Could it be that the optimizer uses different algorithms since 9.2 value would default max permutations to 2000 instead of the 80000 ---------------------------------------------------------------------- Oracle9i Database Reference
OPTIMIZER_MAX_PERMUTATIONS Parameter type Integer Default value If OPTIMIZER_FEATURES_ENABLE is set to 9.0.0 or higher, then 2000 If OPTIMIZER_FEATURES_ENABLE is set to 8.1.7 or lower, then 80000 Parameter class Dynamic: ALTER SESSION Range of values 4 to 80000 ------------------------------------------------------------------------ David Phillips Support DBA Gasper Corporation [EMAIL PROTECTED] BAARF member #30 -----Original Message----- Sent: Wednesday, October 01, 2003 1:54 PM To: Multiple recipients of list ORACLE-L Yes, they are same. Basically I didn't change any parameter after upgrade. Guang Mei wrote: > > Hi Joan: > > Is your "hash_area_size" parameter the same in both situations? > > Guang > > -----Original Message----- > Joan Hsieh > Sent: Wednesday, October 01, 2003 11:55 AM > To: Multiple recipients of list ORACLE-L > > Kirti, > > I had upgraded a database from 8.1.7.4 to 9.2.0.4. Before the upgrade, > performance is good. After upgrade, one query run time from 2 min to 12 > hours. Of course, I re-analyzed all tables and indexes. The explain plan > changed from hash join to nested-loop. All the parameters are same. So I > have to put optimized_feature_enable=8.1.7 to make run normal as usual. > I hate to disable the new feature, but no choose. > > Joan > > Kirtikumar Deshpande wrote: > > > > Were tables/indexes anlayzed after the upgrade? > > > > - Kirti > > > > --- Jeff Landers <[EMAIL PROTECTED]> wrote: > > > Hello All > > > > > > Version & OS: > > > Upgraded from 9.0.1.4 (Sun Solaris 2.8) to 9.2.0.3. > > > > > > Problem: > > > We've captured the sql text and optimization plans for critical sql > > > prior to upgrading to 9.2. After the upgrade we have noticed > > > that the cost associated with every sql statement is now HUGE > > > compared to its 9.0.1.4 counterpart. Per the statistics being captured > > > via traces, > > > these statement are noticeably slower per execution. > > > > > > Anyone experiencing/experienced the same problem with 9.2? > > > > > > Thank you in advance. > > > > > > > > > > __________________________________ > > Do you Yahoo!? > > Yahoo! SiteBuilder - Free, easy-to-use web site design software > > http://sitebuilder.yahoo.com > > -- > > Please see the official ORACLE-L FAQ: http://www.orafaq.net > > -- > > Author: Kirtikumar Deshpande > > 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). > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: Joan Hsieh > 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). > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: Guang Mei > 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). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Joan Hsieh 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). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Dave Phillips 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).
