Install Java 1.8 JDK
Oracle Drivers and SQL*Plus
http://www.oracle.com/technetwork/database/enterprise-edition/downloads/112010-win64soft-094461.html
Microsoft
https://www.microsoft.com/en-ph/download/details.aspx?id=40784
Using Oracle 11g Installation
Extract tns_admin.zip and move to C:\tns_admin
SET TNS_ADMIN=C:\tns_admin as global variable for system
Extract win64_11gR2_client.zip
Run win64_11gR2_client\client\setup.exe
Accept "Environment does not meet minimum requirements."
Use default installation: C:\app\<username>\product\11.2.0\client_1
Extract win32_11gR2_client.zip
Run win32_11gR2_client\client\setup.exe
Accept "Environment does not meet minimum requirements."
Use default installation: C:\app\<username>\product\11.2.0\client_2
Verify Installation:
sqlplus web_owner@TSTWEB2
Install the 64-bit Drivers, and then the 32-bit Drivers right on top of it.
Make sure to install the ODBC connections in 32-bit
Use the Oracle in OraClient11g_home1 and NOT the Microsoft ODBC driver