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Finally solve the problem that. net prompts when connecting to the Oracle database that the object reference is not set to the instance of the object.

Source: Internet
Author: User
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Installed Oracle client,. netProgramRemotely connect to the Oracle database, but always prompts con. open () has not set the object reference to the instance of the object. It has been found on the internet for a long time, and I have explored it for a long time and tried various solutions. including reinstalling Oracle several times and adding the asp_net permission, the problem still cannot be solved. huang Tian was quite worried. He suddenly saw someone in Baidu saying that he wanted the next patch. So he went to Microsoft's official website to download it. net framwork SP1 Patch, address:
Http://www.microsoft.com/downloads/details.aspx? Familyid = a8f5654f-088e-40b2-bbdb-a83353618b38 installed, the problem is resolved immediately.

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