Works in a small table, but in a enourmos table don't......why????

Question

Hi guys, I am using Oracle 10g. One of this days I made a script to be run in sqlplus. It work very well on a table with 1000 rows, but in a table with 31000000 don't...do you know why?
declare cursor cursor_clean is
select table_A_eid
from table_A
where type = 'LOL';
counter number := 0;
cnt_num number := 0;
del_num number := 1;
begin
for r_cursor_clean in cursor_clean
loop
counter := counter + 1;
delete from table_A_version where table_A_eid in
(select table_A_eid from table_A where type = 'LOL');
delete from table_A_type where table_A_eid in
(select table_A_eid from table_A where type = 'LOL');
if counter = 100000 then counter := 0;
commit;
end if;
end loop;
commit;
while del_num != 0
loop
counter := counter + 1;
delete from table_A where type = 'LOL';
if counter = 100000 then counter := 0;
commit;
end if;
del_num := SQL%RowCount;
cnt_num := cnt_num + del_num;
end loop;
commit;
end;
Thanks a lot.

Answer 1

Hi,
there are three tables, table_A, table_A_version and table_A_type. As you can see they all have something in comun.
The main goal here, is to delete from 3 tables everything that is connected with the word 'LOL' from three tables, because LOL is garbage in my tables, that was put there, but no longer needed.
I am trying to run this differently:
declare cursor cursor_clean is
select table_A_eid
from table_A
where type = 'LOL';
counter number := 0;
cnt_num number := 0;
del_num number := 1;
begin
for r_cursor_clean in cursor_clean
loop
counter := counter + 1;
delete from table_A_version where table_A_eid in
(select table_A_eid from table_A where type = 'LOL');
if counter = 500000 then counter := 0;
commit;
end if;
end loop;
commit;
counter := 0;
for m_cursor_clean in cursor_clean
loop
counter := counter + 1;
delete from table_A_type where table_A_eid in
(select table_A_eid from table_A where type = 'LOL');
if counter = 500000 then counter := 0;
commit;
end if;
end loop;
commit;
while del_num != 0
loop
counter := counter + 1;
delete from table_A where type = 'LOL';
if counter = 500000 then counter := 0;
commit;
end if;
del_num := SQL%RowCount;
cnt_num := cnt_num + del_num;
end loop;
commit;
end;
I will try this solution.........Thanks.......