Database Reference
In-Depth Information
If you plan to use Oracle 12c Flex ASM, you need to specify the network interface for ASM network, which allows
ASM clients to connect with the remote ASM instances. In Oracle 12cR1, you can have ASM network and Private
network share the same network interfaces. Figure 9-13 shows that the ASM network and the private network share
the same network interfaces, eth1 and eth2.
Verify Network Configurations
After a successful installation of the Grid Infrastructure, you can verify the network configuration.
On the knewrac cluster, the SCAN name with the VIPs dynamically generated by DHCP are as follows:
$ srvctl config scan
SCAN name: knewrac-scan.kcloud.dblab.com , Network: 1
Subnet IPv4: 172.16.0.0/255.255.0.0/eth0
Subnet IPv6:
SCAN 0 IPv4 VIP: -/scan1-vip/172.16.150.40
SCAN name: knewrac-scan.kcloud.dblab.com , Network: 1
Subnet IPv4: 172.16.0.0/255.255.0.0/eth0
Subnet IPv6:
SCAN 1 IPv4 VIP: -/scan2-vip/172.16.150.83
SCAN name: knewrac-scan.kcloud.dblab.com , Network: 1
Subnet IPv4: 172.16.0.0/255.255.0.0/eth0
Subnet IPv6:
SCAN 2 IPv4 VIP: -/scan3-vip/172.16.150.28
Notice that Oracle 12cR1 adds support for the IPv6 protocol for network configuration.
The VIPs for the public hosts on owirac-cluster cluster are as follows:
$ srvctl config vip -n knewracn1
VIP exists: network number 1, hosting node knewracn1
VIP IPv4 Address: -/knewracn1-vip/172.16.150.37
VIP IPv6 Address:
$ srvctl config vip -n knewracn2
VIP exists: network number 1, hosting node knewracn2
VIP IPv4 Address: -/knewracn2-vip/172.16.150.182
VIP IPv6 Address:
Network Configuration in Clusterware
Network configuration is stored in OCR, and Clusterware manages the network using the configuration stored in
the Clusterware. Configuration details about both public and private networks are stored in the form of resources in
Clusterware. Clusterware monitors network interfaces for high availability reasons.
Public Network
VIP addresses and listeners are configured in a public network. Three types of Clusterware resources with
dependency between them are configured to track the network and its status. Figure 9-14 shows three types of
resources implementing public network.
 
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