ORA-19207: scalar parameter string of XMLELEMENT cannot have an alias.
Cause : The scalar parameter to XMLELEMENT has been qualified with an alias.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Remove the AS clause of the scalar element.
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.