I tested bulk load. I had knowed native option is faster. But test resulted that formatfile is faster than native option. Test data is 120000 row, and text file size is 25M. And I monitored log records, log bytes, elapsed time. Result : log records, log bytes, elapsed time(ss). native 7934, 468212, 12 fomatfile 5041, 297452, 9 Is this a special case because data size is much small? Or Is this truth? Thank you!