What does the –Dcom.ibm.webshpere.alarmthreadmonitor.generate.javacore JVM argument
do?

A.
Creates a javacore dump when a thread is hung

B.
Generates a Trace message that a javacore should be generated

C.
Generates a SystemOut message that a javacore should be generated

D.
Allows the administrator to choose whether or not to generate a javacore when a hang is detected

Explanation:
If you want to monitor the activity of threads on which system alarms execute, add the following JVM generic
arguments to the server settings.
-Dcom.ibm.websphere.alarmthreadmonitor.generate.javacore
Set to any value to cause a javacore dump to be created when an hung system alarm thread is detected. The
threads section of the javacore dump can be analyzed to determine what the reported thread and other related
threads are doing.
https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/
ttrb_confighangdet.html