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MQSeries.net Forum Index » General Discussion » ClassNotFoundException: WMQFFSTInfo$ConcurrentWeakHashSet$1

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Noisette
PostPosted: Thu Dec 13, 2012 1:49 pm    Post subject: ClassNotFoundException: WMQFFSTInfo$ConcurrentWeakHashSet$1 Reply with quote

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Joined: 20 Nov 2012
Posts: 13
Hello,

I have an MQ version 7.5 installation on a server which is all working well. My issue is that I am trying to deploy a Java application to a Weblogic server (v10.3.6.0) which does some work with the MQ installation. I am getting the following error when I deploy the application:

java.lang.NoClassDefFoundError: com/ibm/msg/client/wmq/common/internal/WMQFFSTInfo$ConcurrentWeakHashSet$1

I have found that if I completely restart the application server in the Weblogic cluster, the application will start OK. When the application server is not restarted and I try and deploy the Java application, I get the error above.

I've had a look on the Net but can't find any other mention of this issue. Does the message indicate that I need to install some MQ client libraries upon the Weblogic server or there is some kind of caching going on?

Thanks in advance for any assistance.
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Noisette
PostPosted: Tue Dec 18, 2012 5:45 pm    Post subject: Reply with quote

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Joined: 20 Nov 2012
Posts: 13
Solved: we had to add missing the following jars to WebLogic: dhbcore.jar and com.ibm.mqjms.jar.
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