How to Build 18c RAC – 1 of 4 – Preparing Two Database Servers

Posted on
Network Design for RAC Let’s see the network design of our cluster database. [root@primary01 ~]# vi /etc/hosts # Public primary01 primary02 # Private primary01-priv primary02-priv # VIP primary01-vip primary02-vip # SCAN # primary-cluster-scan # primary-cluster-scan # primary-cluster-scan […]

Why Don’t We Explicitly Bind VIP and SCAN into NIC

Posted on
It’s because Oracle clusterware will bind them automatically and dynamically. I think we should try to figure out the interface configurations.First, let’s see what interfaces we have now.[root@primary01 ~]$ ll /etc/sysconfig/network-scripts/ifcfg-*-rw-r–r–  1 root root 314 May 30  2016 /etc/sysconfig/network-scripts/ifcfg-eth0-rw-r–r–  1 root root 311 May 30  2016 /etc/sysconfig/network-scripts/ifcfg-eth1-rw-r–r–. 1 root root 254 Jul 22  2014 /etc/sysconfig/network-scripts/ifcfg-loBut […]

How to Change Subnet of Grid

Posted on
Oracle 12c uses 4 types of IP addresses to configure network of RAC:Public IPPrivate IPVirtual IPSCAN IPIn which, Public IP, Virtual IP and SCAN IP are in the same subnet. Up to 4 pairs of Private IP can be set in RAC, which should be in another subnet and used for interconnect redundancy to secure […]