Oracle Net Client

Install Oracle Net Client on the server for web applications and services. If the server for web applications and services is a 64-bit machine, both the 32-bit and 64-bit Oracle Net Client must be installed. If the server for web and services is a 32-bit machine, then only the 32-bit client is required.

First install the 64-bit Oracle Net Client.
Then install the 32-bit Oracle Net Client.

By following this order, the 32-bit path will precede the 64-bit path in the environment.

Checking the environment path

Select the Start button in the taskbar, and then navigate to the Control Panel.
In the Control Panel, select System and Security, and then select System.
In the System dialog box, select Advanced system settings.
In the System Properties dialog box, select Environment Variables.
In the Environment Variables box, mark the Path (C) and then select Edit (D).
Copy and paste the text in the Variable Value field into any text editor.
Verify that the 32-bit path precedes the 64-bit path in the string. If the 64-bit path comes first, uninstall both clients and follow the instructions in this section again.
E
;C:\OracleClients\.....\client_32\bin

F
;C:\OracleClients\.....\client_64\bin