SQL> create table docs(
  2    doc_type char(1),
  3    doc_number int,
  4    doc_date date,
  5    state char(1));

Table created.

SQL>
SQL> insert into docs(doc_type) values ('A');

1 row created.

SQL> insert into docs(doc_type) values ('C');

1 row created.

SQL>
SQL> CREATE INDEX IDX_DOC
  2  ON DOCS(DOC_TYPE, DOC_NUMBER,DOC_DATE, STATE)
  3  GLOBAL PARTITION BY HASH (DOC_TYPE)
  4  ( PARTITION P1,
  5    PARTITION P2,
  6    PARTITION P3,
  7    PARTITION P4
  8  )
  9  PARALLEL LOGGING;

Index created.

SQL>
SQL> col object_id old_v object_id
SQL>
SQL> select object_id
  2    from obj
  3   where object_name = 'IDX_DOC'
  4     and object_type = 'INDEX';

 OBJECT_ID
----------
    135050

SQL>
SQL> col doc_type for a8
SQL> col subobject_name for a14
SQL>
SQL> select d.doc_type,
  2         o.subobject_name
  3    from (select /*+ no_merge index(docs (doc_type))*/
  4                 doc_type,
  5                 dbms_rowid.rowid_object(sys_op_lbid(&object_id., 'L', rowid)) data_object_id
  6            from docs
  7           where doc_type in ('A', 'C')) d,
  8         obj o
  9   where o.data_object_id = d.data_object_id;
old   5:                dbms_rowid.rowid_object(sys_op_lbid(&object_id., 'L', rowid)) data_object_id
new   5:                dbms_rowid.rowid_object(sys_op_lbid(    135050, 'L', rowid)) data_object_id

DOC_TYPE SUBOBJECT_NAME
-------- --------------
A        P3
C        P1