Are you having performance problems? Users complaining? What is the wait time? If it is a relatively small percentage of the total time then I'd say there is no problem. My experience has been that this is often the top event in a well running system. After all, something has to be the top wait. Keith > I am using 10.2 on linux for OLTP system. I am getting log file sync > as top event. I can not change disk or combine transactions in one or > some thing other as suggested in metalink. > > Does rman backup has any effect on this event as I see this event > going up during backup time and performance goes down the drain. > > How can I reduce this wait event? > > Thanks > > Sandeep > -- > //www.freelists.org/webpage/oracle-l > > > -- //www.freelists.org/webpage/oracle-l