System. Data. oracleclient requires Oracle client software 8.1.7 or later.

Problem
After ASP. NET and Oracle9i clients are installed, the following information is received when you access the Oracle database using system. Data. oracleclient:

System. Data. oracleclient requires Oracle client software version 8.1.7 or greater.

Cause
When the Oracle 9i Release 2 client is installed in the NTFS partition of windows, the Security Authentication Settings are incorrect. As a result, the authenticated users user on the local machine cannot see the contents in the ORACLE_HOME directory. net to authenticated users permission to use system. data. the preceding error is reported when the oracleclient connects to the Oracle database.

Solution
To solve the preceding problem, you only need to grant the Authenticated Users group the permission to access the Oracle Home Directory.

1. log on to Windows as administrator.
2. Start the window resource browser to find the ORACLE_HOME directory, for example, C: \ oracle \ ora92.
3. Right-click the menu and select share and security for the directory (click Properties in Win2000)
4. Click the "Security" tab.
5. Click "Authenticated Users" in the group and user name list.
6. In the user's permission list, set the "read and run" option box to unselected.
7. Click "read and run" again and set it to the selected status.
8. Click the "advanced" button and check whether "Authenticated Users" has the "read and run" permission in the permission project and applies it to "this folder, and subfolders and files ". if not, double-click the folder and make sure that the permission can be applied to the folder and subfolders and files ". this item is very important and you must check it.
9. Click "OK ".
10. Restart to make all changes take effect.