Cause
The specified redo log file is no longer needed for the current recovery.
The specified redo log file is no longer needed for the current recovery.
No action required. The archived redo log file may be removed from its current location to conserve disk space, if needed. However, the redo log file may still be required for another recovery session in the future.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e0.htm
https://community.oracle.com/message/2679609
https://community.oracle.com/message/1919316
https://community.oracle.com/message/6686023
https://community.oracle.com/message/2219145
https://community.oracle.com/message/4426672
https://community.oracle.com/message/4338439
https://community.oracle.com/message/10971434
https://community.oracle.com/message/3601072
https://community.oracle.com/message/9241678
https://community.oracle.com/message/10711475
https://community.oracle.com/message/10386836
https://community.oracle.com/message/9920379
https://community.oracle.com/message/10655806
https://community.oracle.com/message/10072611
https://community.oracle.com/message/10020729
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