Thanks, for response.
In details is:
select dbms_stats.get_stats_history_availability from dual; (01/11/07)
select dbms_stats.get_stats_history_retention from dual; (31)
The awr is default 7 days
In addition, let me know, how i know the retention policy, and which is the procedure for moving tables to a different tablespace.

The tablespace in four months grows 700MB and i can adding space.

Thanks