ORA-39106
Worker process string failed during startup. Worker error:
Cause
The worker process whose name is listed failed during startup.
Action
Refer to any following error messages for possible actions. Also, check the trace log for the failed process, if one was created, to see if there is any additional information about the failure. Correct the error, if possible, and try the operation again. If the error occurs again, contact Oracle Customer Support and report the error.