jpa/cachecoordination/src/META-INF/persistence.xml

<?xml version="1.0" encoding="UTF-8" ?>
<persistence xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
             version="2.0" xmlns="http://java.sun.com/xml/ns/persistence">
    <persistence-unit name="employee" transaction-type="JTA">
        <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
        <jta-data-source>jdbc/EmployeeDS</jta-data-source>
        <properties>
            <!-- Configure the JEE server platform. -->
            <property name="eclipselink.target-server" value="weblogic" />

            <!-- The database platform is auto-detected by default,
                 if you want to set a specific platform this can be set. -->
            <!-- property name=""eclipselink.target-database" value="Oracle" / -->

            <!-- Configure cache size. -->
            <!--
                Full is used for this example to ensure nothing garbage collects,
                but is not a good practice in general Soft, SoftCache or HardCache are best
            -->
            <property name="eclipselink.cache.type.default" value="Full" />
            <property name="eclipselink.cache.size.default" value="1000" />

            <property name="eclipselink.cache.coordination.protocol" value="jms" />
            <property name="eclipselink.cache.coordination.jms.topic" value="jms/EmployeeTopic" />
            <property name="eclipselink.cache.coordination.jms.factory" value="jms/EmployeeTopicConnectionFactory" />
            <!-- localhost may not work, full machine name or ip my be required, as is required if running on multiple machines -->
            <property name="eclipselink.cache.coordination.jms.host" value="t3://localhost:7021/" />
            <!-- user/password should not be required -->
            <!--property name="eclipselink.cache.coordination.jndi.user" value="weblogic" />
            <property name="eclipselink.cache.coordination.jndi.password" value="welcome1" /-->

            <!-- Configure database to be created on startup if not already existing. -->
            <property name="eclipselink.ddl-generation" value="create-tables" />

            <!-- Configure logging for demonstration. -->
            <property name="eclipselink.logging.logger" value="DefaultLogger" />
            <property name="eclipselink.logging.level" value="FINEST" />
        </properties>
    </persistence-unit>
</persistence>