On 8/23/05, Ranko Mosic <ranko.mosic@xxxxxxxxx> wrote: > so there is no precise control over > file location on disk. Why separate objects into tablespaces/datafiles > when you don't know where read/write is going to end up anyway ? > > Ranko. I agree that separating indexes and tables to avoid head contention is not worthwhile in a RAID environment. However, there are other good reasons to do so. It makes object management and recovery much easier. "Hot spots" --- I've heard that some types of hot spots can be avoided by setting up indexes in descending order. I'm not sure that I followed the agrument completely and if anyone would like to jump in here with an explanation I'd love to read it. -- //www.freelists.org/webpage/oracle-l