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You should not choose VIP adress randomly. http://docs.oracle.com/cd/E11882_01/install.112/e22489/prelinux.htm#sthref285
A virtual IP address for each node, with the following characteristics:
Static IP address
Configured before installation for each node, but not currently in use
On the same subnet as all other public IP addresses, VIP addresses, and SCAN addresses
Before Grid Infra. installation the VIP adresses should not be reachable by ping. After successfull Grid Infra. installation the VIP adresses should be reachable by ping.
I am also having problems in the installation of Oracle 11g clusterware in development environment. The issue arises after the execution of root.sh script on node 2. Now I am unable to start CRS services on Node 2 and it is giving following error while executing the status command:
CRS-4535: Cannot communicate with Cluster Ready Service
When I investigated the crsd.log, it is giving the following error on node 2.
OCR context init failure. Error : Proc-22: The OCR backend has an invalid format.
Also the output of ocrcheck command on node 2 is giving below error:
PROT-601: Failed to initialize ocrcheck
PROC-22: The OCR backend has an invalid format.
One more thing I would like to mention that there is no VIP address available on the network on Node 2. I am not sure, whether the VIP should be configured on NODE 2 by the clusterware installation itslef or it is just not required.
Are you using DNS for Scan IP. If so make Public VIP entries in Zone configuration at your DNS server.
Do not assign VIP manually to any adapter like eth0:0, eth0:1.. During installation it would be assigned automatically.
Post the output of */etc/hosts* file.
CentOS is not certified OS for Oracle Database installation.
Thanks for your response. While diagnosing, I realized that some cluster resources were not ONLINE on node 2 which were preventing me to assign VIP IP Address. I started the services & VIP IP added successfully but cluster still didn't worked. It seems to me that, I have done something wrong in the installation. So, I will do the installation again & will follow the document provided by you.