Yes, the persistence.xml does specify a unit name. Here it is | <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 http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0"> | <persistence-unit name="portaltest"> | <!-- provider must be explicitly stated for Java SE, but not Java EE--> | | <!-- javax.persistence.EntityManagerFactory --> | | <provider>org.hibernate.ejb.HibernatePersistence</provider> | | <!-- I don't think that we need this for external testing --> | <!-- <jta-data-source>java:/DefaultDS</jta-data-source> --> | | <class>myapp.OutputParameter</class> | <class>myapp.DomainObject</class> | <class>myapp.Fault</class> | <class>myapp.Service</class> | <class>myapp.InputParameter</class> | <class>myapp.PointOfContact</class> | <class>myapp.Operation</class> | <class>myapp.ResearchCenter</class> | | <properties> | | <property name="hibernate.hbm2ddl.auto" value="update"/> | <!-- | <property name="hibernate.hbm2ddl.auto" value="update"/> | <property name="hibernate.hbm2ddl.auto" value="create-drop"/> | --> | | <!-- DB connection properties --> | <!-- <property name="jdbc.driver" value="org.hsqldb.jdbcDriver" /> --> | <!-- <property name="jdbc.url" value="jdbc:hsqldb:hsql://localhost" /> --> | <!-- <property name="jdbc.user" value="sa" /> --> | <!-- <property name="jdbc.password" value="" /> --> | | <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect" /> | <property name="hibernate.connection.driver_class" value="org.hsqldb.jdbcDriver" /> | <property name="hibernate.connection.url" value="jdbc:hsqldb:hsql://localhost" /> | <property name="hibernate.connection.user" value="sa" /> | <property name="hibernate.connection.password" value="" /> | </properties> | </persistence-unit> | </persistence> | | <!-- | vim: sw=4:ts=4:et:sm:ai:textwidth=70:nohlsearch:syntax=off | --> | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3987709#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...