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Generating STATISTICS [message #242918]

Tue, 05 June 2007 09:04

gkrishn
Messages: 506
Registered: December 2005
Location: Putty a dark screen

Senior Member

Generating STATISTICS- Frequently generating STATISTICS,is good or bad ?Will it take long time to complete if tables have more records ?

I have never got a chance to work on this scenario, Can some one please tell me some scenarios where you had to generate statistics and how long it took to complete.Please show some light

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Re: Generating STATISTICS [message #242919 is a reply to message #242918]

Tue, 05 June 2007 09:11

harshad.gohil
Messages: 157
Registered: April 2007
Location: USA

Senior Member

It depends on number of rows in table.. indexes.. and datatype.

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Re: Generating STATISTICS [message #242942 is a reply to message #242918]

Tue, 05 June 2007 10:07

gkrishn
Messages: 506
Registered: December 2005
Location: Putty a dark screen

Senior Member

generating statistics for TABLE- will that touch all its indexes also ?

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Re: Generating STATISTICS [message #242943 is a reply to message #242942]

Tue, 05 June 2007 10:11

DreamzZ
Messages: 1666
Registered: May 2007
Location: Dreamzland

Senior Member

Read it for statistics collection.

http://download-west.oracle.com/docs/cd/B12037_01/server.101/b10752/stats.htm

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Re: Generating STATISTICS [message #242944 is a reply to message #242918]

Tue, 05 June 2007 10:15

gkrishn
Messages: 506
Registered: December 2005
Location: Putty a dark screen

Senior Member

Thanks for the link .

Also want to hear from experts on real time scenarios they had come across.Pls share if any

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Re: Generating STATISTICS [message #242949 is a reply to message #242944]

Tue, 05 June 2007 10:26

DreamzZ
Messages: 1666
Registered: May 2007
Location: Dreamzland

Senior Member

can you post your oracle version?

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Re: Generating STATISTICS [message #242959 is a reply to message #242918]

Tue, 05 June 2007 11:00

gkrishn
Messages: 506
Registered: December 2005
Location: Putty a dark screen

Senior Member

we have 8i,9i nd 10g.

my idea is to understand some scenarios in production environment ;like.... do you have 'Automatic Statistics Gathering' enabled? or how often u run statistics ...?
or do you prefer to run through DBMS job or through crontab ,etc...

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