Re: memory problem - oracle 10203 on HPUX
- From: "Ujang Jaenudin" <ujang.jaenudin@xxxxxxxxx>
- To: vnr1995 <vnr1995@xxxxxxxxx>
- Date: Mon, 21 Jan 2008 16:01:42 +0700
hi,
I got the memory report from glance and grid control host performance report.
from those tools indicate the same number.
looking fsflush for hp-ux.....
regards
ujang
On Jan 21, 2008 2:17 PM, vnr1995 <vnr1995@xxxxxxxxx> wrote:
> If this is a fresh installation, and if you have faced this problem
> right away after being brought into production, I have few questions:
>
> How did you know that the OS is using 80 to 90 percent of the memory
> is being used? Many commands dealing memory management are misleading:
> for instance, prstat on solaris is downright misleading; tuning based
> on prstat is downright suicidal. I don't know about hpux; on solaris,
> one can get memory usage by interacting with kernel debugger, smth
> like
> echo "::memstat" | mdb -k
>
> There is another thing you need to look at: how frequently fsflush
> daemon is being run? There is a kernel parameter (in solaris) that
> dictates this frequency: autoup. Given you got 38 GB memory, try to
> run the fsflush daemon less often, so that the paging activity gets
> reduced.
>
>
>
>
>
>
> On Jan 19, 2008 7:36 PM, Ujang Jaenudin <ujang.jaenudin@xxxxxxxxx> wrote:
> > folks,
> >
> > I have a machine (RAC configuration) 10.2.0.4 on HPUX - PARISC.
> > in a node I have 38GB physical memory, 8 processors.
> > the machine could not run with asynchronous IO, so I set io slave to
> > 8, and dbwr to 1.
>
--
regards
ujang
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