Re: async io to fs files on HP

From: oracle <oracle_at_nightmare.com>
Date: 1997/03/06
Message-ID: <331F7126.22A7@nightmare.com>#1/1

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Rich Woods wrote:
>
> Brenda Muller wrote:
> >
> > Does anyone have any bad experiences making an Oracle server
> > use async I/O on a server which uses filesystem files rather
> > than raw devices?
> >
> > Does anyone know a reason why this wouldn't be supported by Oracle?
> >
> > TIA,
> >
> > Brenda Muller
> >
> > -------------------==== Posted via Deja News

 ====-----------------------


> >       http://www.dejanews.com/     Search, Read, Post to Usenet

> It is most definitely used (and supported) on Solaris platforms. If
> Oracle has offically told you it isn't supported on HP platforms, I
> suspect it is because it's too new, not yet reliable, not tested by
> Oracle, other reasons, etc.
> --
> Rich Woods
> Technical Field Support Specialist, Oracle Corporation, USA
> The above statements and opinions are my own and do not
> necessarily represent those of Oracle Corporation.

I do not think it is supported on HP with non raw partitions. I read a while
back in the 7.3.2 ICG for HP/UX and it stated that it was to be used for raw partions only. If you set it to true in the "init<sid>.ora" it will not use it on
non raw partions. You can prove this to yourself using glance or look to see
if /dev/async gets touched when you do write to a filesystem.

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<DT>Rich Woods wrote:

&gt;&nbsp;<BR>
&gt; Brenda Muller wrote:<BR>
&gt; &gt;<BR>
&gt; &gt; Does anyone have any bad experiences making an Oracle server<BR>
&gt; &gt; use async I/O on a server which uses filesystem files rather<BR>
&gt; &gt; than raw devices?<BR>
&gt; &gt;<BR>
&gt; &gt; Does anyone know a reason why this wouldn't be supported by Oracle?<BR>
&gt; &gt;<BR>
&gt; &gt; TIA,<BR>
&gt; &gt;<BR>
&gt; &gt; Brenda Muller<BR>
&gt; &gt;<BR>
&gt; &gt; -------------------==== Posted via Deja News ====-----------------------<BR>
&gt; &gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; http://www.dejanews.com/&nbsp;&nbsp;&nbsp;&nbsp;

Search, Read, Post to Usenet 
> It is most definitely used (and supported) on Solaris platforms.  If 
> Oracle has offically told you it isn't supported on HP platforms, I

&gt; suspect it is because it's too new, not yet reliable, not tested by<BR>
&gt; Oracle, other reasons, etc.<BR>
&gt; --<BR>
&gt; Rich Woods<BR>
&gt; Technical Field Support Specialist, Oracle Corporation, USA<BR>
&gt; The above statements and opinions are my own and do not<BR>
&gt; necessarily represent those of Oracle Corporation.<BR>

</DT>

<DT>I do not think it is supported on HP with non raw partitions.  I read a while</DT>

<DT>back in the 7.3.2 ICG for HP/UX and it stated that it was to be used for</DT>

<DT>raw partions only.  If you set it to true in the "init<sid>.ora" it will not use it on</DT>

<DT>non raw partions.  You can prove this to yourself using glance or look to see</DT>

<DT>if /dev/async gets touched when you do write to a filesystem.</DT>

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------------505D707620F821-- Received on Thu Mar 06 1997 - 00:00:00 CST