Re: Execution time in SHARED SERVER vs. DEDICATED SERVER (RAC 10gR2)

From: Martin Klier <>
Date: Wed, 23 Apr 2008 19:48:57 +0200
Message-ID: <>


Yong Huang schrieb:
> Execution in shared server is even faster than dedicated? Not the other way
> around?

No, shared is faster, dedicated is factors of 10 slower. Other way round I wouldn't have messed around, nobody wants to execute this statements in shared server mode - we found out about shared mode "by accident" when we tried this from our web server and it was faster there.

> What're the major wait events for the session in both cases?
90% of the time: CPU. In shared mode for seconds, in dedicated mode for hours. ADDM via Grid Control didn't find anything smelly.

Any ideas out of that? I am stumped at the moment :( Thanks

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Received on Wed Apr 23 2008 - 12:48:57 CDT

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