<resource-ref> <description>Database Connection Pool</description> <res-ref-name>jdbc/MyDB</res-ref-name> <res-type>javax.sql.DataSource</res-type> <res-auth>Container</res-auth> </resource-ref> Context initContext = new InitialContext(); Context envContext = (Context) initContext.lookup("java:/comp/env"); envContext.bind("jdbc/MyDB", dataSource); Context initContext = new InitialContext(); Context envContext = (Context) initContext.lookup("java:/comp/env"); DataSource dataSource = (DataSource) envContext.lookup("jdbc/MyDB"); Connection connection = dataSource.getConnection();