Identify the incorrect statement regarding private interconnect in an Oracle Clusterware and RAC
environment.
A.
With Oracle RAC 11.2.0.2 and later versions, Redundant Interconnect Usage can be used
instead of Network Interface Card (NIC) bonding.
B.
NIC bonding for the Oracle RAC interconnect is not required.
C.
If you use bonded NIC cards, they should be on the same subnet.
D.
If you use NIC cards, they must be on different subnets.
Explanation:
You can bond separate interfaces to a common interface to provide redundancy, in
case of a NIC failure, but Oracle recommends that you do not create separate interfaces for
Oracle Clusterware and Oracle RAC. If you use more than one NIC for the private interconnect,
then Oracle recommends that you use NIC bonding. Note that multiple private interfaces provide
load balancing but not failover, unless bonded.
Correct is A.
D would be the right one.
Redundant Interconnect Usage requires a complete Oracle Grid Infrastructure and Oracle Database Release 2 (11.2.0.2) or higher stack. Earlier release Oracle Databases cannot use this feature, and must use third-party NIC bonding technologies. If you consolidate different database releases in one cluster, and use databases before Oracle Database 11g Release 2 (11.2.0.2), then you may require both technologies.