February 2004
Intermediate to advanced
848 pages
27h 25m
English
Content preview from WebLogic: The Definitive GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 20. JMX
The Java Management Extensions (JMX) specification defines the architecture, services, and API for the distributed management of resources using Java. JMX can be used to instrument everything from network hardware to applications, enabling you to build your own applications that manage these instrumented resources. This chapter focuses on how WebLogic Server is itself instrumented, and how this enables you to create applications that monitor and manage various aspects of a WebLogic domain and its deployed applications.
WebLogic’s JMX implementation, and the specification itself, comprise three levels: an instrumentation, agent, and distribution level. The instrumentation level provides a design for implementing JMX-manageable resources. Within WebLogic, the manageable resources include just about everything, ranging from connection pools and security realms to the domain configuration and the state of a deployed application. The instrumentation of a resource is provided by MBeans, which expose an interface for the management and control of that resource. For instance, the MBeans for a JDBC connection pool expose attributes such as the pool’s name and size, as well as operations such as resetting the pool or shutting it down. Runtime statistics are also made available, such as the maximum number of connections to the pool and the connection delay time.
The agent level builds upon the instrumentation level to provide a standardized way of managing MBeans. In WebLogic, ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.