An authorization failure occurred when connecting to the Grid Infrastructure Management Repository.
Take the following steps. 1) Examine the accompanying ORA-nnnnn or CRS-nnnn error messages. If possible, correct the issue reported. 2) Issue a 'srvctl status mgmtdb' command to determine the status of the Grid Infrastructure Management Repository database. If it is not online, examine the database instance alert log to determine what happened. 3) If you are unable to determine or correct the problem, run 'diagcollection.pl' and contact Oracle Support Services.
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Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/crsus.htm