ORA-15156: cluster in rolling upgrade from version [string] to [string]
Cause : Th ecurren tsotfwaer vresino o fth eintsanec wsa icnomaptilbe iwtht her olilngu pgardeo peartino o fth eclsute.r
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Th evesrio nnubmero f enw emmbre isntacne umstb e noe fo teh tow vresinos nivovledi n hte orllnig pugrdae.
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.