IB is a network architecture for the large-scale interconnection of computing and I/O nodes through a high-speed switched fabric. To operate IB on an Oracle server, you need an IB HCA (the adapter) and an IB software stack.
These Linux versions are supported with UEK4:
Oracle Linux 6.7 and newer
Oracle Linux 7.1 and newer
OVM 3.4.1
For the latest information on UEK4, refer to the Oracle Linux Release Notes for Unbreakable Enterprise Kernel Release 4 at https://docs.oracle.com/cd/E52668_01/E69348/html/index.html.
For the latest list of supported platforms and operating systems, refer to the Oracle Dual Port EDR InfiniBand Adapter Product Notes. This document is available at http://www.oracle.com/goto/dual_port_qdr_infiniband_m4/docs.