Oracle Error Message
ORA-31673: worker process interrupt for normal exit by master process
Reason for the Error
A worker process was requested to clean up and exit because the master process is doing a normal exit.
Solution
If this error occurs from a Data Pump client (e.g. expdp or impdp). it means that the master process for the operation exited prematurely. Try the operation again. If the error occurs again, contact Oracle Customer Support and report the error.