I have JBoss 4.2.2.GA installed on Win 2003 Server along with MySQL 5.0 and Apache 2.0. Nearly 2 weeks ago I deployed my Java application and the website went live. We had over 500,000 hits the first day and have had as many as 750,000 hits in a day since. I have also encountered numerous memory problems. The memory problems have varied from out of heap to GC out of memory. After a great deal of research I have the JVM parameter in run.conf set to: JAVA_OPTS="-Xms1024M -Xmx2048M --XX:PermSize=512m -XX:MaxPermSize=512m -XX:+UseConcMarkSweepGC -XX:+CMSPermGenSweepingEnabled -XX:+CMSClassUnloadingEnabled -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC" I am still having memory problems. If I bring up the JBoss web console it tells me I have 123M of free memory. I have monitored the service and it shows a minimum allocation of 64M of memory and never goes above 128M. I did go back and modify run.bat with the same parameters as above and the results did not change. I realize I may still need to tune the settings for proper use of the heap but I first need to see that JBoss is receiving a better allocation of space. My owner is giving me holy he## at the moment. I need to get this monster tuned so that it stops running out of memory but I can't seem to make a difference in how much space it is being allocated. What am I doing wrong here???? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4207752#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...