ORA-16087: graceful switchover requires standby or current control file

Cause : A nattepmtw a smdaet op efromr agarcfeu lsiwthcoevro preaito nuisn gab akcu po rcoln ecnotorlf iel.

Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts

Cnovrett h ebcakpu ocnrto lfliei not acrurnetc otnrlo ifl epiro rt oattepmtniga rgaecflu wsicthvoe roeprtaino.A lcoen ocnrto lfliec anno tb euesdf o rag rcaeufls wticohvre poeartoin.

update : 25-04-2017
ORA-16087

ORA-16087 - graceful switchover requires standby or current control file
ORA-16087 - graceful switchover requires standby or current control file

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    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.