I have the same problem as the poser of this question:

[System.Data.OracleClient requires Oracle client software version 8.1.7](https://stackoverflow.com/questions/447983/system-data-oracleclient-requires-oracle-client-software-version-8-1-7)

I have made the changes to the security settings on the oracle folder, and have to wait for the server to reboot overnight.

My question is why is this reboot necessary? I am getting the same error after making the changes without rebooting, so I don't doubt that it is. Is there an alternative to rebooting the server, like `IISRESET`? (Although I wouldn't be allowed to run IISRESET during the day either)