Split partition online(12cr2 only) - oracle database script

SQL>
ALTER TABLE order_tab split PARTITION CREATED_MX INTO (PARTITION CREATED_2106_P2
                                                       VALUES LESS THAN (TO_DATE('01/03/2016', 'DD/MM/YYYY')),PARTITION CREATED_MX) ONLINE;

TABLE altered. SQL>
SELECT partition_name,
       read_only,
       high_value
FROM dba_tab_partitions
WHERE TABLE_NAME='ORDER_TAB';