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

From: edwin devadanam <edwin_kodamala_at_yahoo.com>
Date: Wed, 8 Aug 2007 03:51:15 -0700 (PDT)
Message-ID: <867320.65476.qm@web52005.mail.re2.yahoo.com>

In one of our recently(almost a month) upgraded apps instance from 9.2.0.5 to 10.2.0.2,we left disk_async_io=true but we dont get any errors related to note:394870.1,though i believe and as discussed that HP-UX(jfs) doesnt have asynchronous I/O.

  still today its set as disk_async_io=true!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 
   

  isnt this note puts us in little confusion?    

  Regards,
  Edwin.K   

Kirtikumar Deshpande <kedeshpande_at_yahoo.com> wrote:   I am not sure, if anyone mentioned ML#394870.1. In 10.2.0.2+ on HP-UX PA-RISC - Disk Aynch I/O is enabled by default (or mistake). If /dev/async file is not found (most likely not), you will see a number of little trace files with a message stating as such. DISK_ASYNCH_IO must be manually set to FALSE to stop the generation of these trace files.

Regards,

• Kirti
  • LS Cheng wrote:

> Simulate, not AIO!
>
>
> Thanks
>
> --
> LSC
>
>
> On 8/6/07, edwin devadanam wrote:
> >
> > Cheng,
> >
> > metalink note: 47328.1 says:
> > If you set DISK_ASYNCH_IO to false, then you should also set
> > DBWR_IO_SLAVES to a value
> > other than its default of zero in order to simulate asynchronous I/O.
> >
> >
> >
> > Regards,
> > Edwin.K
> >

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Received on Wed Aug 08 2007 - 05:51:15 CDT