PROCEDURE ROWID_INFO
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 ROWID_IN                       ROWID                   IN
 ROWID_TYPE                     NUMBER                  OUT
 OBJECT_NUMBER                  NUMBER                  OUT
 RELATIVE_FNO                   NUMBER                  OUT
 BLOCK_NUMBER                   NUMBER                  OUT
 ROW_NUMBER                     NUMBER                  OUT
 TS_TYPE_IN                     VARCHAR2                IN     DEFAULT
SQL> select object_id , object_name from dba_objects where owner='PERFSTAT' and object_name like 'TMP%';
 OBJECT_ID
----------
OBJECT_NAME
--------------------------------------------------------------------------------------------------------------------------------
    283365
TMP_LOG_HISTORY
SQL>  select rowid from perfstat.TMP_LOG_HISTORY;
ROWID
------------------
AADNUcABYAAAXSKAAA
SQL> set serveroutput on
SQL> l
  1  declare
  2  my_rowid varchar2(200);
  3  ts_type_in VARCHAR2(200);
  4  rid_type number;
  5  obj_num number;
  6  file_num number;
  7  block_num number;
  8  row_num number;
  9  begin
 10  my_rowid:='AADNUcABYAAAXSKAAA';
 11  ts_type_in:='SMALLFILE';
 12  --dbms_rowid.rowid_info(my_rowid,rid_type, obj_num, file_num, block_num, row_num);
 13  dbms_rowid.rowid_info(my_rowid,rid_type, obj_num, file_num, block_num, row_num,ts_type_in);
 14  dbms_output.put_line ('object id is :'||to_char(obj_num));
 15* end;
SQL> /
object id is :840988
PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
SQL> select  object_id,object_name from dba_objects where data_object_id=840988 ;
 OBJECT_ID
----------
OBJECT_NAME
--------------------------------------------------------------------------------------------------------------------------------
    283365
TMP_LOG_HISTORY
-- note taht data_object_id  is not the same as object id