http://support.microsoft.com/kb/281517/EN-US/.

PRB: Transfer of Data from Jet 4.0LEDB Source Fails with Buffer Overflow Error

"Error at source for row number 9.Errors encountered so far in this task :1"
General Error: -2147217887(80040E21)
Data for Source Column 3('Col3') is too large for the specified buffer size.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Jet\4.0\Engines\Excel

TypeGuessRows 값을 0로 설정 후 import