Wednesday Oct 23, 2013

Weblogic - Dynamic Clustering in practice by Andy Overton

The latest version of Weblogic (12.1.2) includes support for Dynamic Clustering. For more details on what else is new in 12.1.2 see my previous blog post. In this blog post I will look at setting up a dynamic cluster on 2 machines with 4 managed servers (2 on each). I will then deploy an application to the cluster and show how to expand the cluster.

What is a dynamic cluster?

A dynamic cluster is any cluster that contains one or more dynamic servers. Each server in the cluster will be based upon a single shared server template. The server template allows you to configure each server the same and ensures that servers do not need to be manually configured before being added to the cluster. This allows you to easily scale up or down the number of servers in your cluster without the need for setting up each server manually. Changes made to the server template are rolled out to all servers that use that template. Read the complete article here.


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Tuesday Sep 10, 2013

What’s new in Weblogic 12.1.2 by C2B2 Consulting

Oracle recently released Oracle Weblogic Server 12.1.2. Here we look at some of the new features and enhancements.

Support for new Web App protocols Weblogic 12.1.2 supports HTML 5 and Web Sockets along with new support for JSON-REST services with two types of input and output formats: XML and JSON.

Better Oracle Database 12c support Weblogic 12.1.2 now fully supports Oracle Database 12c including support for the new database's advanced features such as application continuity and multi-tenancy. Application continuity allows an application to continue running even when the database is down. Multi-tenancy allows your applications to choose which specific tenant databases they can connect to.

Enhanced support for Maven Updated plug-ins, POMs and archetypes make it easier to build WebLogic, Coherence, TopLink, and Fusion Middleware applications with Maven-based repositories and build systems.

Dynamic Scaling Weblogic 12.1.2 adds a dynamic clustering capability whereby new managed servers can be spun up and added to an existing cluster to react to increased load or performance issues. It includes a set of diagnostic tools that watch memory and processor usage, which the administrator can monitor to see if the cluster needs to change in size. With the continued popularity of cloud-based infrastructure-as-a-service, this sort of elastic scalability is a natural progression for Oracle.

JMS Another new feature which goes hand in hand with dynamic scaling is the ability to target JMS servers and file stores to an entire cluster, rather than a single managed server instance. This capability promises to simplify the HA configuration of JMS, since the old method of making JMS highly available was to use Weblogic’s service migration features. Administration for JMS has been streamlined and the new JMS can speed data rates on Oracle Exalogic by up to three times (according to Oracle).

New developer tools Read the full article here


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