ORA-16251: LSP1 Background Build not permitted
Cause : The LSP1 background process is not permitted to start because it had previously been attempted.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
This is an internal error. Contact Oracle 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.