JVM Performance Tuning, Monitoring and Troubleshooting

Troubleshooting Java 1.6 JVM for Memory, GC, Error and etc
http://www.oracle.com/technetwork/java/javase/tools-141261.html

Troubleshoot Memory Leaks:
http://www.oracle.com/technetwork/java/javase/memleaks-137499.html


http://www.oracle.com/technetwork/java/javase/memleaks-137499.html#gcaql


Garbage Collection (GC) Tuning
http://www.oracle.com/technetwork/java/javase/gc-tuning-6-140523.html