SCAN IP

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

by Ed Chen
December 15, 2018February 3, 2020
4 Comments

Network Design for RAC Let's see the network design of our cluster database. [root@primary01 ~]# vi /etc/hosts # Public 192.168.10.11 primary01 primary01.example.com 192.168.10.12 primary02 primary02.example.com… Read More »

How to Add a Cluster Listener on Second Network to Grid

by Ed Chen
January 3, 2017March 26, 2019

I assume that you have added the second network to the grid infrastructure. Let's continue our work. Make sure the second network is available in… Read More »

How to Add a Subnet to Grid

by Ed Chen
January 2, 2017August 3, 2018

Servers that have multiple network interfaces may offload the traffic by adding another subnet to grid infra. In this post, I demonstrate how I add… Read More »

How to Relocating SCAN VIP and Listeners

by Ed Chen
January 1, 2017August 3, 2018

Sometimes, we may find the scan vip and listeners are all located at one node.[grid@primary01 ~]$ ps -ef | grep lsnrgrid 6077 … Read More »

How to Add a SCAN VIP to Grid

by Ed Chen
December 23, 2016August 3, 2018

Looking up SCAN name on DNS before adding a SCAN VIP[root@primary01 ~]# nslookup primary-cluster-scanServer: 10.0.0.199Address: 10.0.0.199#53Name: primary-cluster-scan.example.comAddress:… Read More »

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

by Ed Chen
December 8, 2016August 3, 2018

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… Read More »

How to Change Subnet of Grid

by Ed Chen
January 16, 2016August 3, 2018

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… Read More »