The 64-bit client is specifically required when:

To obtain the full 11.2.0.4 client officially, you must use one of the following portals:

Oracle Client 11.2.0.4 Download 64 Bit !full! -

The 64-bit client is specifically required when:

To obtain the full 11.2.0.4 client officially, you must use one of the following portals: