java.lang.NoClassDefFoundError after DT5.0 upgrade
We upgraded to DT5.0 yesterday and see the following error in few of our systems:
Exception in thread java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: com/dynatrace/diagnostics/agent/introspection/webservice/WebserviceIntrospection
at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
at java.util.concurrent.FutureTask.get(FutureTask.java:83)
The agent on these servers (JVMs) is still 4.1 while DT collectors & server are using 5.0
We are in the process of restarting severs tonight and would like to confirm if the issue will be resolved after restart.
Hello,
the DT5 collector is backward compatible and should work fine a DT4.1 agent. The message you are getting is no related to the version mix.
Please let us know if the issue is still happening after the upgrade of your agents. If it is still occuring I kindly ask you to open a support ticket and attach us a system information archive.
regards,
Günter
The issue went away after restart.
I would like to add that we encountered this same error in one of our applications when we had a 4.2.0 Agent connected to a 5.5.0 Collector.
This particular application uses the IBM Sterling framework.
The error was resolved by restarting the JVM - thus upgrading the agent.
