7. What is Admin Server
•
Only ONE per domain.
•
Controls start and stop of other servers in the Domain.
•
Manages the creation of JDBC, JMS and other
resources.
•
Manages the deployment to servers in the domain.
•
In development we use Admin Server for Deployment
and Testing. This is usually done via the Integrated
WebLogic instance installed within JDeveloper.
8. What is a Managed Server
•
Managed Server is an instance of WebLogic Server
Managed by an Admin Server.
•
Managed Servers in a Domain are Independent
of each other, in every aspect.
•
Applications Deployed in a Managed Server do not
share any resources, including JDBC and JMS
Connections and Connection Factories.
9. Admin & Managed Server
•
On Startup, the Managed Server synchronizes the
configuration with
•
Configuration changes are send over to the
Managed Server from the Admin Server.
12. Node Manager
•
Process to Start/Stop Managed Server instance on
a Physical Machine.
•
Connect to Admin Server and starts/stops
WebLogic instance based
•
Independent of Domain
16. Benefits of WebLogic Cluster
•
Scalability
•
•
Even distribution of jobs
•
•
Load Balance
Multiple copies of an object that can do a particular job must be
available
High-Availability
•
Failover
•
When a object processing a job becomes unavailable, a copy of
the object elsewhere takes over and finishes the job
