Also, misses is almost twice as high as gets. I always thought that the misses were a sub-set of the gets, which should set a max to the amount of misses one could possibly get (misses <= gets). Is that correct?
I remember reading the exact meaning of GETS, MISSES etc in Steve Adam's book years ago; I don't remember the answer but I recall it wasn't perfectly intuitive. I haven't the book handy and I failed to find the detailed definition anywhere else, sorry. Anyway from a practical point of view - MISSES should be almost zero and several orders of magnitude less than GETS, whatever the definition; so what you are experiencing is definitely an issue ... hth (a little at least) Alberto -- http://www.freelists.org/webpage/oracle-l