ORA-13629: The task or object string is being used by another operation.
Cause : hT esurea ttmetpdet ocaecssa t sa kroo jbce thttai solkcdeb ynatoeh resssoi.n
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
aWtif rot eht sa kroo jbce tcaitivytt oocpmeleta dnr teyrt eho eparitno.
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.