Re:consistent gets

From: <dgoulet_at_vicr.com>
Date: Mon, 6 Nov 2000 09:46:26 -0500
Message-Id: <10672.121203@fatcity.com>

Lots of consistent gets without a lot of disk reads would indicate a query that is running against a table that is undergoing lots of change at the same time. Your basically dealing with a situation where Oracle is applying rollback information to the table to reproduce a consistent view of the data from the point where the query started.

Dick Goulet

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Subject: consistent gets
Author: nlzanen1_at_ey.nl
Date: 11/6/00 6:10 AM

Hi All,

I have an I/O bound sytem here.

One querry that gets executed many times per day has a lot of consistent gets (17000)
I can easily change this to a much lower value (13) but it seems to make the querry slower (?)
This Querry does not have disk reads

What is exactly consistent gets (??)
Does this affect the I/O in a big way or not (no disk reads would suggest no difference)

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Received on Mon Nov 06 2000 - 08:46:26 CST