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1. On the tomcat server, do the following:
   
   a.  Open the firefwall to allow connections over the jmx port
   
   b.  Make the following directories
       mkdir -p /home/tomcat/.jvisualvm/7u6
       chown -R tomcat:tomcat /home/tomcat
   
   c.  Add the following java options to tomcat in setenv.sh
       -Dcom.sun.management.jmxremote
       -Dcom.sun.management.jmxremote.port=9004
       -Dcom.sun.management.jmxremote.ssl=false
       -Dcom.sun.management.jmxremote.authenticate=false
       
   d.  Restart tomcat
   
   e.  In order to get a memory and heap dump properly, you should start JVisualVM as the user that started the JVM process you will attached to.  In this case 'tomcat'.
       xhost +
       cd /opt/apps/java/java/bin
       su -c "./jvisualvm"
       
   f.  You should now be able to capture a heap dump from one of the tabs in the form of an hprof file which can be used with MAT in eclipse.