Changing OPMN Ports (ONS Local, Request, and Remote)

Changing OPMN Ports (ONS Local, Request, and Remote)

You might need such a scenario if you have two opmn processes in a Middleware home. In my case I had one opmn process taking care of OID and another taking care of Web Tier. So I got to change the ports for one of the opmn process for both processes to start simultaneously.


This section describes how to change any of the following port numbers:
ONS Local port
ONS Request port
ONS Remote port

To change these ports:

A. Stop OPMN, and all OPMN-managed processes:

(UNIX) ORACLE_INSTANCE/bin/opmnctl stopall

(Windows)ORACLE_INSTANCE\bin\opmnctl stopall

B. Open the opmn.xml file:

(UNIX) ORACLE_INSTANCE/config/OPMN/opmn

(Windows) ORACLE_INSTANCE\config\OPMN\opmn

C. Under the <notification-server> element, modify the local, remote, or request parameter, depending on the port you are changing, in the <port> element, and then save the file.

For example:

<port local="6101" remote="6201" request="6004"/>

D.Start OPMN, and all OPMN-managed processes:

(UNIX) ORACLE_INSTANCE/bin/opmnctl startall

(Windows) ORACLE_INSTANCE\bin\opmnctl startall

Now you have to unregister OPMN with FMW and again register, so that you will not lose your ability to manage OPMN components (here OID, OVD, OHS) with the help of EM, as a result of changing the ports.

C:\Oracle\Middleware\asinst_1\bin>opmnctl unregisterinstance -adminHost localhost -adminPort 7001 -adminUsername weblogic

Command requires login to weblogic admin server (localhost):

  Username: weblogic

  Password:

Unregistering instance

Command succeeded.

C:\Oracle\Middleware\asinst_1\bin>opmnctl registerinstance -adminHost localhost -adminPort 7001 -adminUsername weblogic

Command requires login to weblogic admin server (localhost):

  Username: weblogic

  Password:

Registering instance

Command succeeded.

After the successful registration, the instance.properties file and ports.prop file gets updated, with the registration information and latest ports information respectively!