Server Administration :: Cannot Execute Dbms_redefinition.start_redef_table

Which privs do grant to user? i can not execute start_redef_table

SQL> Begin
2 Dbms_Redefinition.Can_Redef_Table(USER, 'TB_HXL_USER');
3 End;
4 /

PL/SQL procedure successfully completed.

SQL> BEGIN
2 dbms_redefinition.start_redef_table(
3 uname => USER,
4 orig_table => 'TB_HXL_USER',
5 int_table => 'TB_HXL_USER_MID',
6 options_flag => DBMS_REDEFINITION.cons_use_pk);
7 END;
8 /
BEGIN
*
ERROR at line 1:
ORA-01031: insufficient privileges
ORA-06512: at "SYS.DBMS_REDEFINITION", line 52
ORA-06512: at "SYS.DBMS_REDEFINITION", line 1646
ORA-06512: at line 2