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

The ORA-39126 error typically manifests in the following ways:

While less common, corruption within the dumpfile can cause the worker process to read malformed data, resulting in an unhandled exception. Steps to Fix ORA-39126

Attempting to import a dump file from a newer Oracle version into an older database without using the parameter can cause internal worker failures. Invalid Objects in SYS/SYSTEM:

If in a Multitenant environment (CDB/PDB), ensure you run this in the specific PDB that is causing issues. Solution B: Exclude Statistics ( EXCLUDE=STATISTICS ) The ORA-39126 error typically manifests in the following

impdp ... transform=lob_storage:no_change

Solution A: Rebuild Data Pump Packages (Most Likely Solution)

: The Data Pump packages or catalog objects themselves may be invalid or corrupted within the database. It is a generic "catch-all" fatal error indicating

Locate the trace directory using: SELECT value FROM v$parameter WHERE name = 'background_dump_dest';

This error, , 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.

ALTER SYSTEM SET pga_aggregate_target = 2G SCOPE=BOTH; Before applying it

Use select count(*) from dba_objects where status = 'INVALID'; . Compile invalid objects using utlrp.sql . 3. Exclude Statistics

: cd $ORACLE_HOME/rdbms/admin Execute as SYSDBA : SQL> @dpload.sql Use code with caution. Copied to clipboard

However, for a complete import of both schema and data, a permanent fix is required. According to Oracle, this issue was addressed in Oracle Database 20c and later. For customers on older versions, the solution is to apply the interim patch 29450761 . This patch should be available for various platforms and Oracle versions. Before applying it, it is crucial to check for any conflicting patches using the Oracle MOS Patch Planner Tool (Note 1317012.1) to ensure a clean installation.

If the error persists and is linked to specific objects, you can bypass the failure by excluding statistics or problematic schemas. Add EXCLUDE=STATISTICS to your impdp command.