Weblogic Terminology

Domain: 


The basic administrative unit of a Weblogic Server Installation is a Domain. A logically related group of Weblogic server resources that managed as a unit.

Server:

A server is a instance of  weblogic.Server executing in a JVM. A server runs on a designated Machine(node)and  has dedicated amount of RAM.

Machine:

Machine is a computer that hosts one or more Weblogic Sever.

Administration Server:

An Administration Server is the central point of control for a domain. It Stores the configuration information and logs for a domain and runs the Weblogic administration console.

Managed Server:

A managed server is any server in a domain that is not a admin server. It contacts the admin server for configuration information and runs business application.

Cluster:

A cluster is a logical group of Weblogic servers. It provide automatic fault tolerance, Load-balancing and High availability.

Node Manager:

It's a daemon which start/stop/restart servers in a domain remotely.

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