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A DMP file is just a copy of the whole database contents. During the Import, it does not get modified, so you can use that file to "jump back" to the time when that dump file was created as often as you want.


You can edit the dump file and change the included NLS_LENGTH_SEMANTICS from BYTE to CHAR. Near the beginning of the file you find a line ending like this : ^@02:00:^@^@^D^@BYTE^F^@UNUSED^A^@2^K^INTERPRETED^K^@DISABLE:ALL^@^@ Change BYTE to CHAR using your favorite text editor and save the file. When you will imp that new dump file, all columns will be ...

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