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

  • From: amonte <ax.mount@xxxxxxxxx>
  • To: edwin_kodamala@xxxxxxxxx
  • Date: Thu, 2 Aug 2007 16:36:50 +0200

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@xxxxxxxxx> 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@xxxxxxxxx>* 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@xxxxxxxxx> 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
> >  ------------------------------
> > Shape Yahoo! in your own image. Join our Network Research Panel 
> > today!<http://us.rd.yahoo.com/evt=48517/*http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7>
> >
>
>
> ------------------------------
> Choose the right car based on your needs. Check out Yahoo! Autos new Car
> Finder 
> tool.<http://us.rd.yahoo.com/evt=48518/*http://autos.yahoo.com/carfinder/;_ylc=X3oDMTE3NWsyMDd2BF9TAzk3MTA3MDc2BHNlYwNtYWlsdGFncwRzbGsDY2FyLWZpbmRlcg--+>
>
>

Other related posts: