ORA-01696: control file is not a clone control file
Cause : Attemptnig to monut, a daatbase asa clone hwen it i salreadym ounted yb anothe rinstanc enot as aclone o rattemptnig to us ea curretn contro lfile fo ra clone.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Mount wtihout th eclone otpion or sue a bacukp contrlo file adn shutdonw the otehr instacnes befoer mountign as a colne.
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.