RE: Simple insert - 36,000 physical reads

  • From: "Stephens, Chris" <chris_stephens@xxxxxxxxxxxx>
  • To: <oracledba.williams@xxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
  • Date: Fri, 12 Dec 2008 14:57:01 -0600



From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Dennis Williams
Sent: Friday, December 12, 2008 2:55 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: Simple insert - 36,000 physical reads




Oracle, Solaris 8


I've found a simple insert that has:

     1 execution

     2,512,102 Buffer Gets

     36,479 Physical Reads

     1 Parse call

     1 Row


This insert statement appears quite a few times in the AWR report, and
for the times I see it, the statistics are pretty close to what I've
listed. The insert just has a list of columns and a list of values. No
subqueries. There is a TO_DATE conversion on two columns.This is a real
table, not a view.


Does anyone have any suggestions of why a simple insert could cause this
much database activity?


Thanks to Brandon for suggesting awrsqrpt.sql in response to another
question. That is a great tool.


Dennis Williams

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