Missing expected Frontends.
This can occur in any 10.x Java Agent.
Conflict with the enabled BRTM extension missing a required file. Having the brtm.pbd uncommented within the agent directives enables tracers that require the file BrtmExt.jar. When this file is missing with brtm.pbd called as a directive, no Frontends will be seen.
Note: The brtm.pbd is typically called from the appserver_tracelevel.pbl. For example, for a tomcat agent it would be tomcat_typical.pbl, tomcat_full.pbl and by default it is commented out.
Assuming that brtm.pbd is called.
1. Stop the agent.
2. Navigate to the AGENT INSTALL DIR\core\ext
3. Copy over BrtmExt.jar ( this jar file is typically located under AGENT INSTALL DIR\examples\APM\BRTM\ext
4. Start the agent.
This behavior will only be present on 10.x Java Agents.