Change Node Manager port in Oracle WebLogic Server.

1. For a domain-based Node Manager, edit nodemanager.properties from below location

     DOMAIN_HOME/nodemanager/nodemanager.properties

2. On the Machines page, select the machine.

3. Select the Configuration tab.

4. Select the Node Manager tab.

5. Change the Listen Port to the new port number.

6. Click Save and restart nodemanager.