Problems with partition tables

Question

Hi all,
I've got some problems with partition tables. The script at the bottom run but when I wanna insert some values it returns me an error
(ORA-06550: line 1, column 30: PL/SQL: ORA-06552: PL/SQL: Compilation unit analysis terminated
ORA-06553: PLS-320: the declaration of the type of this expression is incomplete or malformed
ORA-06550: line 1, column 7: PL/SQL: SQL Statement ignored)
and I can't understand why!
There's something incorrect in the script or not?
Please help me
Thanks in advance
Steve
CREATE TABLE TW_E_CUSTOMER_UNIFIED
ID_CUSTOMER_UNIFIED VARCHAR2 (27) NOT NULL ,
START_VALIDITY_DATE DATE NOT NULL ,
END_VALIDITY_DATE DATE ,
CUSTOMER_STATUS VARCHAR2 (255)
PARTITION BY RANGE (START_VALIDITY_DATE)
SUBPARTITION BY LIST (END_VALIDITY_DATE)
PARTITION M200909 VALUES LESS THAN (TO_DATE('20091001','YYYYMMDD'))
(SUBPARTITION M200909_N VALUES (NULL), SUBPARTITION M200909_NN VALUES (DEFAULT)),
PARTITION M200910 VALUES LESS THAN (TO_DATE('20091101','YYYYMMDD'))
(SUBPARTITION M200910_N VALUES (NULL), SUBPARTITION M200910_NN VALUES (DEFAULT)),
PARTITION M200911 VALUES LESS THAN (TO_DATE('20091201','YYYYMMDD'))
(SUBPARTITION M200911_N VALUES (NULL), SUBPARTITION M200911_NN VALUES (DEFAULT)),
PARTITION M200912 VALUES LESS THAN (TO_DATE('20100101','YYYYMMDD'))
(SUBPARTITION M200912_N VALUES (NULL), SUBPARTITION M200912_NN VALUES (DEFAULT)),
PARTITION M201001 VALUES LESS THAN (TO_DATE('20100201','YYYYMMDD'))
(SUBPARTITION M201001_N VALUES (NULL), SUBPARTITION M201001_NN VALUES (DEFAULT)),
PARTITION M201002 VALUES LESS THAN (TO_DATE('20100301','YYYYMMDD'))
(SUBPARTITION M201002_N VALUES (NULL), SUBPARTITION M201002_NN VALUES (DEFAULT)),
PARTITION M210001 VALUES LESS THAN (MAXVALUE))
(SUBPARTITION M210001_N VALUES (NULL), SUBPARTITION M210001_NN VALUES (DEFAULT))
;

Answer 1

Hi Hoek,
the DB version is 10.2 (italian version, then SET is correct).
...there's something strange: now I can INSERT rows but I can't update them!
I'm using this command string:
UPDATE TW_E_CUSTOMER_UNIFIED SET END_VALIDITY_DATE = TO_DATE('09-SET-09', 'DD-MON-RR') WHERE
id_customer_unified = '123' and start_validity_date = TO_DATE('09-SET-09', 'DD-MON-RR');
And this is the error:
Error SQL: ORA-14402: updating partition key column would cause a partition change
14402. 00000 - "updating partition key column would cause a partition change"
*Cause:    An UPDATE statement attempted to change the value of a partition
key column causing migration of the row to another partition
*Action:   Do not attempt to update a partition key column or make sure that
the new partition key is within the range containing the old
partition key.
I think that is impossible to use a PARTITION/SUBPARTITION like that: in fact the update of "END_VALIDITY_DATE" cause a partition change.
Do u agree or it's possible an update on a field that implies a partition change?
Regards Steve