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Re: How to improve the performance of "Direct path Write"?

From: Johnson Poovathummoottil <joni_65_at_yahoo.com>
Date: Mon, 09 Jul 2001 09:46:13 -0700
Message-ID: <F001.003447D6.20010709092026@fatcity.com>

We too had a similar problem and thought that we should do something to make the sorts faster. But investigating a little deeper found the actual amount of time waited in direct path read/write was very little although there are a number waits attibuted to direct path read and write while sorting. We also tried increasing the sort_area_size, but it gave adverse performance.
Of the total time spend for the query cpu time was always above 90 percent and wait time was less than 10 %. we executed the same queries on faster cpu machines and got better results. Also parallelizing the queries helped.


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Author: Johnson Poovathummoottil
  INET: joni_65_at_yahoo.com

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Received on Mon Jul 09 2001 - 11:46:13 CDT

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