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

If Data Pump consistently fails, try the original imp utility (if export was done with original exp).

Before importing the failing table, manually create it with more forgiving attributes:

Example:

ALTER TABLE problematic_table DISABLE ALL TRIGGERS;
ALTER TABLE problematic_table MODIFY lob_column (lob_storage AS basicfile);

Direct path loads are fast but less tolerant of data anomalies. Disable it:

impdp ... ACCESS_METHOD=EXTERNAL_TABLE

Or:

impdp ... ACCESS_METHOD=SEQUENTIAL_FILE

If the import succeeds, the issue lies in direct path’s handling of your data.

Through analysis of numerous incident reports and Oracle Support documentation, several recurring causes have been identified: If Data Pump consistently fails, try the original

To avoid this error in the future:

Run impdp with LOGFILE and TRACE to see preceding errors: Direct path loads are fast but less tolerant

impdp user/pwd DIRECTORY=dp_dir DUMPFILE=exp.dmp LOGFILE=imp.log TRACE=480300