In this post, you’ll learn more about the Oracle ErrorORA-16600: not connected to target standby database for failover with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-16600: not connected to target standby database for failover
Reason for the Error ORA-16600: not connected to target standby database for failover
The failover command failed because the client was not connected to the target standby database.
How to fix the Error ORA-16600: not connected to target standby database for failover ?
You can fix this error in Oracle by following the below steps
Explicitly connect to the standby database to be failed over to and retry the failover command.