ORA-19602: cannot backup or copy active file in NOARCHIVELOG mode
Cause : You tried to copy or backup a file that was not closed cleanly, and the database was in NOARCHIVELOG mode. This is not allowed because when restored, the file will require redo application before it is usable, and redo is not currently being saved beyond the contents of the online redo logs.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Take the tablespace offline clean or close the database and retry the copy or backup.
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.