To obtain a good analysis of a SQL statement especially in a new development environment, based on the environment that it is to be deployed on, it would good to sometime reflect/simulate the production volume. Is there a way to input table cardinalities directly into the data dictionary so that the Optimizer could be made to act like in production. I am aware that if this is was an environment with good cardinalities, these values could be exported and imported into another environment. My question is this possible from scratch? Regards, Murali Vallath _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Murali Vallath INET: [EMAIL PROTECTED] 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: [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).