Thanks to all (specially Ingrid) for your suggestions and help, the problem were caused by some machines that had the 8 client (there was one with even 7 client); now cpu average is 1.5 - 2.5% on pic hours. Regards David Ramírez Reyes Profesión: Padre de Familia On 26 September 2013 11:26, Andy Klock <andy@xxxxxxxxxxxxxxx> wrote: > Some days, my fingers can't distinguish CTRL-S from CTRL-V... > > As I was saying... > > Tanel's sw.sql is very slick: > > http://blog.tanelpoder.com/files/scripts/sw.sql > > and the info in here: > http://blog.tanelpoder.com/2008/08/07/the-simplest-query-for-checking-whats-happening-in-a-database/ > > and Snapper too. http://blog.tanelpoder.com/files/scripts/snapper.sql once > you know the SIDs in question. > > Good luck. > > > > On Thu, Sep 26, 2013 at 12:23 PM, Andy Klock <andy@xxxxxxxxxxxxxxx> wrote: > >> Have you tried determining what those processes that you found with MS >> Process Explorer are actually doing? I would start with Tanel's sw.sql: >> >> >> -- //www.freelists.org/webpage/oracle-l