Cause
Attempting to invoke cfileSetSnapshotName, cfileMakeAndUseSnapshot, or cfileUseSnapshot when the currently mounted control file is a backup control file.
Attempting to invoke cfileSetSnapshotName, cfileMakeAndUseSnapshot, or cfileUseSnapshot when the currently mounted control file is a backup control file.
Mount a current control file and retry the operation.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e0.htm
https://community.oracle.com/message/11197645
https://community.oracle.com/message/1944050
https://community.oracle.com/message/1944045
https://community.oracle.com/message/11065429
https://community.oracle.com/message/3562974
https://community.oracle.com/message/9319182
https://community.oracle.com/message/2446868
https://community.oracle.com/message/10245833
https://community.oracle.com/message/10991391
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