Cause
A clone database open forces logfile renaming to avoid overwriting the primary logfiles
A clone database open forces logfile renaming to avoid overwriting the primary logfiles
Rename the logfiles manually or using the log_file_name_convert initialization parameter
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e0.htm
https://community.oracle.com/message/1084804
https://community.oracle.com/message/9636024
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