ORA-28594: agent control utility: invalid parameter name
Cause : The user tried to set or unset an invalid agent parameter.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Refer to documentation and correct the parameter name.
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.