RE: Global temporary tables with No logging

From: Goulet, Richard <Richard.Goulet_at_parexel.com>
Date: Mon, 8 Jun 2009 10:10:15 -0400
Message-ID: <23C4836D8E9C5F4280A66C0C247BC16F294FE0EC_at_US-BOS-MX011.na.pxl.int>

If these are global temp tables then their are not the cause of your increased archive log activity. Global temp tables have a default of the temp tablespace and are never logged. The reason is that once a session using a global temp table ends the table drops all of it's data & storage. Transaction preservation of global temps is per their definition. Refer to :
http://download.oracle.com/docs/cd/B28359_01/server.111/b28286/statement s_7002.htm#i2095331. It's fro 11g, but still applicable to 10g.  

You can specify nologging with the "alter table" command, but that can be overridden if the database has supplemental logging turned on as in there exists a physical standby.  

The biggest thing is to check with the application developers of provider. Some apps like PeopleSoft create "temporary" tables that are there to pass data between sessions in a batch job. If that's so, your stuck with them. If not consider rebuilding them as global temps.  

Dick Goulet
Senior Oracle DBA
PAREXEL International  

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From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of walid alkaakati Sent: Monday, June 08, 2009 8:15 AM
To: oracle-l_at_freelists.org
Subject: Global temporary tables with No logging

        Hallo list,          

        i have an application that uses about 60 Temporary tables, the problem is that each day we i have more than 500 Mb as an increase in Archive logs.          

        How can i specify No Logging option for these Temporary tables ? when i try i get a syntax error, also i have read in one blog that Global temporary tables do Not Genrate Redo, so can some one please clarify the truth ?                    

        Thank you all !

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Received on Mon Jun 08 2009 - 09:10:15 CDT