This article talks about using the appropriate Java parameters when starting an APM Websphere agent.
After adding the Agent parameters for Introscope Websphere agent 10.x in the Liberty server jvm.options file, the agent fails to start or gives inconsistent results such as working for a week and then stopping, saying it is connecting to the manager. However, the manager never logs the connection and the Autoprobe never completes.
APM Agent and EM version 10.x. Websphere Version 8.5.x
Turn off off the shared class cache. (Add java option -Xshareclasses:none) to your startup parameters and restart the agent.