Starting with Oracle RAC 11.2.0.2, Oracle has introduced Redundant Interconnect Usage feature based on a multiple-listening-endpoint architecture, in which a highly available virtual IP (the HAIP) is assigned to each private network (up to a total number of 4 interfaces).

Oracle recommends customers to use link aggregation, NIC bonding, or Redundant Interconnect Usage for providing high availability to interconnects.

 

Applies To

Linux and UNIX

  In Oracle RAC 11.2.0.2 and later versions, if PrivNIC/MultiPrivNIC is configured to manage the cluster interconnect private IP addresses, and if a private link fails, the PrivNIC/MultiPrivNIC agent fails over the IP addresses configured on the failed link to the next available link. This causes the ora.cluster_interconnect.haip resource to go offline. The Oracle cluster synchronization services daemon (ocssd) fails and restarts, but does not join the cluster till Oracle Grid Infrastructure is restarted on all the nodes. Therefore, SF Oracle RAC no longer supports the use of PrivNIC/ MultiPrivNIC to manage high availability of the interconnects.