RTFM for max DMRC on Redmond's finest.....
"Tuning" <c_armanet_at_hotmail.com> wrote in message
news:aknu9q$kqi$1_at_wanadoo.fr...
> Hello,
>
> Oracle Enterprise Edition 8.1.7, Win 2K.
>
> I've had a query which was executed with a better explain plan with RBO
than
> CBO (and much faster!)
> with stats on date, with compute option of course!; and I made some
> optimization attempts on init.ora parameters.
> Finaly, CBO worked well with parameter db_multiblock_read_count from 8K to
> 16K.
>
> Then, just for testing, I changed this parameter again, and leave it to
8K.
> So, I was quite surprised when I saw the same explain plan (and fastness)
as
> with 16K!!
>
> Any idea?
>
> Thanks.
>
> Regards,
>
> C.A.
>
>
Received on Fri Aug 30 2002 - 09:34:10 CDT
