return new JDBCPersistenceManager(sc.getDataSource(), sc.getTransactionManager());
JDBCPersistenceManager p = new JDBCPersistenceManager(sc.getDataSource(), sc.getTransactionManager()); p.start(); return p;
   protected JDBCPersistenceManager createPM() throws Exception   {      return new JDBCPersistenceManager(sc.getDataSource(), sc.getTransactionManager());   }