sizing sort_area_size

From: <rgaffuri_at_cox.net>
Date: Thu, 18 Sep 2003 11:09:42 -0800
Message-ID: <F001.005D0662.20030918110942@fatcity.com>

I have been doing some alter sessions to improve performance of gigabyte sized 'minus' operations. How do I tell if this is helping other than completion time?

I believe that if LIOs to PIOs ratio improves with the SAME query then sort_area_size has helped right?(notice Im not trying to improve my cache/hit ratio).

I get this from v$sess_io.

how do I tell how much temp tablespace my session uses? I cant find a statistic for it? I see that I used up all my PGA since PGA size and PGA max size are equal in v$sesstat.

anything else I can look at?

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Author: <rgaffuri_at_cox.net
  INET: rgaffuri_at_cox.net

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