Thanx Breitling. <quote>Leave the index un-analyzed if it works for you</quote>
as u said,index IDX_PROFILE_SHINKI is not analyzed now. that works fine. but there are seperate indexes on column PREF, FLAG and SEX. when those indexes are used ,cost=999. whereas when IDX_PROFILE_SHINKI ( a composite index on ENTPC, FLAG,SEX,PREF,ENTDAY) is used , cost=7. 1.whys there is a huge difference in COST ? 2.does it mean that a composite index is better than individual ones ? Kindly throw some light on this. Regards, Jp. -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Prem Khanna J 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).
