Return-Path: Received: from ensim.rackshack.net (root@localhost) by orafaq.net (8.11.6/8.11.6) with ESMTP id h8J1Pi705897 for ; Thu, 18 Sep 2003 20:25:44 -0500 X-ClientAddr: 66.27.56.210 Received: from ns3.fatcity.com (rrcs-west-66-27-56-210.biz.rr.com [66.27.56.210]) by ensim.rackshack.net (8.11.6/8.11.6) with ESMTP id h8J1Ph505892 for ; Thu, 18 Sep 2003 20:25:43 -0500 Received: from ns3.fatcity.com (localhost.localdomain [127.0.0.1]) by ns3.fatcity.com (8.12.5/8.12.5) with ESMTP id h8IMkkS0004565 for ; Thu, 18 Sep 2003 15:49:44 -0700 Received: (from root@localhost) by ns3.fatcity.com (8.12.5/8.12.5/Submit) id h8IMUU4o002664 for oracle-l@orafaq.net; Thu, 18 Sep 2003 15:30:32 -0700 Received: by fatcity.com (05-Jun-2003/v1.0g-b73/bab) via fatcity.com id 005D06A5; Thu, 18 Sep 2003 15:29:45 -0800 Message-ID: Date: Thu, 18 Sep 2003 15:29:45 -0800 To: Multiple recipients of list ORACLE-L X-Comment: Oracle RDBMS Community Forum X-Sender: "Ryan" Sender: ml-errors@fatcity.com Reply-To: ORACLE-L@fatcity.com Errors-To: ML-ERRORS@fatcity.com From: "Ryan" Subject: Re: sizing sort_area_size Organization: Fat City Network Services, San Diego, California X-ListServer: v1.0g, build 73; ListGuru (c) 1996-2003 Bruce A. Bergman Precedence: bulk Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit can anyone recommend a good article managing sort_Area_size and understanding temp tablespace waits? ----- Original Message ----- To: "Multiple recipients of list ORACLE-L" Sent: Thursday, September 18, 2003 6:34 PM > > I have been doing some alter sessions to improve performance of gigabyte > sized 'minus' operations. How do I tell if this is helping other than > completion time? > > > > I believe that if LIOs to PIOs ratio improves with the SAME query then > sort_area_size has helped right?(notice Im not trying to improve my > cache/hit ratio). > > If you see less direct IO waits on your temporary tablespace, then > increasing s_a_s has helped. > > > > > I get this from v$sess_io. > > > > how do I tell how much temp tablespace my session uses? I cant find a > statistic for it? I see that I used up all my PGA since PGA size and PGA max > size are equal in v$sesstat. > > select * from v$sort_usage where sid = ; > > > anything else I can look at? > > Activity on temp tablespace from v$tempstat.. but it's only good enough for > comparing with baselines.. > > Tanel. > > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: Tanel Poder > INET: tanel.poder.003@mail.ee > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: ListGuru@fatcity.com (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Ryan INET: rgaffuri@cox.net Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru@fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).