Influencing Interconnect Processing

After your interconnect is operative, you cannot significantly influence its performance. However, you can influence an interconnect protocol's efficiency by adjusting the interprocess communication (IPC) buffer sizes.

In Oracle Clusterware, the Oracle Cluster Registry (OCR) stores your system's interconnect information. To identify the interconnect for your cluster, use the Oracle Interface Configuration (OIFCFG) command-line utility oifcfg getif command, or the OCRDUMP utility. You can then change the interconnect that you are using by running an OIFCFG command.

Although you rarely need to set the CLUSTER_INTERCONNECTS parameter, you can use it to assign a private network IP address, or a network interface card (NIC). For example:

CLUSTER_INTERCONNECTS=10.0.0.1

If you are using an operating system-specific vendor IPC protocol, then the trace information may not reveal the IP address.

Note:

You can also use OIFCFG command to assign private network or private IP addresses.
With Oracle Clusterware releases after Oracle Clusterware 12c release 2 (12.2), you can assign either IPv4 or IPv6 addresses to multiple private networks. However, you must choose one or the other protocol, and you must and use that protocol for all of the private networks in the cluster.