In addition to everybody's excellent opinions, my humble Perfmon script gathers both OS level and Oracle database session level information. In case you manage an Oracle database server, this script is useful because it combines information of top resource consumers from two sources into one log. http://yong321.freeshell.org/computer/Perfmon.html Yong Huang -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list