RE: Should we stop analyzing?

From: Jamadagni, Rajendra <Rajendra.Jamadagni_at_espn.com>
Date: Tue, 30 Dec 2003 07:49:34 -0800
Message-ID: <F001.005DB448.20031230074934@fatcity.com>

This is slightly OT ...

Talking about exporting stats ... I do that and about 30 seconds ago finished writing a SQL that looks at a history of exported stats and displays a 7 day pattern of

rowcount changes
average row length change
allocated blocks changes

basic treand analysis should be possible from exported stats and monitoring info ... right? 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, December 30, 2003 10:24 AM To: Multiple recipients of list ORACLE-L

Makes sense, BUT...
"If the data changes A LOT you should of course re-analyze." is assuming you know when that happens. You are assuming communication between users, developers, and DBAs. Communication is my New Year's Resolution.

I would at least suggest exporting stats before changing them. Then there are all the extra problems such as retaining histograms with 8i, applications which constantly insert/delete from temporary tables (not Oracle temp tables), ...

Henry

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

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