Ora-39126 Worker Unexpected Fatal Error In Kupw-worker.prepare-data-imp 71 ((link)) -

After running this, recompile any remaining invalid objects using the utlrp.sql script. 2. Exclude Statistics

This specific error is frequently linked to metadata inconsistencies or environment-specific bugs: After running this, recompile any remaining invalid objects

If the Data Pump internal packages (like KUPW$WORKER ) or the database catalog are invalid or out of sync, workers will fail. After running this

If the issue is caused by a corrupt Data Pump catalog, you can re-register the components by running the dpload.sql script as a SYSDBA user: After running this, recompile any remaining invalid objects