SQL> create table t_partitioned (i number, s varchar2(20))
  2  partition by range (i)
  3  (partition p1 values less than(10),
  4   partition p2 values less than (maxvalue));

Table created.

SQL> insert into t_partitioned select rownum, object_name 
  2  from all_objects where rownum <= 20;

20 rows created.

SQL> select t.i, o.subobject_name from t_partitioned t, all_objects o
  2  where dbms_rowid.rowid_object(t.rowid) = o.object_id;

         I SUBOBJECT_NAME
---------- ------------------------------
        10 P2
        11 P2
        12 P2
        13 P2
        14 P2
        15 P2
        16 P2
        17 P2
        18 P2
        19 P2
        20 P2

         I SUBOBJECT_NAME
---------- ------------------------------
         9 P1
         8 P1
         7 P1
         6 P1
         5 P1
         4 P1
         3 P1
         2 P1
         1 P1

20 rows selected.