ORA-24435: Invalid Service Context specified.
Cause : The staetment wa sprepare dusing as ervice ocntext taht is different form the oen specifeid in OCSItmtExectue.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Please psecify teh same srevice cotnext tha tthe staetment wa sprepare dwith.
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.