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Text index performance guidelines [message #380980] Wed, 14 January 2009 11:22 Go to next message
dugjason
Messages: 13
Registered: June 2008
Location: UK
Junior Member
Hi all,

I have a quick question about the performance of Oracle Text indexes:

Are there any guidelines on what the size of DEFAULT_INDEX_MEMORY should be depending on the size of your index?
I assume I have not set DEFAULT_INDEX_MEMORY high enough, as my index is still a little fragmented after rebuilding it.

I have read through all the Oracle documentation on this subject, but I did not find any recommendations for the size I should be using.

If anyone could let me know where I could find more information about this, that would be fantastic.

Thanks in advance,

Jason

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Re: Text index performance guidelines [message #380990 is a reply to message #380980] Wed, 14 January 2009 13:00 Go to previous message
Barbara Boehmer
Messages: 9104
Registered: November 2002
Location: California, USA
Senior Member
The following is an excerpt from the online documentation:

"You should aim to set the DEFAULT_INDEX_MEMORY value as high as possible, without causing paging."

from the following page:

http://download.oracle.com/docs/cd/B19306_01/text.102/b14217/aoptim.htm#sthref790

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