Introduction

This chapter discusses various techniques for starting and stopping your WebLogic server, perhaps in greater detail than you're ready for at this point. If you're reading this book in sequence, what you have at this point is a basic installation, possibly including the Pet Store example that comes with the server. You are undoubtedly eager to get started, and that's why I'm putting this chapter here. There are some fairly simple techniques that will enable you to get your server up and running quickly, so that you can have an actual window to look at while reading the discussion in subsequent chapters, as well as something to play with.

However, once you're past the new-toy stage, the configuration of the server for production environments is a fairly intricate set of tasks .

WebLogic is typically started with a set of scripts. The default installation provides templates, but before they will work you need to modify them to fit your environment. The exact nature of the modifications depends on whether the server in question is an Administration server or a Managed server.

Administration vs. Managed Servers

A WebLogic server instance may be started as either an Administration server or a Managed server. Exactly one of the servers in a particular domain should be an Administration server. Managed servers are distinguished from Administration servers by the command-line options given to the server when it is started.

If a single server is started, it must be the Administration server. All Managed servers request configuration information from an Administration server when they are started.

Node Manager

If you have multiple servers running on separate machines (as in a network), the Administration server instance can have no direct control over the CPU on which the Managed server is running. If you have more than one or two servers in your installations this will quickly become inconvenient.

WebLogic ships with a separate program, called the Node Manager, that can be installed on the Managed servers. Node Manager monitors the network for instructions from the Administration server. Upon receiving instructions, it starts and stops the Managed servers as appropriate. This chapter also covers the configuration of the Node Manager.



BEA WebLogic Server Administration Kit
BEA WebLogic Server Administration Kit (Prentice Hall PTR Advanced Web Development)
ISBN: 0130463868
EAN: 2147483647
Year: 2002
Pages: 134
Authors: Scott Hawkins

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