Suggestions for finding a memory leak in a web application running in Apache Tomcat

Question

I've got an Axis2 web service that just fell over on a client site it's throwing the following exception: java.lang.OutOfMemoryError: unable to create new native thread

I'm just pulling the logs off the site but in the interim I was wondering if anyone knew of any monitoring tools I could use to find a memory leak in a web application running in Tomcat.

Answer 1

Make a heap dump, and analyse it with Eclipse Memory Analyzer.

Answer 2

Try VisualVM.