ORA-29254: Invalid lower_bound argument passed to procedure dbms_sql.define_array
Cause : The lower_bound argument specified in the call to procedure define_array had an invalid value. Legal values are all integers (both positive and negative) including zero. The null value is illegal.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Correct your PL/SQL program so that only valid arguments are passed to define_array and try again.
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.