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RE: Analyze

From: Shevtsov, Eduard <EShevtsov_at_flagship.ru>
Date: Mon, 16 Jul 2001 06:18:51 -0700
Message-ID: <F001.0034AE33.20010716062523@fatcity.com>

It seems you use 'compute' option of analyze command. Try to use 'estimate' with about 45% sample of data and then check whether the plans are still unchanged. This solution may decrease the time you spend on analyzing but usually keeps the precision of statistics.

Regards,
Ed

>
>
> 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
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Smith, Ron L.
> INET: rlsmith_at_kmg.com
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Shevtsov, Eduard
  INET: EShevtsov_at_flagship.ru

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
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Received on Mon Jul 16 2001 - 08:18:51 CDT

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