I had the same problem on Sun, I found this guy's tools in Perl (specifically prusage). I doubt they work for RedHat but I presume the same type of stuff must be out there. Have you checked sourceforge? http://users.tpg.com.au/adsln4yb/ On 2/14/06, Henry Poras <henry@xxxxxxxxxxxxxxx> wrote: > Thanks Allen. I was thinking about at the OS level. Two reasons for this. > One, if there is some non-database process out there (rman, exp, OS tool, > ...), I don't skip it. Secondly, if it is a database issue, I can tell > quickly if most of the IO is from the top 1,2,3,... processes, and then > focus on those with the db tools. > > Henry > > -- //www.freelists.org/webpage/oracle-l