Cause
A filename was given to drop logfile member that is not a part of the database, or which is a data file.
A filename was given to drop logfile member that is not a part of the database, or which is a data file.
Supply a valid logfile member name.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e0.htm
https://community.oracle.com/message/2165913
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