Unexpected Fatal Error In Kupw-worker.prepare-data-imp 71 Portable — Ora-39126 Worker

Troubleshooting ORA-39126: Worker Unexpected Fatal Error in KUPW$WORKER.PREPARE_DATA_IMP [71]

-- For Container Databases (CDB), ensure all PDBs are open first ALTER PLUGGABLE DATABASE ALL OPEN; -- Run the script from the rdbms/admin directory @?/rdbms/admin/dpload.sql Use code with caution.

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

When Does This Error Occur?

The error occurs during an impdp operation, typically after the table has been created or truncated but before rows are inserted. It can happen with:

Conclusion