No, the assumption that every index - or even non-index - read will be a "physical" IO is not one of the fallacies I talk about in my "Fallacies" presentation. Niall Litchfield wrote: > On 4/26/05, Peter Alteheld <palteheld@xxxxxxxx> wrote: > > That all said I do think that *if you are setting up a system* it is > probably sensible and entirely justifiable to set OIC to some > relatively high figure (80s or 90s) - in other words to correct one of > (Wolfgangs?) fallacies - that every index read will be a physical IO. > I suspect that setting system stats is the right thing to do instead > of setting OICA. > -- Regards Wolfgang Breitling Centrex Consulting Corporation www.centrexcc.com -- //www.freelists.org/webpage/oracle-l