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How to Modify Private Network Information in Oracle Clusterware (Doc ID 283684.1)

Last updated on MAY 26, 2021

Applies to:

Oracle Database Cloud Service - Version N/A and later
Oracle Database - Enterprise Edition - Version to [Release 10.1 to 19]
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
Information in this document applies to any platform.


The purpose of this note is to describe how to change or update the private network (cluster_interconnect) information in Oracle Clusterware.

It may be necessary to change or update interface names, or subnet associated with an interface if there is a network change affecting the servers, or if the original information that was input during the installation was incorrect.   It may also be the case that for some reason, the Oracle Interface Configuration Assistant  ('oifcfg')  did not succeed during the installation.

Please refer to Note 276434.1 for modifying public network and VIP associated information
and refer to Note 1386709.1 for basics of IPv4 subnet and Oracle Clusterware.

Note: for Oracle Engineered system (Exadata) and Oracle Database Appliance (ODA), please do not make such changes following this note.



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In this Document
 Case I. Changing private hostname
 Case II. Changing private IP only without changing network interface, subnet and netmask
              or changing private IP MAC address only without changing anything else
 Case III. Changing private network MTU only
 Case IV. Changing private network interface name, subnet or netmask
 A. For pre-11gR2 Oracle Clusterware
 B. For 11gR2 Oracle Clusterware and 12c Cluster without Flex ASM
 C. For 12c and 18c Oracle Clusterware with Flex ASM
 Something to note for 11gR2+
 Notes for Windows Systems
 Ramifications of Changing Interface Names Using oifcfg
 Oifcfg Usage
 Case V. Add or remove cluster_interconnect for 11gR2 and above with HAIP

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