RE: Analyze

From: Smith, Ron L. <rlsmith_at_kmg.com>
Date: Mon, 16 Jul 2001 15:07:31 -0700
Message-ID: <F001.0034B9B3.20010716152030@fatcity.com>

Here is the syntax I am using:
execute dbms_utility.analyze_schema('PROD','COMPUTE');

Is there anything that might have made the analyze run so long? By the way, we are running 7.3.4.

Ron

-----Original Message-----
Sent: Monday, July 16, 2001 5:32 PM
To: Multiple recipients of list ORACLE-L

Really? On our approx. 200GB production DB (8.1.6 on Win2k) DBMS_Utility.Analyze_Schema takes about an hour each morning (estimate, sample 5%). I tried DBMS_Stats.Gather_Schema_Stats with 5% sampling a few weeks ago and finally killed the thing after almost 3 hours and, if I remember correctly, much more than usual CPU utilization.

I know it's the recommended tool, but how do you get better performance from DBMS_Stats?

Thanks.

Jack

Jack C. Applewhite
Database Administrator/Developer
OCP Oracle8 DBA
iNetProfit, Inc.
Austin, Texas
www.iNetProfit.com
japplewhite_at_inetprofit.com
(512)327-9068

-----Original Message-----
Spence
Sent: Monday, July 16, 2001 4:30 PM
To: Multiple recipients of list ORACLE-L

Why not use DBMS_STATS? It is faster.

"Walking on water and developing software from a specification are easy if both are frozen."

Christopher R. Spence
Oracle DBA
Fuelspot

-----Original Message-----
Sent: Monday, July 16, 2001 9:46 AM
To: Multiple recipients of list ORACLE-L

I have an Analyze Schema running once a week for a 35G instance. The Analyze is taking about 9 hours. This is too long. What is the opinion on doing an Analyze on a percentage of the data? 20%? 40%?

Ron Smith

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Author: Jack C. Applewhite
INET: japplewhite_at_inetprofit.com

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Author: Smith, Ron L.
INET: rlsmith_at_kmg.com

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