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NESTED_TABLE_GET_REFS hint

From: Stephane Paquette <stephane.paquette_at_standardlife.ca>
Date: Thu, 13 Mar 2003 12:18:55 -0800
Message-ID: <F001.005697BF.20030313121855@fatcity.com>


Hi,

I'm currently defining an optimization strategy for a reporting environment. The reporting environment is refreshing 41 materialized views on a weekly basis.
Some of the MV take over an 1 hour to refresh.

During the MV refresh, in Statspack, I can see that the top SQL are Oracle generated SQL using the NESTED_TABLE_GET_REFS hint.

>From metalink : "If this is a DSS system, you probably have a smaller shared
pool and use import/export heavily. If so,it might be a good idea to use a bigger shared pool when doing this activity."

Anyone has more info on this.

TIA Stephane Paquette
Administrateur de bases de donnees

Database Administrator

Standard Life

www.standardlife.ca

TÚl. (514) 925-7187

stephane.paquette_at_standardlife.ca

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Author: Stephane Paquette
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Received on Thu Mar 13 2003 - 14:18:55 CST

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