PRVF-5636 : The DNS response time for an unreachable node exceeded "15000" ms on following nodes

In this Document

Purpose

Details

References

This document is being delivered to you via Oracle Support's Rapid Visibility (RaV) process and therefore has not been subject to an independent technical review.

APPLIES TO:

Oracle Server - Enterprise Edition - Version 11.2.0.1 and later

Information in this document applies to any platform.

PURPOSE

The note explains what to look for when experiencing the following error:

PRVF-5636 : The DNS response time for an unreachable node exceeded "15000" ms on following nodes: racnode1

DETAILS

Cluster Verification (cluvfy or CVU) detects whether DNS is configured properly by looking up an unknown host and expecting the command to finish in less than 15 seconds.

$ nslookup unknown-not-reachable-node
Case 1: nslookup takes too long time

In below example, it takes over 18 seconds thus the error is generated:

$ time nslookup unknown-not-reachable-node

;; connection timed out; no servers could be reached

.

real 0m18.020s

user 0m0.001s

sys 0m0.005s

As nslookup is OS tool, please engage System/Network Administrator to find out why it takes so long and fix it.

REFERENCES

BUG:11775332 - CLUVFY FAILS WITH PRVF-5636 WITH DNS RESPONSE TIMEOUT ERROR

NOTE:1480242.1 - PRVF-5637 : DNS response time could not be checked on following
nodes