topic Re: How can I generate a JavaCore dump on WebSphere Application Server ( kill -3 <PID.) using actions in Splunk AppDynamics

How can I generate a JavaCore dump on WebSphere Application Server ( kill -3
Ashley_Lewis1 — Thu, 24 Sep 2020 16:27:50 GMT

Hi,
We would like to generate a JavaCore which is similar to Thread Dumps on our WebSphere Application Servers (v8.5.5) running with the IBM JVM. I have implemented the available action of a Thread Dump to be fired if any hung threads are detected. However, the thread dump that is being captured does not have the complete information that we're looking for ( Stack Trace and full JVM related information)
The usual way the admins generate this information is by running the kill -3 <PID> command against the JVM process ID.
Is it possible to implement the same using the AppDynamics Thread Dump action?
Kind Regards,
Ashley Lewis

Re: How can I generate a JavaCore dump on WebSphere Application Server ( kill -3
Nawaz_Ali_Moha1 — Fri, 08 Jan 2021 08:28:32 GMT

Hello Ashley,
You may want to first create a Health Rule to detect the hung threads.
Then you may want to create a custom action where you can create a script to trigger the Java Core .
Follow the documentation
https://docs.appdynamics.com/display/PRO45/Build+a+Custom+Action
https://docs.appdynamics.com/display/PRO45/Remediation+Actions
Now you may want to create a policy where you can add the HR created in Health Rule Scope and use the Custom Action in Actions.