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

When doing a full import, avoid importing system schemas. Use the EXCLUDE parameter to skip these schemas in your impdp command:

Search the Data Pump log file for lines immediately before ORA-39126 . Typical precursors:

Example:

impdp ... CONTENT=DATA_ONLY

He realized what had happened. A developer had dropped a temporary table on the source system exactly as the export began, leaving a ghost entry in the export dump. The import worker reached for the ghost, found nothing, and panicked. When doing a full import, avoid importing system schemas

When the worker encounters a "fatal error" at this stage, it means the process cannot proceed because the metadata or data stream is inconsistent, corrupted, or incompatible with the target database. The worker does not merely throw a warning; it halts the entire import operation.

Check the Alert Log and Trace FilesData Pump errors in the console are often vague. To find the "real" underlying error (like an ORA-00600 or ORA-07445), you must look deeper.

impdp username/password DIRECTORY=dpump_dir DUMPFILE=export.dmp ACCESS_METHOD=EXTERNAL_TABLE Use code with caution. Solution 4: Clean Up the Data Pump Repository

Using the DBMS_DATAPUMP API, he manually attached to the ghost job. He signaled the worker to skip the corrupted object, essentially telling the engine to "ignore the ghost." He held his breath and issued the command: START_JOB . CONTENT=DATA_ONLY He realized what had happened

ORA-39126: Worker unexpected fatal error in KUPW-WORKER.PREPARE-DATA-IMP [71] ORA-01403: no data found

If you are still experiencing this error, ensure your database is updated to the latest patch set to resolve known DBMS_METADATA bugs.

Before implementing a fix, a thorough diagnosis is recommended. Follow this structured approach to gather necessary information:

Review the resulting trace file to see the last SQL statement or object type handled before block 71 failed. Proven Solutions and Workarounds When the worker encounters a "fatal error" at

How it helps : This bypasses the problematic metadata preparation phase entirely, only loading row data. Command :

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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.