SQL> CREATE OR REPLACE TYPE typ_arr AS TABLE OF VARCHAR2(10);
  2  /

Type created.

SQL>
SQL> DECLARE
  2    v_arr       typ_arr := typ_arr('C', 'B', 'E', 'D');
  3    v_arr_sort  typ_arr;
  4  BEGIN
  5    select cast(multiset(
  6                  select * from table(v_arr)
  7                  order by 1) as typ_arr)
  8    into v_arr_sort from dual;
  9
 10    for i_idx in v_arr_sort.first..v_arr_sort.last
 11    loop
 12      dbms_output.put_line(v_arr_sort(i_idx));
 13    end loop;
 14  END;
 15  /
B
C
D
E

PL/SQL procedure successfully completed.