Today I encountered an old Asp.net + Oracle problem, solved the old problem, and found a new problem.

Today, when I used Asp.net as a WAP website, I encountered the following problems:

09:35:59-2147467259
09:35:59 system. Data. oledb. oledberrorcollection
At 09:35:59, the Oracle client and network components were not found. These components are provided by Oracle and are part of Oracle 8i (or higher) client software installation.

These components cannot be used before they are installed.Program.
09:35:59 Microsoft ole db provider for Oracle
09:35:59 at system. Data. oledb. oledbconnection. processresults (int32 hr)
At system. Data. oledb. oledbconnection. initializeprovider ()
At system. Data. oledb. oledbconnection. open ()
At WAP. Data. getdata (int32 servicetype, string ID, string & content)

This problem has been solved before, but is not recorded. I forgot to go to Google to search for information about the permission to access the bin directory of the Oracle installation directory, you can solve this problem by adding the ASPnet and iuser_machine users and giving them the execution permission. After doing so, you can solve the problem. However, these users are deleted and can still be used normally. Is it because the permission takes effect until the next start? Shouldn't it, because the machine is not restarted when the user is added, strange?