Re: Why would installing Oracle 10g decrease overall disk performance?

Andreas Sheriff wrote:
> "StefanKapitza" <skapitza_at_volcanomail.com> wrote in message
> news:1125038572.907967.175410_at_g14g2000cwa.googlegroups.com...
> >
> > Wes Harrison wrote:
> > > I am installing Oracle 10g 10.2.01 on Windows Server 2003 SP1 32-bit
> edition
> > > but for some strange reason the overall performance of the disks on the
> > > server decreases after it is installed. I know this because I am using
> > > SiSoft SANDRA Pro to do a File System Benchmark before and after the
> > > installation. Before, the drive index is about 80MB/S but this
> decreases by
> > > half after Oracle is installed. If I uninstall Oracle, the drive index
> > > returns to about 80. Reinstall Oracle and it goes back down to about
> 40.
> > >
> > > No other package that I have installed on this server has had this
> effect.
> > > So I figured it must have something to do with fragmentation but the
> results
> > > are unchanged after a full defrag.
> > >
> > > What could be causing this? Is it an error in the benchmark? Does it
> have
> > > something to do with some of the Oracle processes interfering with
> SANDRA
> > > Pro? It can't be just coincidence as I have repeated the test several
> > > times.
> > >
> > > Thanks,
> > >
> > > Wes
> >
> > and what rate does a copy to dev null give ?
> >
> > regards
> >
> > Stefan Kapitza
> >
> He's using windows.
>
> --
>
> Andreas Sheriff
> Oracle 9i Certified Professional
> Oracle 10g Certified Professional
> Oracle 9i Certified PL/SQL Developer
> ----
> "If you don't eat your meat, you cannot have any pudding.
> "How can you have any pudding, if you don't eat your meat?"
>
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copy <bigfile> nul:

regards

Stefan Kapitza Received on Fri Aug 26 2005 - 02:05:36 CDT