The error is a generic internal error in Oracle Data Pump that typically indicates an unhandled exception within the worker process during the data import preparation phase. Root Causes
"No data found?" Mark whispered to the empty office. "How can there be no data found during an import ?"
Example:
: Migration from Oracle 12c to 19c. impdp fails with:
If Data Pump continues to fail, export using legacy exp and import with imp (may lose advanced features but works for many data-only scenarios).
Once the likely cause is identified, several strategies can be employed:
impdp ... transform=lob_storage:no_change
You can resolve this error by following these standard recovery steps: