Ora-39126 Worker Unexpected Fatal Error In Kupw-worker.prepare-data-imp 71 ((free)) 🎯 Editor's Choice

Arthur let out a breath he didn’t know he was holding. It wasn’t corruption. It wasn't a hardware failure. The worker process— KUPW$WORKER —had tried to prepare a chunk of data for import, hit a wall, and threw its hands up in a "fatal error."

In Multitenant environments (12c and higher), ensure all PDBs are open before running this script. 3. Refine the Import Parameters Arthur let out a breath he didn’t know he was holding

It processed the metadata. It hit the "Prepare Data" phase—the exact spot where it had died ten minutes ago. This time, with the extra gigabytes of breathing room, the worker didn't crash. hit a wall