Do you have any degree of parallelism? or is parallel degree set to default? In general, A well behaved app will perform approx the same on RAC maybe even marginally slower. A poorly behaved app will absolutely stink when moved to RAC. RAC is not a performance enhancing solution. John --- "Hameed, Amir" <Amir.Hameed@xxxxxxxxx> wrote: > Folks, > I need some help in understanding why a job is taking longer when it > is > run in multiple nodes under RAC versus a single node in RAC and with > RAC > disabled. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- //www.freelists.org/webpage/oracle-l