Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.1.1.v20100817-r8050):    org.eclipse.persistence.exceptions.DatabaseException
    Internal Exception: java.sql.SQLException: Invalid state, the Connection object is closed.
    Error Code: 0
    Call: SELECT XXXXX FROM XXXXX
	bind => [/Home/Footer/]
    Query: ReadAllQuery(name="WWW.find" referenceClass=WWW sql="SELECT XXXXX FROM XXXXX")

    public List<WWW> find(String url) {
        }
        EntityManager em = getEntityManager();
        try {
            Query q = em.createNamedQuery("WWW.find");
            q.setParameter("url", url);
            return q.getResultList();
        } finally {
            em.close();
        }
    }

<properties>
      <property name="javax.persistence.jdbc.password" value="password"/>
      <property name="javax.persistence.jdbc.user" value="user"/>
      <property name="javax.persistence.jdbc.driver" value="net.sourceforge.jtds.jdbc.Driver"/>
      <property name="javax.persistence.jdbc.url" value="jdbc:jtds:sqlserver://SERVER:1433/DB"/>
      <property name="eclipselink.ddl-generation" value="none"/>
	  <property name="eclipselink.jdbc.timeout" value="20"/>
	  <property name="eclipselink.jdbc.connections.wait-timeout" value="20"/>
	  <property name="javax.persistence.query.timeout" value="20"/>
	  <property name="eclipselink.allow-zero-id" value="true"/>
	</properties>