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

Data Pump workers are heavily reliant on Program Global Area (PGA) memory. If the PGA allocation is insufficient or a specific event has limited the heap size, the workers fail.

: If the default temporary tablespace is missing or empty, Data Pump cannot manage the metadata for the import job. Schema Conflicts : Attempting to import system schemas (like ) along with application data can trigger this fatal error. Privilege Issues : Sometimes granting IMP_FULL_DATABASE Data Pump workers are heavily reliant on Program

: Ensure the default temporary tablespace is correctly assigned and has active tempfiles. Schema Conflicts : Attempting to import system schemas

Immediate impact

The specific message ending with [71] provides a powerful clue. In the context of the KUPW worker, the numeric code points to the exact point of failure. When you see "prepare-data-imp 71", it indicates that the worker encountered an issue while preparing for the data import, specifically during an attempt to populate a table. This phase is critical for setting up the import environment. In the context of the KUPW worker, the

impdp ... EXCLUDE=TABLE:\"IN \(\'DATA_TABLE\'\)\"

: Attempting to import system-related schemas (e.g., SYSMAN , XDB ) across different versions or platforms frequently triggers this error.