Good observation there Paul, I just haven't noticed... but as you quite
rightly say, direct I/O is enabled by default... I am still curious about
the AIXASYNCIO option and whether or not that can provide any advantages or
disadvantages... Hopefully I will have some findings in the very near future
and I will let you know.

Cheers

Andy Wilcox
Midrange Services
Aquila Networks Services Ltd


> -----Original Message-----
> From: Paul Ripke [SMTP:stixpjr AT BIGPOND.NET DOT AU]
> Sent: 24 April 2003 16:08
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      Re: AIX and async I/O
>
> On Thursday, Apr 24, 2003, at 19:07 Australia/Sydney, Wilcox, Andy
> wrote:
>
> > Thanks for all of your thoughts so far.... I am aware of the async I/O
> > requirements for Oracle, but never played with direct I/O. I will do
> > some
> > testing with this and see what I can find out, and post some any
> > findings
> > here for your reference.
>
> I haven't got the PDFs handy, but I have a vague recollection that
> direct I/O is enabled by default in the 5.1 server on AIX...
>
> It should provide almost all the advantages of using raw volumes, and
> IMHO, for TSM DB, log and stgpool volumes, is an excellent idea. I
> wonder
> if/when Oracle is going to support this?
>
> Cheers,
> --
> Paul Ripke
> Unix/OpenVMS/TSM/DBA
> 101 reasons why you can't find your Sysadmin:
> 68: It's 9AM. He/She is not working that late.
> -- Koos van den Hout
>


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