Java Version

Any version of Java 1.6 or later should work fine, we are using 1.6.0_21. Here are our command line options:

java -server -Xms3072m -Xmx3072m -XX:NewSize=256m -XX:MaxNewSize=256m -XX:+UseParNewGC -XX:+UseConcMarkSweepGC 
     -XX:+UseCMSInitiatingOccupancyOnly -XX:+CMSConcurrentMTEnabled -XX:+CMSScavengeBeforeRemark 
     -XX:CMSInitiatingOccupancyFraction=30 
     -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintTenuringDistribution 
     -Xloggc:logs/gc.log -Djava.awt.headless=true
     -Dcom.sun.management.jmxremote -classpath <long list of jars> the.actual.Class