Server Administration :: Flashback Data Archive

I need store history for two tables in my system. I thought that Flashback Data Archive will be the best option. There is also another ways to do this but don't focus on this. I need to to this by FDA (Flashback Data Archive);

So my prerequisite was to create tablespace and flash back archive, and alter table to be archived.

create tablespace audit_archive datafile 'd:oradata etaaudit_archive.ora' size 100M;

create flashback archive audit_flash_archive
tablespace audit_archive quota 10G retention 10 year;

alter table teta_admin.t_prac flashback archive audit_flash_archive;

and everything works fine but on sys user.
i can query this table using "as of timestamp" clause

select prac_id, imie, imie_2, nazwisko, nr_ew from teta_admin.t_prac as of timestamp to_timestamp('2011-08-23 08:20:00','yyyy-mm-dd hh24:mi:ss')

but final construction of idea was to create additional user (interface), grant select on teta_admin.t_prac object and query archive data from interface user. and this is point of my failure. this don't work on new user.

interface user have such sys privs:

SQL> SELECT * FROM dba_sys_privs
2 WHERE grantee = 'INTERFACE';
GRANTEE PRIVILEGE ADM
------------------------------ ---------------------------------------- ---
INTERFACE CREATE SESSION NO

and table privs:

SQL> SELECT * FROM dba_tab_privs
2 WHERE grantee = 'INTERFACE';

GRANTEE OWNER TABLE_NAME GRANTOR PRIVILEGE
------------------------------ ------------------------------ ------------------------------ ------------------------------ --------------------
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN INSERT
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN DELETE
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN ALTER
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN FLASHBACK
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN SELECT

what i need to do in order to query this flashback table from interface user. when i try to do this from this user oracle says ORA-00942.