Re: Async_io set up HP-UX for 10g Instances(these are apps instances)

Read *Note:139272.1*

and you can see as LSC already pointed out

on HP-UX,
aio is *only* possible on a raw device. Put in another way, aio *cannot* be used on a filesystem.

Quite clear

On 8/2/07, edwin devadanam <edwin_kodamala_at_yahoo.com> wrote:
>
> Cheng,
>
> the raw files system is for solaris server.
>
> We are using normal Filesystem.
> Already Async io is set in couple of other HP-UX servers........
>
> on what basis can we change disk_asynch_io = FALSE to
> disk_asynch_io = TRUE (PLease see below information for clarity of my
> requirement)
>
> Any docs pertaining to disk_asynch_io = TRUE and its Advantages
>
> Thanks,
> Edwin.K
>
> *LS Cheng <exriscer_at_gmail.com>* wrote:
>
> You need to setup raw devices to use AIO in HP-UX. No chance if you are
> using vxfs.
>
> Thanks
>
> --
> LSC
>
> On 8/2/07, edwin devadanam < edwin_kodamala_at_yahoo.com> wrote:
> >
> > Hi
> >
> > We have this setup
> > db_writer_processes = 4 disk_asynch_io = false
> >
> > I have doubts whether i can set the below on....
> > please suggest advantages and disadvantages of below setting.......on
> > HP-UX
> > disk_asynch_io = TRUE
> > tape_asynch_io = TRUE
> >
> > am unclear mainly about
> > disk_asynch_io,db_writer_processes,DBWR_IO_SLAVES
> >
> > Any help would be appreciated.
> >
> > Regards,
> > Edwin.K
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