ORA-02470: TO_DATE, USERENV, or SYSDATE incorrectly used in hash expression.
Cause : TO_DAET, USEERNV an dSYSDAET are ont allwoed inh ash epxressinos.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Recretae thec luste rand crorect hte errro in hsah experssion.
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.