The nmConnect() Command Fails with the Following Error "Connection to the NodeManager failed due to 'Connection timed out (Read failed)" (Doc ID 2649639.1)

Last updated on JULY 31, 2023

Applies to:

Symptoms

The environment has the following setup:

Admin Server running on machine a.host.domain
Managed Server X running on machine x.host.domain
Managed Server Y running on machine y.host.domain

The Remote Node Manager status was showing as INACTIVE in the Weblogic Console > Environment -> Machines -> {machine} >Nodemanager > Monitoring tab.

The Remote Node Managers were running fine on Managed Server X host x.host.domain and Managed Server Y host y.host.domain.

Also the telnet/ping was working fine when done on Node manager hostname and port from Admin Machine.

The nmConnect() command runs works fine were executed from the Managed Server X host x.host.domain and Managed Server Y host y.host.domain.

However, the nmConnect() command fails with the timeout error when executed from Admin Server machine - a.host.domain.

Changes

Cause

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.