No DNS for SCAN

Planned for Installation of Oracle 11g R2 RAC on Solaris 10.
My question is Which details to be entered for SCAN NAME and SCAN PORT during Grid Infrastructure installation ? because we don't have DNS configured.
Will the installation goes on if SCAN NAME and SCAN PORT not entered?
I have decided to go with /etc/hosts for virtual,public and private IPs, that will follow method of previous releases.
Thanks,
Edited by: 836332 on Feb 12, 2012 6:02 AM
Edited by: 836332 on Feb 12, 2012 6:03 AM

Hi,
I don't think you can have the SCAN IP blank. For test setup I've put one ip to be used as the scan ip in the /etc/hosts on all nodes in the rac and installation went ahead.
Even when ip is set on /etc/hosts it could be resolved using nslookup otherwise a warning is showing during installation.
Follwing metalink notes might give more details
PRVF-4664 PRVF-4657: Found inconsistent name resolution entries for SCAN name [ID 887471.1]
and other one's ID is 1212703.1 mentions the multicast requirements.
Haven't encountered this myself yet but found the below on
http://www.oracle-base.com/articles/11g/OracleDB11gR2RACInstallationOnOEL5UsingVirtualBox.php#oracle_installation_prerequisites
"Note. The SCAN address should not really be defined in the hosts file. Instead is should be defined on the DNS to round-robin between 3 addresses on the same subnet as the public IPs. For this installation, we will compromise and use the hosts file. *This is not possible if you are using 11.2.0.2 onward."*
Edited by: asanga on 12-Feb-2012 06:44
Edited by: asanga on 12-Feb-2012 06:46

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