I found this article from my old Evernote note. The original link no longer works so I just post the archived version here. 緣起 其實這些文字的產生，是有一點小故事的。筆者最近因為LP唱盤教調的問題，數度到越點請教洪老闆
In order to test a data conversion tool which my team had been developing for weeks, we wanted to import the latest database dump from production to our develop environment so we can run the tool against the latest data and assess the conversion result.
The database in our environment was Oracle 11g Release 2, and the DMP file to be imported was about 34 GB. I let the import process ran overnight, only to realize next morning that it failed.
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