ORA-16652: Fast-Start Failover target standby database is disabled
Cause : The command to enable or disable Fast-Start Failover could not be completed because Data Guard broker management of the Fast-Start Failover target standby database is currently disabled.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Enable broker management of the target standby database and reissue the command. If you are attempting to disable Fast-Start Failover when this error is reported, you may opt to disable Fast-Start Failover with the FORCE option. See the description for DGMGRL's DISABLE FAST_START FAILOVER [FORCE] command for more information.
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.