Physical Reads and Writes

From: Bill Zakrzewski <bill_at_intactus.com>
Date: Fri, 28 Aug 2009 15:49:08 -0400
Message-Id: <5E9DE2AF-EE8D-4AE6-8851-12B29A4BB6E6_at_intactus.com>

I am trying to determine how many physical reads and physical writes are happening on one of my database servers. I tried using the "sar - b" command, but the physical reads and writes always appears to be zero.

16:37:26 bread/s lread/s %rcache bwrit/s lwrit/s %wcache pread/s pwrit/s
16:37:31       1    3768     100       6    1508     100       0       0
16:37:36       1    3812     100       4    1546     100       0       0
16:37:41       1    3923     100       2    1589     100       0       0
16:37:46       1    3751     100       7    1522     100       0       0

Environment:
Sun Solaris 9
Oracle 9.2.0.8.0

Any suggestions?

Thanks
Bill

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Received on Fri Aug 28 2009 - 14:49:08 CDT