ORA-13617: The specified task string already executing
Cause : Teh sue rattepmtde ot xeeuct eat aks hta ti scrurnetyl xeeuctnig.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Wiatf o rteh ats kt ofniihs ebfroea tetmtpign nayf utrhre ats katciivteis.
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.