Re: Async writes or multiple DBWRs?

We are running AIX 4.2.1 and I'm told you can't use async i/o unless you use raw devices. I think this is an AIX limitation. So, for one of our databases (7.3.3) we're using JFS and dbwriters and for the other one we're using raw devices with async i/o enabled.

Rob.

tgp_at_mci2000.com wrote in message <6kh8kv$9td$1_at_nnrp1.dejanews.com>...
>
>
>I'm looking for a definitive answer to the
>question: Given that I am running Oracle on AIX
>4.2.1, with all Oracle database files on JFS, and
>not on raw partitions, should I use async I/O, or
>multiple DBWR processes?
>
>I have found scattered references to the two
>options in various books and manuals, and
>concluded that I should use async writes. Then an
>Oracle consultant guy I know who seems intelligent
>(but you know consultants!) said he "thinks he
>read somewhere" that you shouldn't use async
>writes on JFS files, but only on raw partitions.
>
>Can someone give me a convincing argument for
>using one or the other, or point me to holy Oracle
>documentation that answers the question?
>
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Received on Wed May 27 1998 - 14:27:19 CDT