ORA-16069? You May Need A New Standby Controlfile
Posted by Don Seiler on Apr 15, 2009
On a recent Monday, I had to perform an emergency Oracle standby switchover for a client whose primary instance host had mysteriously rebooted itself over the previous day. Confidence in that host was, understandably, shaken.
The Oracle Data Guard configuration is a 3-instance setup using Data Guard Broker: one primary, we’ll call it OraA, feeding two standby instances, OraB and OraC. In this particular configuration, we perform switchovers between OraA and OraC. Caught in the middle is OraB, which is on a 60-minute standby delay.
After this particular switchover, OraB started complaining with this message in the alert log:
