Can not obtain Oracle client information from registry

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       "Can not obtain Oracle client information from registry. Make sure that Oracle Client Software is installed, or use Direct mode of connecting to server."在使用Devart访问Oracle的时候,突然conn无法open了,报出这个错误,原因是把编译环境给由4.5更换为2.0后引起的,切换回去后也不行了,一直百思不得其解,后来google到原因了。具体解决方式见下:This problem comes to the surface when you have installed a 32-bit Devart driver together with the 32-bit Oracle client on a 64-bit system.

When you have this combination, you need to make sure the build options of your .NET application/unit test is set to X86. By default, the build option will be set to AnyCPU. If this is the case, you will receive the above error.

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