In Oracle7 (yes, some of us still use it I'm afraid) I understand that DB_WRITERS should not be > 2 per physical disk spindle. I assume this recommendation applies only to disks that house Oracle datafiles? E.g. If I have a box with 8 disks each with 1 spindle, but my db only has datafiles stored on hd1 and hd2, I shouldn't set DB_WRITERS any higher than 4? If anyone can rember this far back their advise would be much appreciated.