December 2002
Intermediate to advanced
928 pages
85h 29m
English
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Three-Tier Configuration
When Enterprise Manager is run on a three-tier architecture, the components are:
- Enterprise Manager Console
Can be run from a browser, personal computer, or Unix workstation. The Console is run from a browser on Windows machines and accesses the Enterprise Manager home page, which is available at the URL:
http://<webserver hostname>.<port_number>
with the default port number of 3339. Note that not all of the functionality of the Enterprise Manager Console is available from a browser.
- Oracle Management Server
Runs on a middle tier of machines and includes a repository. The Oracle Management Server is responsible for implementing the job system, event system, and groups. You can have multiple Oracle Management Server servers for redundancy and load balancing. The Oracle Management Server uses a repository, which is an Oracle database.
- Intelligent Agents
Run on each database server managed by the Oracle Management Server, implement tasks as local jobs, and monitor the state and operations of the database instances on the server. Intelligent Agents operate asynchronously with the Oracle Management Server. For instance, if a job is scheduled from a client, the Oracle Management Server passes the job off to the Intelligent Agent for the target database. Even if there is a network interruption between the Oracle Management Server machine and the target database, the job will still run on the target server.
Jobs can be run on target nodes via Intelligent Agents through ...
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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.