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1. Start an OpenJPA application with the following configuration properties set:

   Code Block
   xml xml
   <property name="openjpa.DataCache" value="true"/> <property name="openjpa.Instrumentation" value="jmx(Instrument='DataCache')"/>

2. Launch JConsole and provide the openjpa-tools.jar via the -pluginpath switch.

   Code Block
   > [java_home]\bin\jconsole -pluginpath [path _to _openjpa-tools.jar]

3. Select the PID which corresponds to your application.

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2. Wiki Markup
   If all goes well, at this point you should see a tab labeled DataCache-\[pu_name\]-\[n\] !screen.jpg|thumbnail,border=1!