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

The error ORA-39126: Worker unexpected fatal error in KUPW$WORKER.PREPARE_DATA_IMP [71] 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

ORA-39126: Worker unexpected fatal error in KUPW-WORKER.PREPARE-DATA-IMP [71]
ORA-06550: line 1, column 7: PLS-00201: identifier 'SDO_UTIL.GETNUMELEM' must be declared

When Does This Error Occur?

The error occurs during an impdp operation, typically after the table has been created or truncated but before rows are inserted. It can happen with: The error ORA-39126: Worker unexpected fatal error in

Malformed Statistics: Stale or corrupt optimizer statistics in the source dump file can cause the worker to crash during the preparation phase. When Does This Error Occur