2007 14:52:18 -0700 Received: by perhan.alvh.no-ip.org (Postfix, from userid 1000) id 9865132A0F; Tue, 8 May 2007 17:52:13 -0400 (CLT) Date: Tue, 8 May 2007 17:52:13 -0400 From: Alvaro Herrera To: Y Sidhu Cc: pgsql-performance@postgresql.org Subject: Re: What's The Difference Between VACUUM and VACUUM ANALYZE? Message-ID: <20070508215213.GC24167@alvh.no-ip.org> References: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.13 (2006-08-11) X-Virus-Scanned: ClamAV version 0.88.5, clamav-milter version 0.88.5 on projects.commandprompt.com X-Virus-Status: Clean X-Greylist: Sender succeded SMTP AUTH authentication, not delayed by milter-greylist-1.6 (lists.commandprompt.com [192.168.2.159]); Tue, 08 May 2007 14:52:19 -0700 (PDT) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200705/146 X-Sequence-Number: 24536 Y Sidhu escribió: > I am trying to follow a message thread. One guy says we should be running > vacuum analyze daily and the other says we should be running vacuum multiple > times a day. I have tried looking for what a vacuum analyze is to help me > understand but no luck. VACUUM ANALYZE is like VACUUM, except that it also runs an ANALYZE afterwards. -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc.