Database Reference
In-Depth Information
LINK LOCaL BLOCK
169.254.0.0/16
—This is the “link local” block. it is allocated for communication between hosts on a single link.
hosts obtain these addresses by auto-configuration, such as when a DhCp server may not be found. This is a
16-bit address, class B subnet and can support up to 65,534 interfaces.
5
Column
PICKED_KSXPIA
indicates the type of Oracle clusterware implemented on the RAC cluster, where the
interconnect configuration is stored and the cluster communication method. The valid values in this column are
the following:
•
OCR = Oracle Clusterware is configured.
•
OSD = Operating System dependent, meaning a third party cluster manager is configured,
and Oracle Clusterware is only a bridge between Oracle RDBMS and the third party cluster
manager.
CLUSTER_INTERCONNECT
parameter in the instance.
•
CI = Interconnect is defined using the
•
GPnP = Configured using Grid Plug and Play in Oracle Database 11g Release 2 (11.2.0.2).
Check 2
From the O/S level, check if the configuration is correct by verifying if the right NIC cards are being used for data
transfer. This can be done using the
netstat
utility (
netstat -i
):
# netstat -i
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg
bond0 1500 0 7144585 0 893 0 10645931 0 0 0 BMmRU
bond0:1 1500 0 - no statistics available - BMmRU
bond0:3 1500 0 - no statistics available - BMmRU
bond0:4 1500 0 - no statistics available - BMmRU
bond1 1500 0 233067 0 0 0 609 0 0 0 BMmRU
bond2 9000 0 2857345 0 0 0 2630894 0 0 0 BMmRU
bond2:1 9000 0 - no statistics available - BMmRU
eth20 1500 0 7138790 0 893 0 10645931 0 0 0 BMsRU
eth21 1500 0 5795 0 0 0 0 0 0 0 BMsRU
eth22 1500 0 233067 0 0 0 609 0 0 0 BMsRU
eth24 9000 0 2857345 0 0 0 2630894 0 0 0 BMsRU
lo 16436 0 1527642 0 0 0 1527642 0 0 0 LRU
bond0:
is the public interconnect created using the bonding functionality.
bond0:1, bond0:3, bond0:4
are all SCAN VIPs.
bond2
: is the private interconnect alias created using the bonding functionality.
bond2:1
is the private interconnect VIP. Because VIPs are logical, there are no direct NICs
attached to them; hence, there is no traffic or statistics visible.
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