RE: Operations that perform multiblock I/O and cluster factor

From: Allen, Brandon <Brandon.Allen_at_OneNeck.com>
Date: Tue, 11 Dec 2007 11:30:52 -0700
Message-ID: <04DDF147ED3A0D42B48A48A18D574C45099FFC22@NT15.oneneck.corp>

Thanks Riku. Although it's impossible to draw conclusions from this trace snippet since you didn't include the STAT lines (so it could actually be performing a FTS or FFS for all we know), we can give you the benefit of the doubt since Christian has shown us a test case with all the details.

My guess is that the p3=40 is due to the hiddden parameter setting _table_lookup_prefetch_size=40

Regards,
Brandon

-----Original Message-----

From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Riku Räsänen

I had deleted the tracefile, but I did have a script to reproduce the results.

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http://www.freelists.org/webpage/oracle-l Received on Tue Dec 11 2007 - 12:30:52 CST