Wednesday, 21 January 2015

Understanding Cloud - Difference between On Premises, IaaS, PaaS and SaaS

Hi All,

Understanding Cloud - Difference between On Premises, IaaS, PaaS and SaaS  in a much simpler and funny way.

I recently saw this table and I thought some body has gone a long way to simplifying a lot of the techie talk about cloud and its various forms.


I thought this would be great to share it with you all.




 

Copy Right: No way I take credit for the creation of the below table. The creator of this table owns the copy right. Happy to remove if need be.

Monday, 17 November 2014

BPM Auditing Demystified

Very Informative Blog Written by A-TEAM - Mark Foster. This blog is about Audit Level for BPM and its effect on Audit ability and Performance.


BPM Auditing Demystified

Enjoy the reading.

Recomendation: Which JDK best suites SUN Java or JRockit

I have always come across this dialama, which JDK between SUN Java (Hotspot) and JRockit  to use when we are installing Oracle Integration Products, i.e, SOA BPEL, BPM, BAM etc.

Here are some of my findings and recomendations:

First we will need to understand What is the difference between the Sun JVM and JRockit JVM?
 
The most well know JVM is the implementation from Sun. The Sun JVM is called HotSpot. The Sun JVM is shipped in the Java Developer's Kit (JDK) and Java Runtime Environment (JRE) from Sun.

The JRockit JVM from is optimized for reliability and performance for server side applications. To achieve this, JRockit JVM uses technologies such as code generation, hot spot detection, code optimization, advanced garbage.

To know more about the differences or futures of JRockit refer Oracle JRockit Frequently Asked Questions
 
Also as JRockit has been the propitiatoryJDK for BEA, I would use JRockit in Production or similar environment.

For developer environment I believe we should be OK to use either or. If you plan to debug or examine your code with Java Mission Control or want extended futures from Flight recorder than undoubtedly JRockit is your JDK.

If you have more to add please comment below.

Chaw.

Thursday, 3 July 2014

Setting Persistence or other Transport Headers for MQ Transport in OSB (Oracle Service Bus)

Setting Persistence For MQ Transport in OSB



This blog applies to Oracle Service Bus only.

Have you been trying to make your MQ messages persist on the MQ server. Than you have landed in the right blog. Follow the steps below to set up MQ Transport to persist the MQ messages on the MQ server.

If you were familiar with weblogic JMS messaging, it is very easy to make a JMS message persist on the weblogic JMS server using OSB as the producer. You can do this by checking the Persistence check box in the business service. But it is not the case if you would want to perform the same  for an MQ message on MQ server using OSB MQ transport.

Steps to make your MQ message persist on MQ server using OSB MQ transport:

Assumption: 
a. You are using publish action to publish your MQ messages.
b. The below steps are performed on the OSB console.

1. Open your Proxy or Local Proxy Service
2. Navigate and Edit the Stage where Publish action exist.


3. Navigate to the Request action of Publish
4. Right Click --> Add an Action --> Communication -->  Transport Headers.


5.  Set "SET TRANSPORT HEADERS for" to "Outbound Request" and Click "Add Header"

6. Click drop down for "SOAPAction" and select Persistence.

7. Click Expression and set the value to be set.  

Note: you can repeat steps 5 to 7 to set various other MQ transport headers values. For the entire list of MQ transport headers and their description please visit the blow mentioned Oracle Document:

Document: Oracle® Fusion Middleware Developer's Guide for Oracle Service Bus
11g Release 1 (11.1.1.4.0)

Sunday, 16 June 2013

How to Create XSD and WSDL from Scratch using Jdeveloper.

I wanted to find out if there was already documentation on "How to Create XSD and WSDL from Scratch using Jdeveloper".

And guess what, found one at FUSION Blog : Creating a WSDL File From XSD File

Great Article and the author has illustrated the steps clearly and Thoroughly.

Thanks to the Author.

Happy Coding. :)

Wednesday, 29 May 2013

Oracle ODI - Unable to View Data from Models - Logical Schema not set for current context

Today I stumbled to view data from a ODI Model.

The Problem Statement:

I had created a Model from simple Employee schema with a context name called Development. FYI: I used Oracle Technology.

After performing ODI reverse engineering, I wanted to view the data from one of the tables within the model that I created. You can view the data from the model by 

Right click the Table under the Model --> View Data

On performing the above steps you will get this Error:

"Logical Schema not set for current context"

or

"ODI-17523: There is no connection for this logical schema / context pair: lg1 / GLOBAL."


The Solution:

After doing a bit of reading found that this was a know Design issue.

Document Reference: 
Oracle® Fusion Middleware Release Notes 11g Release 1 (11.1.1) for Linux x86-64
Part Number E14770-44

<Document Snippet>

40.2.1 For File Datastores, the View Data operation always looks for global context

Within ODI Studio, when viewing data from within a data store, there must be a global context defined for the datastore.
com.sunopsis.core.SnpsInexistantSchemaException: ODI-17523: There is no connection for this logical schema / context pair: lg1 / GLOBAL.
As a workaround, define a global context for the datastore.

<Document Snippet>

After reading the above, it clearly makes sense why I was getting the error. The view Data command always referred to the "Global" context which I had not set to any thing.

Please perform the following steps to rectify the problem:

1. Go to the Topology Tab in ODI studio.
2. Select the Logical Schema to which the Model is associated to.
3. Under the Definition tab of the Logical Schema assign the same physical schema, as same as the development context (In my case I used Development Context during Reverse engineering of the Model), to the Global Context.
4. Save all.
5. Now try viewing the data and this will work.


Hope it helped you. Happy Code -ing .... :)

Thursday, 9 May 2013

How To secure your OSB services (Propagate SAML Token)

To day I would like to share my knowledge, Reading and Finding about

How To Secure a OSB service using SAML Token or What are the Steps to Secure a OSB service using a SAML Token (Also the below steps can be used for SAML token Propagation) :

Now in order to find how to secure OSB  there is a sites / videos that can help us:



  • Watch this video for easy understand of how to secure OSB service. This an oracle produced Video. The link provided here is only part 1 out of 3 Parts. As always, youtube provides the links to the relevant videos once you watch the first part. 
  • The same can be found in this slide pack.


Before reading this blog further please view / review the above reference artefacts so that you have the basic Knowledge / context.

In order to achieve our goal there are few bits missing in the above referenced artefacts.

In order to secure a OSB service, you will need two product / parts:

1. OWSM  policies. -- this is clearly articulated in the referenced artefacts above.
2. Configuration of the Weblogic Server (For the identity Provider) - This is missed out in the above reference artefact.

Note: This blog is not to pinpoint any documentation defects in the reference artefacts, please consider this blog as an additional reference material.

In order to configure the security provider or authentication provider in weblogic server, please follow this documentation:


Document: Oracle® Fusion Middleware Securing Oracle WebLogic Server 11g Release 1 (10.3.6)
Section Relevant to us would be: Configuring LDAP Authentication Providers

And one last thing that would vary for us from the reference artefacts is that the following OWSM policies need to be used instead of the policies stated in the above referenced artefacts:


oracle/wss10_saml_token_service_policy – Proxy Service
oracle/wss10_saml_token_client_policy – Business Service.

Hope all the above references were of help. Please feel free to leave you comments.