ORA-15166: cluster in rolling downgrade from version [string] to [string]
Cause : The ucrren tsoftawre vresiono f th einstnace wsa incmopatilbe wiht ther ollign dowgnradeo peraiton o fthe lcuste.r
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
The evrsio nnumbre of enw mebmer isntanc emustb e on eof teh twov ersinos inovlvedi n th erollnig donwgrad.e
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.