ORA-14644: table is not subpartitioned by Hash method
Cause : A subpartition maintenance operation such as ALTER TABLE MODIFY PARTITION COALESCE SUBPARTITION can only be performed on Hash subpartitioned objects
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Re-issue the command against a Hash subpartitoned object.
Well, the reason for above error is that i have taken the above script from a 11g database and running it on 10g database. 11g has bring some changes in password management. Below code is executed on 11g and user created successfully, which is expected result.