jpa/eclipselink.jpa.test/resource/eclipselink-extensibility-model/server/persistence.xml

<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence persistence_1_0.xsd" version="1.0">
    <persistence-unit name="%%default%%" transaction-type="%%transaction-type%%">
        <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
        <%%datasource-type%%>%%data-source-name%%</%%datasource-type%%>
        <exclude-unlisted-classes>false</exclude-unlisted-classes>
        <properties>
            <property name="eclipselink.ddl-generation" value="create-or-extend-tables"/>
            <property name="eclipselink.metadata-source.xml.file" value="extension.xml"/>
            <property name="eclipselink.metadata-source" value="XML"/>
            <property name="eclipselink.weaving" value="%%server-weaving%%"/>
            <property name="eclipselink.target-server" value="%%server-platform%%"/>
            <property name="eclipselink.target-database" value="%%database-platform%%"/>
            <property name="eclipselink.validate-existence" value="true"/>
            <property name="eclipselink.cache.shared.default" value="false"/>
        </properties>
    </persistence-unit>
</persistence>