No, you don't need any special options. JFS supports "setall"
setting on 9.2.0.4. The little program that I wrote in the previous
post can be used to test whether direct I/O works or not. Note that
"setall" doesn't make sense, since for the async I/O, kernel must
contain the async I/O module. Async I/O, howerever, is not a problem,
because you can always set db_writer_processes to a value > 1 and all
database writes are done bu DBWR processes. So, the thing that you
really need is direct I/O.
On 02/28/2004 02:15:19 PM, Uwe Weber wrote:
> Hi,
>
> Mladen Gogala wrote:
>
> > was a recent patch for direct I/O on NetApp. Oracle support told me
> > that if FS supports direct I/O, oracle should be capable of doing
> > direct I/O on that FS. Well, IBM JFS does support direct I/O and
> > 9.2.0.4 was capable of doing it flawlessly.
>
> Do I need a special mount option to use it?
> I cannot find anything about direct I/O or concurrent I/O in
> IBM's docs on www-124.ibm.com/jfs/.
>
> Regards,
> uwe
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Mladen Gogala
Oracle DBA
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Received on Sat Feb 28 2004 - 13:28:37 CST
