Read the following notes if you are using partitions in a scenario where your Exalogic machine is connected to an Oracle Exadata Database Machine on the same InfiniBand fabric:
Oracle Exadata Database Machine currently uses the default InfiniBand partition only. Therefore, Oracle Exadata Database Machine nodes are full members of the default partition.
If your Exalogic machine is connected to the Oracle Exadata Database Machine on the same InfiniBand fabric, ensure that all Exalogic compute nodes are limited members of the default partition. By default, all Exalogic compute nodes are full members of the default partition. To make an Exalogic compute node a limited member of the default partition, add the port GUIDs of the compute node as limited members of the default partition. In addition, ensure that IPoIB is enabled on the default partition.
Exalogic nodes as limited members of the default partition will not be able to communicate with any other Exalogic node in the default partition. However, client access to Oracle Exadata Database Machine is provided via IPoIB in the default partition.
You must disable Subnet Manager (SM) on all InfiniBand switches that are not using firmware 2.0.4 or above. Exalogic's InfiniBand switches use firmware versions 2.0.4 or above for partitioning support, and SM should run on one of Exalogic's InfiniBand switches.