java.lang.NoClassDefFoundError after DT5.0 upgrade

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Question by CP M. · Mar 14, 2013 at 02:49 AM ·

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.

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Answer 1 · 2013-05-29T22:12:44Z

Answer by Joel B. · May 29, 2013 at 10:12 PM

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.

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Answer 2 · 2013-03-14T20:31:24Z

Answer by CP M. · Mar 14, 2013 at 08:31 PM

The issue went away after restart.

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Answer 3 · 2013-03-14T08:50:11Z

Answer by Günter S. · Mar 14, 2013 at 08:50 AM

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

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java.lang.NoClassDefFoundError after DT5.0 upgrade

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