情况：部署程序在 IIS 7.5 windows server 2008 R2 64 bit OS，引用“Oracle.DataAccess.dll” 

运行程序会出现："Could not load file or assembly ‘Oracle.DataAccess‘ or one of its dependencies. An attempt was made to load a program with an incorrect format."

解决方式：设置IIS  app pool 允许 32bit.如下图： 

错误处理："Could not load file or assembly 'Oracle.DataAccess' or one of its dependencies. An attempt was made to load a program with an incorrect format.",布布扣,bubuko.com

错误处理："Could not load file or assembly 'Oracle.DataAccess' or one of its dependencies. An attempt was made to load a program with an incorrect format."