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 (more...)

Environment Variable Tip when using OHS 12.1.2 by Simon Haslam

OHS in co-located WebLogic configurationHere's a silly little issue I hit this afternoon - mostly a case of "administrator error" but a time waster nevertheless.
To recap, there was a big change to Web Tier administration in 12.1.2 in that OHS is controlled with what's now called the "WebLogic Management Framework" - in short this means OHS instance configuration is handled via WLST and lifecycle (start/stop etc) by Node Manager (i.e. OPMN has gone). You have (more...)

Elastic PaaS with WebLogic and OpenStack, part I By Jernej Kaše

In my previous blog I described the steps to get OpenStack on Solaris up and running. Now we'll explore how WebLogic and OpenStack can work together to deliver truly elastic Middleware Platform as a Service.
Middleware / Platform as a Service goals
First, let's define what PaaS should be : PaaS offerings facilitate the deployment of applications without the complexity of managing the underlying hardware and software and provisioning hosting capabilities.
To break it down:

Getting the most out of WLDF Part 3: Notifications by C2B2

his blog directly follows on from part 2 on watches, so if you haven’t already read that then you should probably go and do that now. You can still create notifications without having any watches configured; you just won’t receive anything on them. In the last post, I had created two watches, one Server Log watch and one Collected Metrics watch. In this post, I will create notifications to work with these watches.

What are (more...)

ADF Performance Monitor: Measuring Slow Network Time

Recently I was implementing the ADF Performance Monitor at a customer site and doing a detailed performance analysis. This customer had severe (and less severe) performance problems but was unable to pinpoint the exact pain points. Frequently, end-users were complaining because they were experiencing first a very good performance (response times less than a second), and then suddenly experiencing a drop in performance for a certain period of time (an hour or so) with response times between five to twenty seconds.

In (more...)

Advanced WebLogic Server Automation: Administration and Monitoring with WLST and JMX – New Book by Martin Heinzl

All production environments need automated, auditable, and reproducible processes. This book discusses how to automate all aspects of WebLogic, an essential prerequisite for all production environments. The WebLogic Server platform is recognized as one of the leading J2EE application servers and is the foundation of the Fusion Middleware platform. It is well suited for a variety of different application architectures including modern grid and cloud infrastructures. A large number of WebLogic installations from a single (more...)

Oracle SOA Suite 12c tips – Tuning the SOA infrastructure thread pool

One of the new capabilities of Oracle SOA Suite 12c is the ability to control the SOA infrastructure thread pools, except the resource pools for EDN and the adapters, with Oracle WebLogic Server work managers. Each partition will has its own work managers defined. This allows you to separate services in partitions and, to some extent, tune them separately based on for example specific SLA requirements.

Well, this blog posting is not about explaining the (more...)

Create a 12c development server from the SOA 12c Quickstart

So at the time of writing there is only the “Quickstart” 12C SOA and BPM. That’s all fun and games, it installs straight out of the box.

However,  I want a real development environment, and run it on my dev server.

So, first thing first.

  1. Download the SOA Suite and BPM 12c.
  2. Then install the SOA Suite quick installer.
  3. Install BPM 12c in the same ORACLE_HOME as the SOA Suite.
  4. Make sure you have a (more...)

WebLogic 12cR3 articles

WebLogic 12cR3 was released towards the end of last week, so this weekend I had an install-fest.

I also did some minor amendments to some existing articles.

Retrieving WebLogic Server Name and Port in ADF Application

It could come handy to know how to get WebLogic server name and port in ADF application. Particularly this could be useful, when running ADF application in the cluster and there is a requirement to track WebLogic node with application session instance running. Usually it is not enough to get server host, as cluster node is accessed through load balancer and server IP is different, not the one visible in HTTP session.

There is a (more...)

MDS Seeded Customization Approach with Empty External Project

Great feature in ADF - MDS Seeded customisations support. This is particularly useful for independent software vendors, who are developing their own products on top of ADF framework. With MDS Seeded customisation, maintenance for multiple customers becomes easier. We could create customisation, instead of changing original source code - this makes it easier to maintain a product. I would like to share one important hint, related to technical architecture for MDS Seeded customisations - this (more...)

How To Setup MDS Repository for Embedded WLS Instance

Recently I was enabling external MDS repository for ADF MDS Seeded Customizations, I was facing issues while testing such MDS repository with my local embedded WLS instance - running it directly from JDeveloper. I managed to find a solution at the end, so I would like to share it with you.

I was doing same thing as to configure MDS support for ADF Query Saved Search - defining persistence config in add-config.xml file. This (more...)

The WebLogic Server and Trust Stores

I will describe how you configure trust stores for the WebLogic Server.


Chain of trust

When a SSL server certificate is issued by a CA it is signed by a another certificate. Normally this will be an intermediate certificated, that is again signed by the CAs root certificate. So there is a chain of trust between the (more...)

Configure Coherence HotCache

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

WLST script for listing WebLogic Server memory usage

Here is a short script for listing Java heap usage for all WebLogic Servers in a domain.


servers = domainRuntimeService.getServerRuntimes();
print('# Java heap information per server')
print('%20s %10s %8s %8s %4s' % ('Server','Current','Free','Max','Free'))
for server in servers:
   free    = int(server.getJVMRuntime().getHeapFreeCurrent())/(1024*1024)
   freePct = int(server.getJVMRuntime().getHeapFreePercent())
   current = int(server.getJVMRuntime().getHeapSizeCurrent())/(1024*1024)
   max     = int(server.getJVMRuntime().getHeapSizeMax())/(1024*1024)
   print('%20s %7d MB %5d MB %5d MB %3d%%' % (server.getName(),current,free,max,freePct))


Execute (more...)

The Oracle SOA Suite and the OSB are now free for developers!

I did not notice it myself but over Christmas Oracle made the SOA Suite and the OSB free for developers.

I found out via the January issue of the Oracle SOA Partner Community Newsletter, issued by
Jürgen Kress. You can sign-up for the newsletter here:

You can download most Oracle FMW software for free on the OTN download site. Although you do not have to pay to download the software, it is (more...)

Upgrading EM12c to Active Directory Authentication Quirks

We recently upgraded our EM12c installation to This service was configured to authenticate logins against our Active Directory server via LDAP. However, after upgrading we found that authentication stopped working, even after recreating the Active Directory Authenticator (as required). I could see the list of users from AD, but could not authenticate them in EM!

In this post I'm going to share what we did to diagnose (more...)

REST, SSE or WebSockets on WebLogic 10.3.6

WebLogic 10.3.6 comes with Jersey1.9 and has no support for Server Side Events or WebSockets. But for one of our projects we are making a HTML5 / AngularJS application, which need to invoke some RESTful services and we also want to use of SSE or WebSockets. Off course we can use WebLogic 12.1.2 but we already have an OSB / SOA Suite WebLogic 10.3.6 environment. So when you want to pimp your

Evènement : Workshop Enterprise Manager 12c

UKOUG Tech13 WebLogic Hackathon

Yesterday we conducted the SuperSunday WebLogic Hackathon at the UKOUG Tech13 conference.

It went well and people looked like they had a pleasant time.

I have enjoyed preparing for the event. The team contained a Brit, a Dutch, a Swiss and a Dane. It has been very motivating meeting people (more...)