Then import that table separately with additional diagnostic parameters:
Stale dictionary or fixed object statistics are frequent culprits, causing Data Pump to miscalculate its execution plan.
Locate the trace directory using: SELECT value FROM v$parameter WHERE name = 'background_dump_dest';
Internal Data Pump packages or objects may be in an inconsistent state. Stale Dictionary Statistics: Then import that table separately with additional diagnostic
If you can provide the you are using and any ORA- codes found in your trace files, I can help you find a specific patch or workaround. Share public link
If any are INVALID , you may need to recompile them or run the Data Pump component upgrade scripts ( @?/rdbms/admin/catdp.sql ). Step 3: Use Content=Data_Only
Note : You will need to manually transfer the table structure (DDL) separately or ensure the target tables already exist. Share public link If any are INVALID ,
The error is an internal exception within the Oracle Data Pump (impdp) utility. It occurs when a worker process encounters an unhandled state while preparing data for import, often leading to a premature job termination. Common Causes
: During an impdp operation, the Data Pump master process creates a snapshot of the metadata to be imported. If there is a mismatch or corruption in the SYS.KU$_xxx master tables (specifically the SYS_IMPORT_SCHEMA_xx tables), the worker process cannot find the data it expects, throwing a "no data found" exception and wrapping it as ORA-39126.
The Oracle Data Pump error is a critical, generic unhandled internal exception that occurs during the initialization phase of a Data Pump import ( impdp ) job. It indicates that the internal Data Pump worker process ( KUPW$WORKER ) crashed while executing the PREPARE_DATA_IMP module. The number [71] acts as a specific positional or state marker within the Oracle kernel code, pointing to data structure validation or target metadata generation. It occurs when a worker process encounters an
Run a check on the target schema before restarting the import:
The structure of the error message is critical for diagnosis:
When ORA-39126 appears, the worker process usually stacks additional errors. You must look the ORA-39126 line in the log.