Oracle Workshop for Weblogic 10gR3: “requested array is larger than heap”

little note to myself

During development for the osb pop-ups from eclipse keep coming by : “requested array is larger than heap”
Fix for me :
http://forums.oracle.com/forums/thread.jspa?threadID=847409&tstart=0

goto :

<BEA_HOME>\osb30\user_projects\workspaces\<YOUR_WORKSPACE>\.metadata\.plugins\org.eclipse.wst.server.core\publish\

and delete the publish*.dat

change startup settings of eclipse
see help from workshop ide itself, topic “Allocating enough memory and solving OutOfMemoryErrors”
eclipse -vmargs -Xmx

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The Forrester Wave: Enterprise Service Buses, Q1 2009

Last month The Forrester released their evaluation of some of the vendors of enterprise services buses for Q1 of 2009.
It gives a good overview of the core and extended functions of the daily ESBs and the strengths and weaknesses of the vendors (for both the licensed and open source esbs).

Go read it!

GlassFish, The Google Trends

The Aquarium posted some lately stats about the usage of the Glassfish application server.
Nice to see it’s coming close at some points to the JBoss application server (i think the one which is his closest competitor).
At the 10th of february a nice heap when Sun announces his “Sun GlassFish Portfolio”.

If we take the stats of some other big competitors in the charts we’ll notice a few differences.
When we take oracle as and ibm websphere together with glassfish and jboss i guess the last 2 still got a long way to go, but they are growing!

comparing all 4
trend1
trend2
trend3

comparing glassfish and jboss
trend4
trend5
trend6

At this moment IBM and Oracle are still the big players on this market, let’s see what GlassFish will do in the near future it’s getting more popularity lately.

Jersey 1.0.2 got released

New version of the reference implementation of JAX-RS 1.0 API got released (sorry for the delayed announce…was busy lately).
Jersey is also integrated in glassfish so will be available in the update center (v2 and v3 when some dependency problems got fixed).

Resources
info
download
quick start
Paul Sandoz blog

Oracle BPEL Fault Policy Framework handling custom business faults

From the Oracle forum and from the comments on my article about Oracle BPEL Fault Policy Management i get a lot of questions about how to let the framework handle my own custom defined ‘business faults’.
In certain situations the default set of faults defined by Oracle aren’t suited enough and you need to define your own faults.
If we look into the examples which got supplied by Oracle we can see an example over here. In this example they defined their own NegativeCredit-fault.

The Oracle BPEL Fault Policy Framework by default only handles the faults which are getting returned on an invoke-activity.
So we have our own custom fault and the knowledge we can only let this fault getting catched by the framework by use of an invoke.
So we need atleast for this testscenario 2 bpel processes. One mainprocess which calls a subprocess, and this subprocess will throw the custom business fault.
This fault will get propogated back to the mainprocess and in here we will be able to let the framework handle the fault.

bpel-invoke

BPEL Processes

Mainprocess

mainprocess

Subprocess
subprocess

Just a simple invoke of the subprocess from the mainprocess. The subprocess with throw a fault, and this fault will be catched in the mainprocess.
throwThe fault to be thrown

From the console start the mainprocess and wait till it comes back with a fault messageinvoke-faultedClick the activity to see the thrown fault

[2009/02/13 16:24:41]
"{http://nl.iteye/integration/faults/business}BusinessFault" has been thrown. 

<BusinessFault xmlns="http://nl.iteye/integration/faults/business">
<part name="payload">
    <BusinessFault xmlns="http://nl.iteye/integration/faults/business">
      <FaultCode>999</FaultCode>
      <FaultMessage>Something went wrong!</FaultMessage>
    </BusinessFault>
  </part>
</BusinessFault>

Ok nice!
So the custom fault we defined in the subprocess reaches the mainprocess.
Now we need to config the fault policy framework so it will get active on our custom business fault.
From the fault we pasted above we need the faultname (BusinessFault) and the namespace (http://nl.iteye/integration/faults/business).

Edit /bpel/domains/default/config/fault-policies/DefaultPolicy.xml and add the next fault :

   <faultName xmlns:flt="http://nl.iteye/integration/faults/business" name="flt:BusinessFault">
            <condition>
                    <action ref="ora-human-intervention"/>
            </condition>
   </faultName>

For testing we will just let this fault getting handled by human-intervention.
Now restart the components

opmnctl stopall
opmnctl startall

Now start the mainprocess again and wait till it fails.

invoke-faulted-frameworkIt looks like the framework got active (activity yellow marked) on our custom business fault.
invoke-faulted-audit

Go to the activities-tab

list-activities
And click the activity which faulted.

edit-activity
Now we can edit some of the values and let the subprocess get re-invoked.

So, at this moment we’re able to throw our custom business faults and let them getting catched by the framework. Since the fault is only getting catched on the invoke of a partnerlink, we aren’t able to let our custom business fault getting throwned to the process in which we maybe want do something with the data for which we actually throwed the custom business fault. So maybe we want to stay in the subprocess and somehow get the custome business fault thrown inhere, let the framework catch it and update the values of this subprocess with new values an re-execute the subprocess.

The next solution will get this done.
The mainprocess won’t get changed but in the subprocess we will invoke a new process called AllBusinessFaults.

New subprocess 2
subprocess2

AllBusinessFaults
all-business-faults

The AllBusinessFaults will throw the custom business fault we ‘request’ back on the invoke in this subprocess. Now it wil get catched by the framework and we will be able to change the values of the subprocess instead of the mainprocess.

list-activities2

By using the AllBusinessFaults bpel service like a sort of composite service, we can add the custom business faults in it and throw the one we would like to get thrown. This will work if the collection of custom business faults isn’t that big. I’m sure there will be better solutions for this, but for the scenario i wanted to describe inhere it was good enough for me.

Question
In the examples i provided i don’t use the fault-part of a synchronous invoke to propegate the soap-fault back to the caller, i just throw the fault. The bpel engine itself throws the fault back to the first-level. Whats best practice on this one ?

Sources
BPEL Sources (First part of article with mainprocess/subprocess)
BPEL Sources (Second part of article with mainprocess/subprocess/allbusinessfaults)

Resources
Oracle BPEL 10.1.3.3 Fault Policy Management

Mule IDE 2.0 RC1

I’m currently working on a proof of concept for testing the mule esb for a local goverment.
It’s a nice case to become familiar with a new esb since i mostly did my development on the Oracle ESB/ALSB.
Good too see some differences in concepts/techniques and connectivity and what the open source world has to offer for service busses.
Though the mule-source.org gives me some nice documentation/examples, i was still missing a good ide for development (though most can be done with some simple editor), i still like auto-complete in xml etc.

I already noticed Mule-IDE, but this version wasnt really actively updated, till i noticed a new update on this blog today. Though you can get most work done by running some mule maven archetype and eclipse for the editting of the xml/java, i’m still curious if the ide gives some extra functionality.

Information
Download
Screencast

Will check it out to see if it’s usefull for my mule development.

New blog!

Welcome to my new blog.

Overhere i will try to post once in a while some articles about my knowledge and experience during daily work.

If you would like to see some information on subjects please tell me and i will try to update in the blog.

Enjoy!