ORA-25316: Late in the current transaction to begin an Enqueue/Dequeue operation
Cause : Check if the Enqueue/Dequeue operation is performed via triggers on Materialized Views which isn't supported.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Triggers on materialized views aren't supported. Workarounds are on-demand materialized views or execution of trigger code within an autonomous txn.
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.