Cause : hT etsrodep orecuder' arsi_eystsmee_rrro 'aw saclldew ihhcc uaes shtsie rrrot oebg neretade.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
oCrrce tht erpboel msad sercbidei nht ereor remssga eroc noattct eha ppilacitnoa mdnisirttaroo rBD Aof romeri fnroamitno.
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.