Re: db_file_multiblock_read_count causing full scans to takelonger?

Per HJR's doc, I had set it to something like 800 and it got resized
to 128.  I then did the individual 10046 traces which seemed to
confirm that.  But alas that didn't turn out to work so well.

Paul, my SA says "64K from what I can guess on my own, block size is
1K on the FS (for now)"

Don.

On 12/19/06, Allen, Brandon <Brandon.Allen@xxxxxxxxxxx> wrote:

Am I missing something, or isn't it best to just leave this parameter
unset (default) in 10.2, in which case Oracle will automatically adjust
it to the max io size of your OS?  Along with computing system stats on
a typical workload so you have an accurate mbrc, you should get the best
of both worlds - accurate costing and optimized sequential scans, right?

I have it unset on my 10.2 AIX 5.3 system and it has defaulted to 128
with an 8k block size (1MB).

Regards,
Brandon

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