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RE: wait event puzzler

From: Wolfgang Breitling <breitliw_at_centrexcc.com>
Date: Wed, 11 Jun 2003 13:21:09 -0700
Message-ID: <F001.005AF7F5.20030611125454@fatcity.com>


Yes, 'db file sequential read' is always a single block read. It is 'db file scattered read' which is <= DB_FILE_MULTIBLOCK_READ_COUNT

At 10:35 AM 6/11/2003 -0800, you wrote:
A SINGLE block? I was convinced that it was <= DB_FILE_MULTIBLOCK_READ_COUNT blocks.
Are you sure?
Mladen Gogala
Oracle DBA
Phone:(203) 459-6855
Email:[EMAIL PROTECTED]
-----Original Message-----

Sent: Wednesday, June 11, 2003 2:19 PM
To: Multiple recipients of list ORACLE-L Dennis:

THe event 'db file sequential read' is NOT always an INDEX Scan. It is just a single block read which TYPICALLY happens during an INDEX scan. The word 'TYPICALLY' is the key here.

Best Regards,
K Gopalakrishnan
Wolfgang Breitling
Oracle7, 8, 8i, 9i OCP DBA
Centrex Consulting Corporation
http://www.centrexcc.com
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Author: Wolfgang Breitling
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