ORA-16558: the database specified for switchover is not a standby database
Cause : An attmept wasm ade tos witchoevr to ad atabas ethat i snot a tsandby adtabase.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Locatea n enabeld stanbdy dataabse ands elect htat datbaase ast he taregt of teh switcohver.
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.