title: How to increase max heap size in tomcat? catalina.sh has lots of references
body: <p>I'm running tomcat6, and I'm unclear if I need to set java_opts or CATALINA_OPTS?</p>
  
  <p>Also, in catalina.sh there is allot of references to CATALINA_OPTS, so I'm not sure either where I should be modifying the heap size?</p>