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I’m running tomcat6, and I’m unclear if I need to set java_opts or CATALINA_OPTS?
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?
You can set JAVA_OPTS or CATALINA_OPTS at the top of the catalina.sh file. All the places a new value is set they ensure that it is appending to the existing values.
I prefer setting it in startup.sh instead of catalina.sh. Setting it in catalina.sh would apply to the process started by shutdown command as well.