.NET连接Oracle出错的解决方法【System.Data.OracleClient requires Oracle client software version 8.1.7】

搞了个Oracle服务器，用MSPetShop连接Oracle，安装好后，浏览却提示如下错误：

【System.Data.OracleClient requires Oracle client software version 8.1.7】

不知道诈回事，Google了一下，原来是安装目录的Authenticated Users没有写入和修改权限，具体操作如下：

1. go to oracle installation folder, which is most likely “c:oracleora92”
2. right click and select properties
3. go to security tab
4. find Authenticated Users and select it
5. uncheck read and execute box in the permission
6. re-check read and execute
7. click OK