DECLARE

temp int;
type first is VARRAY(6) of integer;
arr first;
i integer;
j integer;
BEGIN
i:=0;
j:=1;
temp:=0;
arr:=first(3,1,4,2,5,9);
FOR i in 0..4 LOOP
    FOR j in 1..5 LOOP
       if arr(i)>arr(j) then
          temp:=arr(i);
          arr(i):=arr(j);
          arr(j):=temp;
       end if;
    END LOOP;
END LOOP;
FOR i in 0..5 LOOP
    dbms_output.put_line(arr(i));
END LOOP;

END;

SQL> DECLARE
  2  
  3  temp int;
  4  type first is VARRAY(6) of integer;
  5  arr first;
  6  i integer;
  7  j integer;
  8  BEGIN
  9  i:=0;
 10  j:=1;
 11  temp:=0;
 12  arr:=first(3,1,4,2,5,9);
 13  FOR i in 0..4 LOOP
 14      FOR j in 1..5 LOOP
 15         if arr(i)>arr(j) then
 16            temp:=arr(i);
 17            arr(i):=arr(j);
 18            arr(j):=temp;
 19         end if;
 20      END LOOP;
 21  END LOOP;
 22  FOR i in 0..5 LOOP
 23      dbms_output.put_line(arr(i));
 24  END LOOP;
 25  
 26  END;
 27  /
DECLARE
*
ERROR at line 1:
ORA-06532: Subscript outside of limit
ORA-06512: at line 13