RE: db_file_multiblock_read_count causing full scans to take longer?

  • From: "Allen, Brandon" <Brandon.Allen@xxxxxxxxxxx>
  • To: <Christian.Antognini@xxxxxxxxxxxx>, "Don Seiler" <don@xxxxxxxxx>
  • Date: Tue, 19 Dec 2006 13:00:50 -0700

Hi Christian, 

By flushing the buffer cache before your testing, aren't you going to be
testing and optimizing based on an unrealistic scenario?  Why tune for
all blocks being uncached if that will not be the typical case?

Thanks,
Brandon


-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Christian Antognini

Therefore, to find the best db_file_multiblock_read_count, it makes
sense to flush the buffer cache before each FTS. 



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