I use Microsoft Visual Studio Express 2012 for Web and Oracle database 11g in Window 8.
When I use GridView to connect the database, I get following error.
Oracle Client and networking components were not found. These components are supplied by Oracle Corporation and are part of the Oracle Version 7.3.3 or later client software installation.
Provider is unable to function until these components are installed.
How can I solve this problem?
by installing the oracle drivers http://www.oracle.com/technetwork/database/windows/downloads/index-101290.html
I have found this answer from here, hope it solves your issue:
To find out the reason and solutions for this error follow the following steps
Try a test connection in oracle's sql plus utility. If the connection fails you have a bad installation or configuration of oracle client components.
If the oracle is first installed on IIS you should reboot at once.
If theire is multiple copies of OCIW32.dll you have to make sure that there is only one copy of OCIW32.dll which should be in /Bin folder of the oracle home folder.
Add the IUSR_machine name account and the IWAM_machine name account to the Oracle home folder. Give both accounts full control.
To do this, right-click on the Oracle home folder in Windows Explorer. Click Properties, and then click the Security tab. Add the appropriate accounts and then give them full control. Restart your computer.
