Gathering statistics on partitioned and non-partitioned tables

Hi all,
My DB is 11.1

I find that gathering statistics on partitioned tables are really slow.

TABLE_NAME                       NUM_ROWS     BLOCKS SAMPLE_SIZE LAST_ANALYZED PARTITIONED COMPRESSION
------------------------------ ---------- ---------- ----------- ------------- ----------- -----------
O_FCT_BP1                        112123170     843140    11212317 8/30/2011 3:5    NO          DISABLED
LEON_123456                      112096060     521984    11209606 8/30/2011 4:2    NO          ENABLED
O_FCT                           115170000     486556      115170 8/29/2011 6:3     YES   
 
SQL> SELECT COUNT(*)  FROM user_tab_subpartitions
  2  WHERE table_name =O_FCT<font color="#000080">'</font>
  3  ;
 
  COUNT(*)
----------
       112

I used the following script:

BEGIN
  DBMS_STATS.GATHER_TABLE_STATS(ownname          => user,
                                tabname          => O_FCT<font color="#000080">',</font>
                                method_opt       => <font color="#000080">'for all