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,
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The MBean Architecture
Every WebLogic instance owns an MBean Server that hosts a number of MBeans. The MBean Server acts as a registry for the MBeans and provides services for accessing and manipulating MBeans running on the server. Because a WebLogic domain may be distributed across multiple machines with differing deployments and domain resources targeted to different servers, the MBean Server for each WebLogic instance will hold different types of MBeans. For instance, the runtime statistics for a JDBC connection pool on a server can be obtained only from an MBean running on that server. WebLogic makes a distinction between three different sets of MBeans:
- Configuration MBeans
These expose attributes and operations for the configuration of a resource.
- Runtime MBeans
These provide information about the runtime state of a resource.
- Security MBeans
These reflect the SSPIs, providing direct access to the configuration of WebLogic’s security framework.
To fully understand the MBean architecture as implemented in WebLogic, you need to understand the different types of MBeans and how WebLogic distributes these MBeans across MBean Servers within a domain.
Configuration MBeans
A Configuration MBean holds the configuration for a managed resource or service within a WebLogic domain. WebLogic captures the configuration settings for all kinds of domain resources and services: web servers, clusters, JDBC connection pools, J2EE components (EJBs, web applications, resource adapters), JMS destinations, ...
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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.
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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.