Wednesday Feb 25, 2015

Updated Coherence JVisualVM Plugin in Latest Coherence Patch by Tim Middleton

clip_image002We have just released Coherence 12.1.3.0.1, (Patch 18378184) which is the first patch set on top of 12.1.3.  As part of this patch there are a few updates to the Coherence JVisualVM Plugin that improve the range of functionality that we can support, a couple of UI tweaks as well as addressing an issue monitoring Coherence clusters in WebLogic Server environments.

The feature highlights are:

1. Added a tab for displaying information about Elastic Data

2. Added a tab for display JCache Information when using Coherence to store JCache (JSR-107) caches

3. Additional metrics to track partitions stats graphically for a service

4. Displaying extra details for some data via drill down.

Displaying Elastic Data Information

We have added support for displaying a tab when you are using Elastic Data. We support clusters running 3.7.x and above and display information about both the Ram Journal and Flash Journal usage as well as the number of compactions taking place. Read the complete article here.

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For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center.

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Wednesday Jul 23, 2014

Getting Started with Coherence*Web in WebLogic Server 12.1.2 by Tim Middleton

Coherence*Web is a great feature which allows you to store your HTTP sessions in a Coherence Cluster. Doing this allows your to de-couple the HTTP sessions from your JVM’s that are running your web apps, (which can free up JVM memory) and take advantage of the RASP (Reliability, Availability, Scalability and Performance) capabilities of Coherence for storage.

With this separation you can also more easily scale and manage and your HTTP session tier as well as utilise the wide array of session management options that Coherence*Web provides.

What I’d like to show you here is how to configure Coherence*Web in WebLogic Server 12.1.2 and deploy a basic web application that utilises this.

For more detailed information on Coherence*Web and the options available, see http://docs.oracle.com/middleware/1212/coherence/COHCW/start.htm#sthref11.
Setup

For this example, I’m assuming you already have installed WebLogic Server 12.1.2 and created a domain with node manager running.
If you are not familiar with how to do this, then you can use one of my posts here as a starting point or see the product documentation here.

We are going to create two WebLogic Server Clusters and a Coherence cluster into which we shall place both WLS clusters. This will ensure that the manages servers in both WLS clusters are associated with a common set of Coherence caching services. Read the complete article here.

WebLogic Partner Community

For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center.

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