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How to calculate the exact cost of a physical read

From: Garry Robinson <garry_robinson_at_slc.co.uk>
Date: 9 Aug 2001 05:22:53 -0700
Message-ID: <55fd501c.0108090422.2ffd69b2@posting.google.com> 






Does anyone know how to calculate the average duration of a physical
block read from disk?


Can V$SYSTEM_EVENT.AVERAGE_WAIT_TIME for db_file_sequential_read event
be relied on to represent the average time taken to transfer a random
block from disk to the buffer cache?
Received on Thu Aug 09 2001 - 07:22:53 CDT












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