To add further color, latch contention can be a symptom of long CPU run queues, not just high processor utilization. Often times its the waiting (and holding) that is problematic. On Thu, Nov 19, 2009 at 8:52 PM, Tanel Poder <tanel@xxxxxxxxxx> wrote: > Note that latch contention can also just be a symptom of CPU starvation, so > if you're running at max physical CPU capacity you should fix that first. -- Regards, Greg Rahn http://structureddata.org -- //www.freelists.org/webpage/oracle-l