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

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 Received on Fri Aug 26 2005 - 01:42:52 CDT