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

Attempting to import system-related schemas (like SYSMAN ) across different Oracle versions (e.g., 11g to 12c) often triggers internal preparation errors. Troubleshooting and Resolution Steps 1. Rebuild Data Pump Metadata

After running this, recompile any remaining invalid objects using the utlrp.sql script. 2. Exclude Statistics Attempting to import system-related schemas (like SYSMAN )

Running the import as SYSDBA rather than a standard user with DATAPUMP_IMP_FULL_DATABASE privileges can lead to unexpected behavior. Attempting to import system-related schemas (like SYSMAN )

Stale or corrupt optimizer statistics in the source dump file can cause the worker to crash during the preparation phase. Attempting to import system-related schemas (like SYSMAN )

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