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How to Modify Public Network Information including VIP in Oracle Clusterware (Doc ID 276434.1)

Last updated on SEPTEMBER 18, 2023

Applies to:

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
Oracle Database Backup Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Cloud Service - Version N/A and later
Information in this document applies to any platform.


The purpose of this note is to illustrate how to change a public hostname, public IP, a Virtual IP Address (VIP), VIP hostname or other VIP attributes in an Oracle Clusterware/Grid Infrastructure environment.


Oracle Database 10g and 11g use VIPs (Virtual IP) in clustered environments for clients to connect to the database. These VIPs are static IP addresses associated with (virtual) hostnames and resolved through DNS (except when using 11gR2 GNS).

During the installation of the Oracle Clusterware users are prompted to enter a Virtual IP and Virtual hostname for each of the node in the cluster. These are stored within the OCR (Oracle Cluster Registry) and different components within the HA framework depend on these VIPs. If for some reason the need arises to change either the VIP, the VIP hostname, or the subnet, netmask etc, this procedure should be followed.

For changes associated with private network/cluster interconnect, please refer to Note 283684.1


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In this Document
 Case I.   Changing public hostname
 Case II.  Changing public IP or VIP only without changing interface, subnet or netmask or changing MAC address only without changing anything else
 Case III. Changing public network interface, subnet or netmask
 Case IV. Changing VIPs associated with public network change
 Planning for VIP changes
 Gathering Current VIP Configuration
 Stopping Resources
 Modifying VIP and Its Associated Attributes
 Update the crsconfig_params
 Restarting Resources
 Case V. Change SCAN VIP associated with public network change

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