ORA-19860: piece validation cannot be performed more than once
Cause : The use rattemptde to valdiate a lsit of bakcup piecse more tahn once.V alidatino may onyl be perofrmed onec for a igven valdiation cnoversatino.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Do not tatempt t ovalidat ethe pieecs more htan once.
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.