How do I collect thread dump for the Controller App Server Java process using asadmin?

[Saradhi.Potharaju]

To collect a thread dump for a Controller App Server process, use the Glassfish "asadmin" tool.

1. In the computer terminal, use the command generate-jvm-report to generate a threadump.txt file.

   • <controller_home>/appserver/glassfish/bin/asadmin -u admin --passwordfile=<controller_home>/.passwordfile  generate-jvm-report --type=thread > threaddump.txt

2. Create a series of thread dumps at regular intervals.
   • The following example would create 20 thread dumps in 60-second intervals:

   • mkdir /tmp/threaddumps

   • cd /tmp/threaddumps

   • for i in {1..20}; do /opt/AppDynamics/Controller/appserver/glassfish/bin/asadmin -u admin --passwordfile=/opt/AppDynamics/Controller/.passwordfile generate-jvm-report --type=thread > threaddump$i.txt; sleep 60; done

3. Additionally, the generate-jvm-report command can generate other types of reports including memory or summary. For more information, view Glassfish documentation.