Stephen >I have a 10 minute statspack report from a busy time period, and have seen >that buffer busy waits >were the highest wait events. Would I be correct to then look at the Latch >Miss Source at the >largest sleeps? IMHO before doing further analysis you should know: - what kind of blocks are experiencing the buffer busy waits - the reason code for the wait According to this information different actions are available. HTH Chris -- //www.freelists.org/webpage/oracle-l