Message Oracle ORA-39160 - error on whats my name call

ERRORerror on whats my name call
CAUSEAttempt to get the Data Pump process name failed.
ACTIONRefer to any following error messages for additional information. If this error occurs from a Data Pump client (e.g. expdp or impdp), try the operation again. If the error occurs again, contact Oracle Customer Support and report the error.