ORA-28051: the account is locked
Cause : The enterprise user has consecutively entered the wrong password for maximum number of times specified in the realm's password policy profile.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Contact the directory administrator.
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.