ORA-25145: allocation policy already specified
Cause : In CREATE TABLESPACE, the allocation policy was specified more than once, for example, AUTOALLOCATE and UNIFORM.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Remove all but one of the allocation policy specifications.
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.