OCI-38855
        cannot mark instance string (redo thread string) as enabled
        
        
        Cause
        The standby switchover or failover operation failed because it needs to mark an instance (redo thread) as enabled. However, it had less than 2 online redo logs, which prevented it from being enabled.
        Action
        Add more logfiles to the specified instance and retry the command.
        
     
    
    
        OCI-38855
        cannot mark instance string (redo thread string) as enabled
        
        
        Cause
        The standby switchover or failover operation failed because it needs to mark an instance (redo thread) as enabled. However, it had less than 2 online redo logs, which prevented it from being enabled.
        Action
        Add more logfiles to the specified instance and retry the command.
        
     
    
    
        OCI-38855
        cannot mark instance string (redo thread string) as enabled
        
        
        Cause
        The standby switchover or failover operation failed because it needs to mark an instance (redo thread) as enabled. However, it had less than 2 online redo logs, which prevented it from being enabled.
        Action
        Add more logfiles to the specified instance and retry the command.