It disables index hash joins (hashing a scan of two indexes on a single table to generate a result without visiting the table). If you are upgrading, you weren't using that path before, so won't miss it if you switch it off now.
Regards Jonathan Lewis http://www.jlcomp.demon.co.uk The educated person is not the person who can answer the questions, but the person who can question the answers -- T. Schick Jr One-day tutorials: http://www.jlcomp.demon.co.uk/tutorial.html Three-day seminar: see http://www.jlcomp.demon.co.uk/seminar.html ____UK___November The Co-operative Oracle Users' FAQ http://www.jlcomp.demon.co.uk/faq/ind_faq.html ----- Original Message ----- To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> Sent: Wednesday, December 03, 2003 8:54 PM > > We have discovered an... opportunity... and Oracle's suggestion is to set > _index_join_enabled = false > > Anyone seen any detrimental effects of setting this parameter to false in > 9.2.0.#? > > April Wells > Oracle DBA/Oracle Apps DBA > Corporate Systems > Amarillo Texas > /\ > / \ > / \ > \ / > \/ > >\< > \ > >\< > \ > Few people really enjoy the simple pleasure of flying a kite > Adam Wells age 11 > -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Jonathan Lewis 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).
