The Oracle error ORA-39126: Worker unexpected fatal error in KUPW$WORKER.PREPARE_DATA_IMP [71] is a generic "catch-all" internal error during a Data Pump import (impdp). It typically indicates that a worker process encountered an unhandled exception while preparing data for insertion. Primary Causes
Version Disparity: Importing a dump file from a much higher Oracle version into a lower version without using the VERSION parameter correctly. Step-by-Step Solutions 1. Exclude Statistics The Oracle error ORA-39126: Worker unexpected fatal error
, refers to a specific internal line or code path within the KUPW$WORKER Step-by-Step Solutions 1
This error, ORA-39126: Worker unexpected fatal error in KUPW-WORKER.PREPARE-DATA-IMP 71, occurs during an Oracle Data Pump import (using impdp). It is a generic "catch-all" fatal error indicating that a worker process died unexpectedly while preparing to load data into a table. Step-by-Step Solutions 1. Exclude Statistics
impdp ... transform=disable_archive_logging:y transform=constraints:n transform=indexes:n