Martins Blog

Trying to explain complex things in simple terms

PRVF-4664 : Found inconsistent name resolution entries for SCAN name

Posted by Martin Bach on October 21, 2009

This has proven to be a worthy adversary – “PRVF-4664 : Found inconsistent name resolution entries for SCAN name”. The error has been thrown at the end of a 11.2.0.1 Grid Infrastructure installation, during the cluster verification utility run. Some bloggers I checked recommended workarounds, but I wanted the solution.

Some facts first:

  • Oracle Grid Infrastructure 11.2
  • RHEL 5.4 32bit
  • named 9.3.2
  • GPnP (grid plug and play) enabled

The error message from the log was as follows:

INFO: Checking name resolution setup for "rac-scan.rac.the-playground.de"...
INFO: ERROR: 
INFO: PRVF-4664 : Found inconsistent name resolution entries for SCAN name 
INFO: "rac-scan.rac.the-playground.de"
INFO: Verification of SCAN VIP and Listener setup failed

I have scratched my head, browsed the Internet and came to a metalink note (887471.1) which didn’t help (I didn’t try to resolve the SCAN through /etc/hosts).

So something must have been wrong with the subdomain delegation for DNS. And in fact, once that had been rectified using a combination of rndc, dig and nslookup, the error went away. In short, if your /etc/resolv.conf points to your nameserver (not the GNS server), and you can resolve hostnames such as the scan as part of the subdomain, the error will go away.

I previously blogged about this, you can check the setup here:

https://martincarstenbach.wordpress.com/2009/10/02/build-your-own-11-2-rac-system-part-ii-dns-dhcp-for-gns/

One Response to “PRVF-4664 : Found inconsistent name resolution entries for SCAN name”

  1. Hi Martin,

    It looks like this error is because the verification utility always checks the address via the configured DNS, even when it is defined in /etc/hosts and nsswitch.conf is configured for “files dns”.
    Cheers

    James

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