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How to Validate Network and Name Resolution Setup for the Clusterware and RAC (Doc ID 1054902.1)

Last updated on MAY 09, 2023

Applies to:

Oracle Database Cloud Service - Version N/A and later
Oracle Database - Standard Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Generic UNIX
Generic Linux


Cluster Verification Utility (aka CVU, command or cluvfy) does very good checking on the network and name resolution setup, but it may not capture all issues. If the network and name resolution is not setup properly before installation, it is likely the installation will fail; if network or name resolution is malfunctioning, likely the clusterware and/or RAC will have issues. The goal of this note is to provide a list of things to verify regarding the network and name resolution setup for Grid Infrastructure (clusterware) and RAC.


This document is intended for Oracle Clusterware/RAC Database Administrators and Oracle Support engineers.


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In this Document
 A. Requirement
 B. Example of what we expect
 C. Syntax reference
 D. Multicast
 E. Runtime network issues
 F. Symptoms of network issues
 G. Basics of Subnet

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