I am wondering how *exactly* Oracle defines system statistics for A) single block read time B) multi block read time. On my system (9206) I see values 1.3ms for multi block and 2.7ms for single block. Which is strange unless multi block read time is per block as opposed to per multi-read. Thank you in advance, Laimis N. Fyrirvari/Disclaimer http://www.landsbanki.is/disclaimer -- //www.freelists.org/webpage/oracle-l