ORA-16152: standby database is in 'no-data-loss' protected mode
Cause : The attempted database operation is not allowed while the standby database is in 'no-data-loss' protected mode.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Verify that the attempted database operation is warranted, ALTER DATABASE SET STANDBY DATABASE UNPROTECTED and reissue the statement.
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.