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Oracle® Clusterware Administration and Deployment Guide
11g Release 2 (11.2)

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D Oracle Interface Configuration Tool (OIFCFG) Command Reference

The Oracle Interface Configuration Tool (OIFCFG) command-line interface helps you to define and administer network interfaces. You can use OIFCFG commands Oracle Clusterware environments to:

This appendix includes the following topics:

Starting the OIFCFG Command-Line Interface

Before you invoke OIFCFG, ensure that you have started Oracle Clusterware on at least the local node and preferably on all nodes if you intend to include the -global option on the command.


To change the global network interface, Oracle Clusterware must be running on all cluster nodes.

Run OIFCFG from the Grid_home/bin/ directory as the user who installed the Oracle Clusterware software. For example:

$ ./oifcfg

Run the oifcfg -help command to display online help for OIFCFG.

$ ./oifcfg -help

Name:  oifcfg - Oracle Interface Configuration Tool.

Usage:  oifcfg iflist [-p [-n]]
        oifcfg setif {-node nodename | -global} {if_name/subnet:if_type}...
        oifcfg getif [-node nodename | -global] [ -if if_name[/subnet] [-type if_type]
        oifcfg delif {{-node nodename | -global} [if_name[/subnet]] [-force] | -force}
        oifcfg [-help]
 nodename       - name of the host, as known to a communications network
 if_name        - name by which the interface is configured in the system
 subnet         - subnet address of the interface
 if_type        - type of the interface {cluster_interconnect | public}

Summary of the OIFCFG Usage

This section contains the following topics:

OIFCFG Command Format

oifcfg iflist [-p [-n]]
oifcfg setif {-node nodename | -global} {if_name/subnet:if_name}...
oifcfg getif [-node nodename | -global] [ -if if_name[/subnet] [-type if_type]]
oifcfg delif {{-node nodename | -global} [ -if if_name[/subnet]] [-force] | -force}
oifcfg [-help]

OIFCFG Commands

You can enter any of the OIFCFG commands listed in Table D-1.

Table D-1 OIFCFG Commands

Command Description

oifcfg iflist [-p [-n]]

Shows the available interfaces that you can configure with setif. The iflist command queries the operating system to find which network interfaces are present on this node. You can specify two options with this command:

  • -p: Displays a heuristic assumption of the interface type (PRIVATE, PUBLIC, or UNKNOWN)

  • -n: Displays the netmask

oifcfg setif

Sets an interface type (public or cluster interconnect) for an interface.

oifcfg getif

Displays the interfaces for which an interface type has been defined with the setif command, along with the type for that interface.

oifcfg delif

Deletes the stored network configuration for global or node-specific interfaces. You can use the -force option without specifying the -node or -global options to delete the stored network configurations from all nodes in the cluster.

OIFCFG Command Parameters

This section lists the parameters for the OIFCFG commands. Note that some parameters are optional, depending on which command you run.

-node nodename

The name of the Oracle Clusterware node as listed in the output from the olsnodes command. Appendix C, "OLSNODES Command Reference" describes the OLSNODES command.


A network interface can be stored as a global interface (as reported by the iflist command) or as a node-specific interface:

  • An interface is stored as a global interface when all of the nodes of an Oracle Real Application Clusters (Oracle RAC) cluster have the same interface connected to the same subnet. The global interface (and configuring all nodes with the same network interface for each public subnet and the same network interface for each private subnet) is not only the recommended configuration, but it is also the default installation configuration.

  • An interface can be stored as a node-specific (local) interface.


    Oracle currently does not support having different network interfaces for each node in the cluster. The best practice is to configure all nodes with the same network interface for each public subnet and the same network interface for each private subnet.
-if if_name

The name by which the interface is configured in the system.


The subnet number of the interface.

-type if_type

The type of interface: public or cluster_interconnect.


Display online help for OIFCFG commands.

OIFCFG Usage Notes

OIFCFG Examples

The following examples show some common uses for the OIFCFG commands.

Example 1   Listing the Names of Network Interfaces

You can use OIFCFG to list the interface names and the subnets of all of the interfaces available on the local node by executing the iflist keyword, as shown in this example:

oifcfg iflist
Example 2   Retrieving Network Information

You can also retrieve specific OIFCFG information with a getif command.

For example, after you install Oracle Clusterware, you can verify that the public and cluster interconnect have been set to the desired values by entering the following command:

$ oifcfg getif

This command returns values for global public and global cluster_interconnect, similar to the following:

eth0 global public
eth1 global cluster_interconnect
Example 3   Storing a Global Interface

To store an interface, use the setif keyword. For example, to store the interface eth0, with the subnet, as a global interface (to be used as an interconnect for all of the Oracle RAC instances in your cluster and Oracle Clusterware), use the command:

oifcfg setif -global eth0/


Ensure that all nodes are running when you run the setif command because Oracle cannot update Grid Plug and Play profiles on nodes that are not running.
Example 4   Deleting the Stored Interface

Use the oifcfg delif command to delete the stored configuration for global or node-specific interfaces. A specific node-specific or global interface can be deleted by supplying the interface name, with an optional subnet, on the command line.


If you only enter oifcfg delif, with no other arguments given on the command line, then OIFCFG deletes all interfaces on all nodes in the cluster.

For example, the following command deletes the global interface named eth1 for the subnet

oifcfg delif -global eth1/

The following command deletes all of the global interfaces assigned with OIFCFG:

oifcfg delif -global

Footnote Legend

Footnote 1: Cache Fusion is a diskless cache coherency mechanism that provides copies of blocks directly from a holding instance's memory cache to a requesting instance's memory cache.