Best way of delete records??

Question

Hi,
I'm having a performance problem, i need to del 8 million records from a table that as more then 50 millions. The table has partitions by the column that is used in the delete where clause. I created the following procedure to do it:
procedure del_pay(v_year in number, v_month in number) is
cursor c_pay is
select rowid from payments
where am_integ = ((v_year * 100) + v_month);
x number;
y number;
TYPE t_rowid IS TABLE OF VARCHAR2(100)
index by binary_integer;
tab_rowid t_rowid;
begin
open c_pay;
FETCH c_pay BULK COLLECT INTO TAB_ROWID;
close c_pay;
y := tab_rowid.FIRST;
x := 50000;
loop
exit when x > tab_rowid.last;
FORALL I IN y..x
delete from payments d
where d.rowid = tab_rowid(i);
commit;
y := x + 1;
x := x + 50000;
END LOOP;
FORALL I IN y..tab_rowid.last
delete from payments d
where d.rowid = tab_rowid(i);
tab_rowid.delete;
dbms_session.free_unused_user_memory;
commit;
end del_pay;
is there other way of mking this to run faster?
thanks for your help.

Answer 1

I think you could try using a DELETE statement instead of going through a cursor loop. Check if an INDEXES are present, if possible try to DISABLE those indexes.
Thanks