RE: ORACLE automatic update statistics better??

  • From: "Powell, Mark" <mark.powell2@xxxxxx>
  • To: oracle-l <oracle-l@xxxxxxxxxxxxx>
  • Date: Thu, 19 Aug 2010 13:40:41 +0000

Considering manually generating statistics for these tables using a sample size 
then locking the statistics so the Oracle provided job does not regenerate 
statistics for these tables.  You can write a script that unlocks the 
statistics, re-calculates the statistics, and relocks the statistics using 
parameters you have determined work better for these specific tables.


________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On 
Behalf Of Sandra Becker
Sent: Wednesday, August 18, 2010 4:58 PM
To: oracle-l
Subject: Re: ORACLE automatic update statistics better??


We ran into problems with the auto stats job on a few of our large tables that 
can grow by 10 percent of more in a day or two.  It takes several hours to get 
the stats on the largest table and caused significant performance problems for 
our customers.

--
Sandy
Transzap, Inc.

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