>Yes I have a key field in master table (the same as in the temp table).

Al Selects should do the job, The same thing with one select:
(much NVL's here :-)

CREATE CURSOR Test  (Fld1 Int, Fld2 Char(10))
CREATE CURSOR Test1 (Fld1 Int, Fld2 Char(10))
INSERT INTO Test VALUES (1, [Val 1])
INSERT INTO Test VALUES (2, [Val 2])
INSERT INTO Test VALUES (3, [Val 3])

INSERT INTO Test1 VALUES (1, [Val 1])
INSERT INTO Test1 VALUES (4, [Val 4])
INSERT INTO Test1 VALUES (3, [Val 3])

SELECT NVL(Test.Fld1, Test1.Fld1) AS Fld1,;
       NVL(Test.Fld2, Test1.Fld2) AS Fld2;
FROM Test;
FULL JOIN Test1 ON Test.Fld1 = Test1.Fld1;
WHERE Test.Fld1 IS NULL OR Test1.Fld1 IS NULL;
INTO CURSOR crsTest

SELECT crsTest
BROWSE NORMAL

(assuming that Fld1 is a key field)