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: [EMAIL PROTECTED] 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: [EMAIL PROTECTED] (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).
