create table t
as
select rownum no, lpad(rownum, 10, '0') no2 from dual
connect by level <= 100000;

set autotrace traceonly exp;

select /*+ parallel(t) */ no, no2, rownum
from   t
order by no2;

set autotrace off;

commit;

alter session enable parallel dml;

explain plan for
update /*+ parallel(t 4) */ t set no2 = lpad(rownum, 5, '0');

@?/rdbms/admin/utlxplp
