To Create a new user from DataBase(Backend)

-- API to create User

BEGIN
  fnd_user_pkg.CreateUser ( x_user_name =>'XXTEST',
                            x_owner => NULL,
                            x_unencrypted_password =>'welcome1',
                            x_start_date =>TO_DATE('01-JAN-2000'),
                            x_end_date => NULL, x_last_logon_date => NULL,
                            x_description => 'Operations User',
                            x_password_date => NULL,
                            x_password_accesses_left => NULL,
                            x_employee_id => NULL,
                            x_email_address => NULL,
                            x_fax => NULL,
                            x_customer_id => NULL,
                            x_supplier_id => NULL);
  COMMIT;
END;