Procedure that just won't work (newbie)

Question

CREATE OR REPLACE PROCEDURE NODB_LOAD
AS
-------------Declare neede variables---------
t_schedule_number;
t_month;
t_year;
prev_schedule_number;
differencetable = Dt;
rowcount = 0;
DECLARE
TYPE nodb_cur IS
REF CURSOR RETURN joltsdata%ROWTYPE
BEGIN
OPEN nodbcur FOR
SELECT * FROM tempcollected
AND schedule_number = t_schedule_number
AND month = t_month,
AND year = t_year;
FETCH nodbcur into C1;
DECLARE
TYPE nodb_cur2 FOR
REF CURSOR RETURN coldata%ROWTYPE
BEGIN
OPEN nodb_cur2
SELECT * FROM joltscollected
ORDER BY schedule_number asc
     year desc
     month desc
FETCH nodb_cur2 into C2;
LOOP
FETCH C2 into joltsdata;
EXIT when C2%NOTFOUND;
t_schedule_number = t_schedule_number.schedule_number;
t_year = t_year.year;
t_month = t_month.month;
IF joltsdata.schedule_number <> prev_schedule_number THEN
rowcount = 1;
ELSE
rowcount = rowcount + 1;
/*      IF
     rowcount > 3 AND
     coldata.schedule_number <> joltsdata.schedule_number
     colddata.job_openings <> joltsdata.job_openings
     coldata.hires <> joltsdata.hires
     coldata.quits <> joltsdata.quits
     coldata.layoffs_and_discharges <> joltsdata.layoffs_and_discharges
     coldata.oth_sep <> joltsdata.oth_sep
     coldata.total_sep <> joltsdata.total_sep
     coldata.resp_code_c <> joltsdata.resp_code_c
     THEN
     SET
     Dt.schedule_number = joltsdata.schedule_number
     Dt.job_openings = joltsdata.job_openings
     Dt.hires = joltsdata.hires
     Dt.quits = joltsdata.quits
     Dt.layoffs_and_discharges = joltsdata.layoffs_and_discharges
     Dt.oth_sep = joltsdata.oth_sep
     Dt.total_sep = joltsdata.total_sep
     Dt.resp_code_c = joltsdata.resp_code_c
END IF;*\
--update c2 with c1 data close cursors end procedure. 
     FETCH coldata into joltsdata;
CLOSE C1;
CLOSE C2;
END NODB_LOAD;

Answer 1

Why so complicated?
SQL> select * from m1
  2  /
      COL1       COL2
         1         23
         2         42
SQL> select * from m2
  2  /
      COL1       COL2
         1         23
         3         69
SQL> insert into rpt_table
  2  select * from (
  3  (select 'not in m1', col1, col2 from m2
  4   minus
  5   select 'not in m1', col1, col2 from m1)
  6   union
  7  (select 'not in m2', col1, col2 from m1
  8   minus
  9   select 'not in m2', col1, col2 from m2)
10  )
11  /
2 rows created.
SQL> select * from rpt_table
  2  /
DIFF             COL1       COL2
not in m1           3         69
not in m2           2         42
SQL> Cheers, APC