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_at_oneneck.com> 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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