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

Arthur checked the disk usage. The USERS tablespace was at 99.9% capacity. The migration had simply been too large for the allocated space.

He typed rapidly:

ALTER DATABASE DATAFILE '/u01/app/oracle/oradata/orcl/users01.dbf' RESIZE 10G;

He waited. The database confirmed the resize. Arthur checked the disk usage

Now came the moment of truth. You can't just "resume" a dead worker. He had to restart the job, but thankfully, Data Pump is smart. Because he had used the REUSE_DUMPFILE parameter and the job had failed, he knew the master table would allow him to restart from a checkpoint if he attached to the job—or, more safely, simply restart the import command to let it reconcile the partial data. He waited

He restarted the import script.

Search the Data Pump log file for lines immediately before ORA-39126. Typical precursors: Arthur checked the disk usage

Run impdp with the INCLUDE=TABLE_DATA parameter to isolate data loading, and capture full error:

impdp user/password directory=DATA_PUMP_DIR dumpfile=your.dmp logfile=debug.log \
  include=TABLE_DATA \
  transform=segment_attributes:n