ORA-23457: invalid flavor ID string
Cause : The given flavor ID is invalid.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Make sure this flavor has been instantiated. If the flavor ID is outside the range (-2147483647, 2147483647), contact customer support.
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.