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What is IP=FIRST in the LISTENER.ORA file ? (Doc ID 300729.1)

Last updated on FEBRUARY 27, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.7 to 18.3.0.0.0 [Release 11.1 to 18]
Oracle Net Services - Version 11.1.0.7 to 18.1.0.0.0 [Release 11.1 to 18.1]
Information in this document applies to any platform.

Purpose

Starting with Oracle10g 10.1.0.3 you will see the property IP=FIRST in the LISTENER.ORA file. What is IP=FIRST used for ?

LISTENER_VENUS =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = TCP)(HOST = <hostname>-vip)(PORT = 1521)(IP = FIRST))
        (ADDRESS = (PROTOCOL = TCP)(HOST = <hostname2>)(PORT = 1521)(IP = FIRST))
      )
    )
  )

Scope

This note is intended to clarify usage for the IP=FIRST statement, usually in RAC setups.

Details

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In this Document
Purpose
Scope
Details
References

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