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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Analyze running twice as long after upgrade to 8.1.7.2
I suggest running in parallel. Also, is the table partitioned?
-----Original Message-----
Sent: Monday, June 10, 2002 4:39 PM
To: Multiple recipients of list ORACLE-L
We just upgraded our data warehouse from version 8.0.4 to version 8.1.7.2 of Oracle. We run on Sun Solaris 2.6 vith Veritas Quick I/O.
We do an analyze compute nightly with a 10% estimate of our large, main fact table. Before the upgrade, the analyze ran for 45 minutes. Since the upgrade, it's run three times at a consistent 90 minutes.
I am trying to research on Metalink but have not had much success. Why would this analyze suddenly run longer? I wouldn't think that analyze code is being modified much in new releases. All the effort would go into new packages like DBMS_STATS. Is anyone aware of analyze changing in 8i.
Our analyze was of a partitioned table and was single-threaded, not parallel. I can see that it is still single-threaded.
We really didn't change much during the upgrade. I added another datafile to the SYSTEM tablespace (on the same file system as the previous file).
I also changed parallel_threads_per_cpu from 2 to 0. However, since we never did the analyze in parallel, I don't think it was an issue.
Any other ideas? I'd like to be able to give our application owners some explanation.
Thanks,
Cherie
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Author:
INET: Cherie_Machler_at_gelco.com
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: ListGuru_at_fatcity.com (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).
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Author:
INET: Paula_Stankus_at_doh.state.fl.us
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: ListGuru_at_fatcity.com (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). Received on Mon Jun 10 2002 - 17:16:56 CDT
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