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server upgrade - oracle changes [message #156993]

Mon, 30 January 2006 09:42

alanm
Messages: 284
Registered: March 2005

Senior Member

Hi,
not sure if this is the correct forum but here goes anyway.

we are currently in the process of upgrading our IBM server. It has 4 processors and 6 gb ram. the upgrade is to 8GB of ram and 6 processors. We have an oracle instance whose SGA= 2GB.

currently the system is maxed out if you look at SAR. the oracle instance is suffering a performance hit. this upgrade is (hopefully a quick fix). what oracle parameters need changing to take advantage of this extra RAM and CPUs.

btw I am also running in parrallel to this a look at badly performing sql scripts.

regards

Alan.

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Re: server upgrade - oracle changes [message #157097 is a reply to message #156993]

Tue, 31 January 2006 05:32

contactkeval
Messages: 23
Registered: October 2005

Junior Member

Although its not a straight answer to your question, I recommend you to go thru following article. Its very important to address actual issue rather than looking for quick fixes.

http://www.hotsos.com/e-library/abstract.php?id=24

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Re: server upgrade - oracle changes [message #157281 is a reply to message #157097]

Wed, 01 February 2006 07:04

alanm
Messages: 284
Registered: March 2005

Senior Member

Hi,
Thats a good article for questioning CPUs but what about extra RAM? If physical I/O imoved to memory by icreasing the SGA that must be good. Again can anyone suggest what oracle parameters need to change in order to get the best benefit out of the extra RAM.

regards

Alan

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