Book Image

IBM WebSphere Application Server 8.0 Administration Guide

By : Steve Robinson
Book Image

IBM WebSphere Application Server 8.0 Administration Guide

By: Steve Robinson

Overview of this book

Administrators require a secure, scalable, and resilient application infrastructure to support the development of JEE applications and SOA services. IBM’s WebSphere Application Server is optimized for this task, and this book will ensure that you can utilize all that this tool has to offer with the exciting new features of IBM WebSphere Application Server 8.0.IBM WebSphere Application Server 8.0 Administration Guide is fully revised with details of the new functionality of WebSphere Application Server 8.0, including the new installation GUI, managed deployment, and HPEL. With this book in hand, you will be equipped to provide an innovative, performance-based foundation to build, run, and manage JEE applications and SOA services.IBM WebSphere Application Server 8.0 has been tuned for higher performance out of the box, and numerous enhancements have been made to give you as an administrator more options for increasing runtime performance. This book will allow you to utilize all of these features, including HPEL logging and disabling WebSphere MQ Messaging. You will be taken through how to configure and prepare WebSphere resources for your application deployments, and by the end of IBM WebSphere Application Server 8.0 Administration Guide, you will be able to successfully manage and tune your WebSphere 8.0 implementation.
Table of Contents (19 chapters)
IBM WebSphere Application Server 8.0 Administration Guide
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

Class loaders


Class loaders are an integral part of the JVM code and are responsible for finding and loading class files both for the application server itself, and for applications. It is important that you understand class loaders and how they affect the JVM and deployed applications. Application developers and administrators must understand and consider the location of Java classes and Java resource files, and the class loaders used to access those files must also be able to make the appropriate class files available to deployed applications. The configuration of class loaders also affects the packaging of applications and their runtime behavior. In this book, we cannot completely cover all the issues and intricacies of class loaders. However, we will explain the essentials of class loading and what configuration elements you can use in the Administrative console to change class loading behavior.

Class loading basics

A simple and easy way to understand class loaders is to use the concept...