The method of deleting data in large quantities in Oracle

Write a loop to delete the process.
create or replace procedure delBigTab(p_TableName in varchar2,p_Condition in varchar2,p_Count in varchar2)
as
pragma autonomous_transaction;
n_delete number:=0;
begin
while 1=1 loop
EXECUTE IMMEDIATE
'delete from '||p_TableName||' where '||p_Condition||' and rownum < = :10000'
USING p_Count;
if SQL%NOTFOUND then
exit;
else
n_delete:=n_delete + SQL%ROWCOUNT;
end if;
commit;
end loop;
commit;
DBMS_OUTPUT.PUT_LINE('Finished!');
DBMS_OUTPUT.PUT_LINE('Totally '||to_char(n_delete)||' records deleted!');
end delBigTab;
Call:
SQL > set timing on
SQL > exec delBigTab('HS_DLF_DOWNLOG_HISTORY','NUMDLFLOGGUID < 11100000','10000');
PL/SQL procedure successfully completed.
Elapsed: 00:00:18.54
The method is good, but I still find it too slow to use in a 100 million level database. Even 1 bit of data seems to be deleted slowly.