Return-Path: Received: from newsfeed.cts.com (newsfeed.cts.com [209.68.248.164]) by naude.co.za (8.11.2/8.11.2) with SMTP id g2E8kPk22294 for ; Thu, 14 Mar 2002 03:46:26 -0500 Received: from fatcity.UUCP (uucp@localhost) by newsfeed.cts.com (8.9.3/8.9.3) with UUCP id AAA92042; Thu, 14 Mar 2002 00:40:50 -0800 (PST) Received: by fatcity.com (26-Feb-2001/v1.0g-b70/bab) via UUCP id 00428B80; Wed, 13 Mar 2002 22:58:25 -0800 Message-ID: Date: Wed, 13 Mar 2002 22:58:25 -0800 To: Multiple recipients of list ORACLE-L X-Comment: Oracle RDBMS Community Forum X-Sender: "Magaliff, Bill" Sender: root@fatcity.com Reply-To: ORACLE-L@fatcity.com Errors-To: ML-ERRORS@fatcity.com From: "Magaliff, Bill" Subject: RE: Cost vs Rule Organization: Fat City Network Services, San Diego, California X-ListServer: v1.0g, build 70; ListGuru (c) 1996-2001 Bruce A. Bergman Precedence: bulk Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----_=_NextPart_001_01C1C75E.68AB6200" ------_=_NextPart_001_01C1C75E.68AB6200 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable not much - desire is to keep sql ANSI compliant due to cross-platform = issues (want to be able to run the app on multiple db's) -----Original Message----- Sent: Thu, March 07, 2002 2:44 PM To: Multiple recipients of list ORACLE-L How much have you played with Oracle Hints??? -Joe --- "Magaliff, Bill" wrote: > I work in a dev shop - most of the sql is canned and pretty basic.=20 > We've > been running CBO in all of our dev environments, but we have a few > long txns > that just take forever. At the request of some savvy developers, I > turned > on RBO, and it brought down execution times dramatically. >=20 > I've been analyzing affected tables often (we do a lot of bulk > load/unload > for testing), and have played with partitioning and clustering, > particularly > on one table that's just a dog. CBO will always do a FTS where RBO > uses the > PK to retrieve data. >=20 > Where to go next? I've been unable to alter the costs dramatically > enough > to make any real difference in execution time. >=20 > thx >=20 > --=20 > Please see the official ORACLE-L FAQ: http://www.orafaq.com > --=20 > Author: Magaliff, Bill > INET: Bill.Magaliff@lendware.com >=20 > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > San Diego, California -- Public Internet access / Mailing > Lists > -------------------------------------------------------------------- > 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). __________________________________________________ Do You Yahoo!? Try FREE Yahoo! Mail - the world's greatest free email! http://mail.yahoo.com/ --=20 Please see the official ORACLE-L FAQ: http://www.orafaq.com --=20 Author: Joe Raube INET: jraube@yahoo.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- 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). --=20 Please see the official ORACLE-L FAQ: http://www.orafaq.com --=20 Author: Magaliff, Bill INET: Bill.Magaliff@lendware.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- 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). 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If you have questions about this message, contact Postmaster@fatcity.com for clarification. ------_=_NextPart_001_01C1C75E.68AB6200-- -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Magaliff, Bill INET: Bill.Magaliff@lendware.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- 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).