ORA-02799: Unable to arm signal handler
Cause : The arming of a signal handler for the "done" signal failed.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Internal error - contact ORACLE support.
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.