code: public void doFinally() {
  	if (conn != null && !isPartOfTransaction) {
  	    try {
  		conn.close();
  	    } catch (SQLException e) {
  		// Not much we can do
  	    }
  	}
  
  	parameters = null;
  	conn = null;
      }
docs: Close the <code>Connection</code>, unless this action is used
  as part of a transaction.