"worker process interrupt for unhandled exception in master process"
*Cause: A worker process was requested to clean up and exit because an
unhandled exception occurred in the master process.
*Action: If this error occurs from a Data Pump client (e.g. expdp or
impdp), it means that the master process for the operation had an
unhandled exception. Check the log file for the operaton and the
trace file for the master process for any additional information.
Try the operation again. If the error occurs again, contact
Oracle Customer Support and report the error.