Filesystem caching will affect Oracle's perception of IO throughput. Try a test where you can saturate the cache, you should see different results. On Fri, 25 Mar 2005 09:58:12 -0800 (PST), Sai Selvaganesan <ssaisundar@xxxxxxxxxxxxx> wrote: ... > i am facing a scenario where the IO numbers from statspack are more than what > the filer(my storage device) can handle. i would like clarifications on these > - whether statspack IO is the exact physical IOs or there is some tweaking to > this or whether this is not the right way to calculate. -- Jared Still Certifiable Oracle DBA and Part Time Perl Evangelist -- //www.freelists.org/webpage/oracle-l