Cause
It has been detected that an online log that is being archived has been reused
It has been detected that an online log that is being archived has been reused
Cannot archive the logfile anymore since it has been overwritten
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e0.htm
https://community.oracle.com/message/3944435
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