plsql更新超級大庫

declare
  cursor c is
    select rowid from id_card_no;
begin
  for v_emp in c loop
    update id_card_no icn set icn.fixed = '' where icn.rowid = v_emp.rowid;
    update id_card_no icn set icn.fixed = regexp_substr(icn.id_card_no,'\d{18}|\d{17}x|\d{17}X|\d{15}') where icn.rowid = v_emp.rowid;
    commit;
  end loop;
end;