BACK ORDERS QUERY in Oracle Apps R12

SELECT *
  FROM oe_order_headers_all ooha,
       wsh_delivery_details wdd,
       oe_order_lines_all oola
 WHERE     ooha.header_id = oola.header_id
       AND ooha.header_id = wdd.source_header_id
       AND wdd.released_status = 'B'
       AND NOT EXISTS
                  (SELECT 1
                     FROM wsh_delivery_details wdd1
                    WHERE     wdd1.released_status != 'B'
                          AND wdd1.source_header_id = ooha.header_id);