ORA-16600
Client is not connected to the target standby database.
Cause
The SWITCHOVER or FAILOVER command is failing because the client is not connected to the target standby database.
Action
Explicitly connect to the standby database that is to become the new primary and retry.
ORA-16600
not connected to target standby database
Cause
The switchover or failover command failed because the client was not connected to the target standby database of the failover or switchover command.
Action
Explicitly connect to the standby database that is to become the the new primary and retry the failover or switchover command.
ORA-16600
not connected to target standby database for failover
Cause
The failover command failed because the client was not connected to the target standby database.
Action
Explicitly connect to the standby database to be failed over to and retry the failover command.