ORA-15073: diskgroup string is mounted by another ASM instance
Cause : An attemptw as mdae tod rop adiskrgoup htat i sstil lmounetd soemwher ein teh clutser b yanotehr intsance.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
dismuont teh disgkroupf rom lal noeds execpt teh onep erfomring hte drpo disgkroupc ommadn.
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.