The KUPW$WORKER process is the core engine of Oracle Data Pump, responsible for orchestrating the export and import of database objects. When the worker dies from an unhandled exception, Oracle raises this error. While the main job may continue, any objects being processed by the failed worker will be incomplete or skipped altogether. Pinpointing the root cause is critical, as the error itself is a generic symptom of a variety of underlying problems.
The error is occurring in the KUPW_WORKER.PREPARE_DATA_IMP procedure, which is part of the Data Pump worker process. The error code is 71, which is an internal Oracle error code. The KUPW$WORKER process is the core engine of
Prevention is better than cure. Implement the following strategies to minimize the risk of encountering this error in Data Pump jobs: Pinpointing the root cause is critical, as the
Or, check the Data Pump master table:
If the Data Pump internal packages (like KUPW$WORKER ) or the database catalog are invalid or out of sync, workers will fail. Prevention is better than cure
The internal Data Pump packages ( DBMS_DATAPUMP , KUPW$WORKER ) might be invalid, or a recent PSU/RU (Patch Set Update/Release Update) update was improperly applied, leaving the Data Pump dictionary in an inconsistent state.