Friday Mar 14, 2014

WebLogic section: Configure Coherence HotCache by Edwin Biemond

Coherence can really accelerate and improve your application because it's fast, high available, easy to setup and it's scalable. But when you even use it together with the JCache framework of Java 8 or the new Coherence Adapter in Oracle SOA Suite and OSB 12c it will even be more easier to use Coherence as your main HA Cache.

Before Coherence 12.1.2 when you want to use Coherence together with JPA for the database connectivity, you must make sure that there is no batch job or application doing modifications directly in the database. This will lead to an out of sync Coherence Cache. But with Coherence 12.1.2 together with GoldenGate you can capture these database changes and send updates to the Coherence Cache. This is called Coherence HotCache. Here you can see how it basically works. Read the complete article here.

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Wednesday Feb 05, 2014

Coherence 12c (12.1.2) Proficiency

Coherence is am in-Memory Data Grid solution that provides predictable scalability for mission-critical applications, continuous data availability, and transactional integrity.

All videos and more can be found on the Coherence YouTube Playlist At our WebLogic Community Workspace ( WebLogic Community membership required).you can find the latest ppt presentations tagged with Coherence.


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Monday Jan 06, 2014

Coherence 12c hands-on Bootcamp at Fusion Middleware Partner Community Forum February 18th-21st 2014

As part of the Fusion Middleware Partner Community Forum 2014 we offer hands-on Coherence 12c Bootcamp The conference is ONLY for Oracle Partners, for details please visit our registration page!maciej

Trainer: Maciej Gruszka, Senior Principal Product Manager at Oracle
Agenda Highlights

  • Basic knowledge in Java and JavaEE
  • Understanding the Application Server concept
  • Basic knowledge in older releases of WebLogic Server

Technical Requirements:

  • Laptop 6 GB RAM
  • Pentium 4 CPU with minimal 1.6 GHz (better Dual-Core)
  • Minimum 15 GB free disk space

Take this opportunity and register now for the Oracle Fusion Middleware Partner Community Forum that will be held in the Hilton Malta on February 18th and 19th 2014 with hands-on training on February 20th & 21st 2014- Like last year we expect that the conference is booked out – register asap!

  • SOA Suite 12c & Cloud integration
  • BPM Suite 12c & Adaptive Case Management 12c
  • Internet of Things & mobile strategy & fast data
  • WebLogic 12c the foundation of Oracle Fusion Middleware.

WebLogic Partner Community

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Monday Dec 23, 2013

Coherence*Web: Sharing an httpSession Among Applications in Different Oracle WebLogic Clusters by Jordi Villena

An easy approach to extending Coherence*Web to enable session sharing.
Downloads download-icon13-1 Oracle Coherence & download-icon13-1 Oracle WebLogic.

Standard Configuration

Coherence*Web permits a full session offload so Oracle WebLogic instances can be focused on processing Oracle WebLogic requests; however, in some cases, http sessions are large, and there is a trade-off between the benefits of offloading the whole user session, and reducing the network usage by offloading only the object that needs to be shared among the different web applications. Coherence*Web and Oracle Coherence itself are built with low-latency, non-blocking I/O as a prime function, but it still takes time and bandwidth to transmit when working with large volumes of data. In such situations, it would be useful to be able to select which session attributes must be stored in the local storage of the Oracle WebLogic instances, and which should be leveraged to an Oracle Coherence distributed cache.

The storage configuration in Coherence*Web can be configured in a wide variety of ways. To balance between offloading Oracle WebLogic instances and mitigating the performance lost by storing the whole http session in an Oracle Coherence dedicated node, a subset of session attributes can be stored in the Oracle Coherence external cache via the use of a custom session distribution controller.

Another reason to offload some session attributes from Oracle WebLogic is to share this set of attributes with web applications deployed in different Oracle WebLogic clusters. A session distribution controller allows us to add logic to deduce whether a session attribute must be stored in the distributed cache.

The following sample shows a session distribution controller that stores session attributes whose name begins with "shared_" in the distributed Coherence Layer, as well as any other attribute in the local storage of the Oracle WebLogic managed instance that handles the user request: Read the complete article here.

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Friday Dec 20, 2013

Coherence Community on Java.net by Bob Rhubart

Brian Oliver (Senior Principal Solutions Architect, Oracle Coherence) and Randy Stafford (Architect At-Large, Oracle Coherence Product Development) discuss the evolution of the Oracle Coherence Community on Java.net and how developers can actively participate in product development through Coherence Community open projects.

Watch the interview on YouTube.

Visit the Coherence Community at: here.

WebLogic Partner Community

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Tuesday Nov 19, 2013

Harness the Power of Oracle WebLogic and Oracle Coherence Join our online virtual event on December 3rd

Java Developers and Architects can attend live, moderated sessions and hands-on labs to learn how to leverage existing skills to take advantage of features in Oracle WebLogic and Oracle Coherence, core components of Oracle's Cloud Application Foundation. For details please visit our registration page.

WebLogic Partner Community

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Tuesday Nov 12, 2013

New Coherence 12c White Paper: The Advantages of Coherence on Exalogic

This white paper provides you with an overview of both Oracle Coherence and Oracle Exalogic Elastic Cloud, and how businesses can realize even greater benefits from these technologies when they are used in tandem. Get the white paper here.

WebLogic Partner Community

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Thursday Sep 26, 2013

Planning a Successful Coherence Deployment

Hot off the press! A new white paper on planning a successful Coherence deployment is now available here.

This is a complete update of the previous white paper on this subject. It covers a range things you should consider, how the new features in 12c can be used, tips and tricks and practical advice about everything from application design to capacity planning. Whether you are an administrator looking to monitor and manage a Coherence application, a developer or architect just starting out with Coherence or an experienced Coherence user,  this guide should prove a useful companion to the existing Coherence help and documentation.

WebLogic Partner Community

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Tuesday Jul 16, 2013

Coherence YouTube videos by Frank Munz

Frank Munz released three new videos on Youtube:

· Oracle Coherence Basics and Multicast Test, Firewalls - YouTube

· Oracle Coherence Command Line, Replication and Availability - YouTube

· Oracle Coherence NetBeans API and NamedCache - YouTube

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Thursday Jul 11, 2013

Coherence 12.1.2.0.0 available for download

Coherence 12.1.2.0.0 is available for download at the Oracle Software Delivery Cloud! Let us know your first impression & and the new features you like  twitter/wlscommunity #WebLogicCommunity

Additional information:

image

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Tuesday Jun 25, 2013

Oracle Coherence-Free Hands On Technical Workshop –July 11th 2013 London

Oracle Coherence-Free Hands On Technical Workshop

   WHEN

                      WHERE

             HOW TO REGISTER

Thursday
11th of July 2013
9:30am- 4pm

Oracle Corporation UK Ltd.
One South Place, London
EC2M 2RB

Fill in the form at the bottom
of this page

For details and registration please visit the C2B2 website

logo C2B2

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Thursday Jun 20, 2013

Oracle Coherence with WebLogic 12c by Frank Munz

Already collecting material for the next edition of my book I had a closer look at Oracle Coherence which is part of the WebLogic Suite. I made a number of hands-on screencasts available, more blog postings with best practices will follow. Make sure to subscribe to WebLogic book YouTube channel: http://www.youtube.com/weblogicbook.

Basic Introduction:

Coherence is a coherent data grid that provides a number of different cache implementations, which are well described here. The following figure illustrates how data A. B, C is stored into different nodes with the same put(key, value) method.

coh_cache impl

Oracle Coherence Basics, Multicast Test and Firewall Issues Read the full article here.

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Tuesday May 21, 2013

Coherence Incubator & Community Source Code & Release Documentation

Oracle Coherence is the industry's leading in-memory data grid solution, enabling organizations to predictably scale mission-critical applications by providing fast and reliable access to frequently used data. As a shared infrastructure, Oracle Coherence enables real-time data analysis, in-memory grid computations, and parallel transaction and event processing, and is a key component of Oracle cloud application foundation.

New version of the Coherence Incubator (version 11.0.0) is now available

Additional new Coherence material includes:

WebLogic Partner Community

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Wednesday Mar 06, 2013

Coherence and WebLogic by René van Wijk

In this post, we configure WebLogic and an in-memory data grid, such as Coherence and present scripts to start and stop the environment. We start with creating a Coherence Server (which will be our storage enabled node in the cluster). You can find the steps required to create a Coherence Server here.René van Wijk

When the server is created, click on the created server and subsequently on the server start, configuration tab, in order to set the class path and some JVM parameters.

Enter the following properties:

  • Java Home: Specify the location of the JDK installation directory such that /bin/java exists, in our example we will use /home/weblogic/jrockit-jdk1.6.0_29-R28.2.2-4.1.0
  • Java Vendor: Oracle
  • Class Path: /home/weblogic/weblogic12.1.1/installation/coherence_3.7/lib/coherence.jar:
    /home/weblogic/weblogic12.1.1/installation/modules/features/weblogic.server
    .modules.coherence.server_12.1.1.0.jar:
    /home/weblogic/weblogic12.1.1/configuration/applications/base_domain/security/test.jar
  • Arguments: -jrockit -Xms256m -Xmx256m -XXkeepAreaRatio:25 -Xgc:pausetime -XpauseTarget:200m
    -XX:+UseCallProfiling -XX:+UseLargePagesForHeap -Dtangosol.coherence.mode=prod
    -Dtangosol.coherence.cacheconfig=security-cache-config.xml -Dtangosol.coherence.management=all
    -Dtangosol.coherence.management.remote=true

Above, we have specified the class path to included coherence.jar and \weblogic.server.modules.coherence.server_12.1.1.0.jar, which are needed to make Coherence available. The test.jar contains our Coherence configuration and serializable classes. These are presented in the post. JBoss RichFaces, Facelets and Coherence on WebLogic.
Note: The JVM parameters also included Coherence system settings, such as, -Dtangosol.coherence.mode=prod and -Dtangosol.coherence.cacheconfig=security-cache-config.xml. With the first one, we tell Coherence to run with production settings. The second one defines the cache configuration file to use. Unfortunately, the configuration provided in a Coherence override is not picked up. Read the full article here.

WebLogic 12c technical information: Java Message Service & Java Extensions & best practice upgrade

  • 3 Things You May Not Know about Java Message Service on Oracle WebLogic Server - Watch the replay now.
  • Java Management Extensions with Oracle WebLogic Server 12c - Watch Now
    Benefits, Strategies, and Best Practices for upgrading to Oracle WebLogic Server - Watch Now

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