Return-Path: Received: from ensim.rackshack.net (root@localhost) by orafaq.net (8.11.6/8.11.6) with ESMTP id hADIkC612175 for ; Thu, 13 Nov 2003 12:46:12 -0600 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 hADIkBc12170 for ; Thu, 13 Nov 2003 12:46:11 -0600 Received: from ns3.fatcity.com (localhost.localdomain [127.0.0.1]) by ns3.fatcity.com (8.12.8/8.12.8) with ESMTP id hADFo1i7024978 for ; Thu, 13 Nov 2003 07:51:25 -0800 Received: (from root@localhost) by ns3.fatcity.com (8.12.8/8.12.5/Submit) id hADFkMXf022974 for oracle-l@orafaq.net; Thu, 13 Nov 2003 07:46:24 -0800 Received: by fatcity.com (05-Jun-2003/v1.0g-b73/bab) via fatcity.com id 005D68FC; Thu, 13 Nov 2003 07:49:25 -0800 Message-ID: Date: Thu, 13 Nov 2003 07:49:25 -0800 To: Multiple recipients of list ORACLE-L X-Comment: Oracle RDBMS Community Forum X-Sender: John Kanagaraj Sender: ml-errors@fatcity.com Reply-To: ORACLE-L@fatcity.com Errors-To: ML-ERRORS@fatcity.com From: John Kanagaraj Subject: RE: RBO to CBO migration books/ material 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 Content-Transfer-Encoding: 7bit Suhen, >Any good books available to convert applications from RBO to CBO. >References to Oracle 9i. I am not aware of any book, but there is a limited number of articles/papers (most well-known is Tim Gorman's 'Search for intelligent life in the CBO' at http://www.evdbt.com) that can point you in the right direction. My humble addition is the one at http://www.geocities.com/john_sharmila/links.htm - there are a number of ML articles on the CBO itself that will help: Doc ID: 35934.1 is a good one to start. I would personally do the following: * Trace all SQL coming into a live RBO-only system * Identify any code that uses the RULE Hint (in spite of being in a RULE based DB) * Create a clone of prod on a server of the same or similar capacity * Collect Statistics (COMPUTE if you can) * Set the OPTIMIZER_MODE to CHOOSE; review/reset other CBO related parameters (see my paper) * Let the Developers and UA testers loose on that Db * Use Cary's method to identity the top set of business processes and determine if the performance is Ok * If not Ok, then tune it... All the best! John Kanagaraj DB Soft Inc Phone: 408-970-7002 (W) Disappointment is inevitable, but Discouragement is optional! ** The opinions and facts contained in this message are entirely mine and do not reflect those of my employer or customers ** -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: John Kanagaraj INET: john.kanagaraj@hds.com 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).