Hi all !

I have a problem adding a new partition in a range partitioned table.
The table was builded like this :

create table test
(
c1 char(10) not null,
c2 char(6) not null,
...
c8 number(15),
c9 number(15)
)
partition by range (c2)
(partition 199901 values less than (199902),
partition 199902 values less than (199903),
...
partition 200212 values less than (200301));

There are 3 bitmap indexes and 1 unique index, and there're all partitioned local.

When I tried to execute :

alter table test add partition P200301 values less than ('200302')

I received the ORA-14074 error (partition bound must collate higher than that of the last partition).

And don't understand why ?
Can anyone help me please ?
Thanks a lot in advance ...