如果你使用的是SQL SERVER
则下面文件是必须的:
Sqloledb.dll C:\Program Files\Common Files\System\Ole DB
Dbmsvinn.dll Windows system folder
Dbmsshrn.dll Windows system folder
Dbmsadsn.dll Windows system folder
Dbmsrpcn.dll Windows system folder
Dbnmpntw.dll Windows system folder
Dbmssocn.dll Windows system folder