[0098]SQL*Plus encountered oracle error 100 while executing SQL Statement

Question

Hi,
i'm trying to delete duplicate records from a table and running following script. this script is triggered from a unix script. it successfully deletes the records but in the last throws following error message,
:[0098]SQL*Plus encountered oracle error 100 while executing SQL Statement:2:Investigation required:
can anybody please help? below is the script.
DECLARE
--CURSOR FOR DUPLICATE ROWS
CURSOR CUR_DUPLICATE_ROWS IS
Select RMS_NOTE_ID, RMS_SUMMARY_NOTE_ID, count(*) cnt from PARTY_NOTE
group by RMS_NOTE_ID,RMS_SUMMARY_NOTE_ID having count(*) > 1;
var_date PARTY_NOTE.PARTY_NOTE_CREATED_DATE%TYPE;
BEGIN
FOR DUPLICATE_ROWS_REC IN CUR_DUPLICATE_ROWS
LOOP
delete from party_note
where RMS_NOTE_ID= DUPLICATE_ROWS_REC.RMS_NOTE_ID
and RMS_SUMMARY_NOTE_ID= DUPLICATE_ROWS_REC.RMS_SUMMARY_NOTE_ID
and rowid not in (select max(rowid) from party_note
where RMS_NOTE_ID= DUPLICATE_ROWS_REC.RMS_NOTE_ID and RMS_SUMMARY_NOTE_ID= DUPLICATE_ROWS_REC.RMS_SUMMARY_NOTE_ID);
commit;
END LOOP;
EXCEPTION
WHEN NO_DATA_FOUND THEN
NULL;
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE(SQLERRM);
ROLLBACK;
END;

Answer 1

Try this:
delete party_note
where  rowid not in (select max(rowid)
                     from   party_note
                     group  by rms_note_id, rms_summary_note_id
commit;No need for cursors and loops.
And when that's completed, consider ALTERing the table to add a unique index (or even a primary key) so you'll never need to do this again.