Ora-39126 Worker Unexpected Fatal Error In Kupw-worker.prepare-data-imp 71 May 2026

-- 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.

Stale or corrupt optimizer statistics in the source dump file can cause the worker to crash during the preparation phase. -- For Container Databases (CDB), ensure all PDBs

This specific error is frequently linked to metadata inconsistencies or environment-specific bugs: It occurs when a worker process encounters an

The error is an internal exception within the Oracle Data Pump (impdp) utility. It occurs when a worker process encounters an unhandled state while preparing data for import, often leading to a premature job termination. Common Causes 2. Exclude Statistics

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