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  Coherence 3.4 User Guide
  Remote Management NPE
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Added by Everett Williams, last edited by Everett Williams on Sep 23, 2008  (view change)

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Symptoms

When starting a coherence node with the system property

-Dtangosol.coherence.management.remote=true

The following exception occurs:

java.lang.NullPointerException
       at java.io.File.<init>(Unknown Source)
       at com.tangosol.coherence.reporter.ReportBatch.getOutputPath(ReportBatch.java:330)
       at com.tangosol.coherence.component.net.management.model.localModel.ReporterModel.getOutputPath(ReporterModel.CDB:1)
       at com.tangosol.coherence.component.net.management.model.localModel.ReporterModel.writeExternal(ReporterModel.CDB:11)
       ...

Solutions

On Java 1.5 add the system property:

-Dtangosol.coherence.management=local-only

On java 1.4 add the system property:

-Dtangosol.coherence.management=local-only

and add Java(TM) Management Extension (JMX) 1.2.1 to the classpath.

The following libraries need to be included in the classpath:
jmxri.jar
jmxremote.jar
jmx.jar