You must have a valid Oracle Support contract and login credentials to access this site.

When running the Oracle Universal Installer (OUI), the user will be presented with four installation types. Choosing the correct one is vital for application compatibility.

If you have a valid Oracle support contract:

Oracle generally only provides the base release ( 11.2.0.1 ) on their public Technology Network. You would then apply the 11.2.0.4 patch set on top of it. ⚠️ Important Considerations

The official way to get 11.2.0.4 is through My Oracle Support . This requires a valid support contract and an Oracle account.

You must have a valid Oracle Support Contract (CSI) to log in and download this version. 3. Compatibility & Support Status

On a 64-bit OS, you must manage 32-bit ODBC drivers using the specific utility located at C:\Windows\SysWOW64\odbcad32.exe Database Administrators Stack Exchange file for database connections? Instant Client for Windows 32-bit - Oracle