i'm not sure what to do with this error.

SQL> r
1 select partition_NAME, PARTITION_POSITION, HIGH_VALUE from
2 user_tab_partitions
3 where table_name ='PT_PAGE_EVENTS'
4* order by 2

PARTITION_NAME PARTITION_POSITION HIGH_VALUE
------------------------------ ------------------ ------------
P_2002_01_16_DAY_HUB1 1 381, 2
P_2002_01_16_DAY_HUB2 2 381, 3
P_2002_01_16_DAY_HUB3 3 381, 4
P_2002_01_17_DAY_HUB1 4 382, 2
P_2002_01_17_DAY_HUB2 5 382, 3
P_2002_01_17_DAY_HUB3 6 382, 4
P_2002_01_18_DAY_HUB1 7 383, 2
P_2002_01_18_DAY_HUB2 8 383, 3
P_2002_01_18_DAY_HUB3 9 383, 4

9 rows selected.

SQL> l
1 alter table pt_page_events
2 split partition P_2002_01_16_DAY_HUB1 at ( 356, 2 )
3 into (
4 partition p_2001_12_22_DAY_HUB1
5 partition P_2002_01_16_DAY_HUB1
6* )
SQL> /
partition P_2002_01_16_DAY_HUB1
*
ERROR at line 5:
ORA-14020: this physical attribute may not be specified for a table partition
SQL> r
1 alter table pt_page_events
2 split partition P_2002_01_16_DAY_HUB1 at ( 356, 2 )
3 into (
4 partition p_2001_12_22_DAY_HUB1
5 partition P_2002_01_16_DAY_HUB1a
6* )
partition P_2002_01_16_DAY_HUB1a
*
ERROR at line 5:
ORA-14020: this physical attribute may not be specified for a table partition

i can't figure out what is wrong with this syntax!!! what am i missing or not understanding?

thx. d.