Oracle Node Manager brief overview

In this blog post I will provide a brief introduction on one of the important components of Oracle WebLogic Server called Oracle Node Manager. WebLogic Server instances are in production environment often highly distributed, usually across multiple domains, machines, or even geographic locations. Oracle Node Manager is intended to simplify and centralize control options over those distributed instances. It provides us with abilities to start, stop or restart Administration Server and various Managed Server instances from remote location using a graphical interface. Node manager is optional, but highly recommended in WebLogic Server environment. It is one of the key features of Oracle Cloud Application Grid technologies.

Node Manager can be set up to start manually or automatically. Manual start requires running Java based Node Manager or script-based Node Manager (only for UNIX and Linux systems) which is not recommended due to the fact that it lacks some key security features Java-based Node Manager has.  Java-based Node Manager can also be run as a Windows service or as an operating service on UNIX platforms, allowing it to start automatically whenever operating system is booted.

To be able to control a server instance we must obtain access to the server. Node Manager client can be local or remote and can be accessed from Administration Server instance using Administration Console or using custom Java Management Extension (JMX) utilities. Node Manager can also be accessed using WebLogic Scripting Tool (WLST) commands and scripts. This option allows controlling and retrieving information about Managed Server instances without running Administration Server.

 

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3 Comments for Oracle Node Manager brief overview

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