Oracle-L: RE: Schedule Analyze using DBMS

From: Jamadagni, Rajendra <Rajendra.Jamadagni_at_espn.com>
Date: Tue, 03 Jun 2003 08:59:56 -0800
Message-ID: <F001.005A90AE.20030603085956@fatcity.com>

We don't "analyze" schema, we use dbms_stats ...

I wrote a package that analyzes everything using dbms_stats and (for my instance) it runs in 10 parallel streams. It splits all the tables in 10 streams so that all of them take approximately same amount of time. This package captures the time it takes to analyze each table, everyday and balances the table among 10 parallel streams.

I prefer to use cron, but you can use it with dbms_job as well.

Currently it does only tables (and cascades to indexes automatically). We don't deal with partitions right now, so that needs to be added. After a certain number of rows, it collects stats in parallel too. I am currently working on interfacing it with dba_tab_modifications ... so the logic will decide if the table changes are say < 5%, skip the table from stats collections.

Raj

Rajendra dot Jamadagni at nospamespn dot com All Views expressed in this email are strictly personal. QOTD: Any clod can have facts, having an opinion is an art !

-----Original Message-----
Sent: Tuesday, June 03, 2003 11:05 AM
To: Multiple recipients of list ORACLE-L

Thanks Mark - That is exactly what I was just getting ready to write!

Dennis Williams
DBA, 80%OCP, 100% DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com

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Author: Jamadagni, Rajendra
  INET: Rajendra.Jamadagni_at_espn.com

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Received on Tue Jun 03 2003 - 11:59:56 CDT

RE: Schedule Analyze using DBMS_STATS ???