Oracle BPM: Hiding Faults from BPM? Don’t use Service Activity! Jan Kettenis

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In the following I explain how you can hide faults from BPM by not using (synchronous) Service activities, but (asynchronous) Send/Receive activities instead.

When calling services from a BPM process, you should think about where you want faults to show up and to be handled. This is specifically of interest when you have some integration layer between your BPM processes and external services that you call to abstract the external services from the BPM process. Let’s call this layer the Service Layer. I have seen such a layer in various formats, ranging from a Reusable Subprocess, a BPEL process in the same composite as the BPM process, or a BPEL process in a separate composite, or instead of BPEL a Mediator. You may have such a layer to hide technical details from the business process, to cover some sort of custom exception handling, or to hide the message format from these external services from the BPM process (or a combination of all that). The latter might be because you don’t have the luxury to do message transformation in a service bus.

In case the BPM process calls the Service Layer through a (synchronous) Service activity and that fails, then this will result in the main BPM instance to get into an errored state, and you will have to handle the error in the BPM process. This behavior might be exactly what you wanted to prevent with the Service Layer, for example because the Service call is in a parallel flow and you want to be sure that the fault does not impact processing of the other, parallel threads. Read the complete article here.

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Technorati Tags: SOA Community,Oracle SOA,Oracle BPM,OPN,Jürgen Kress

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About Jürgen Kress
As a middleware expert Jürgen works at Oracle EMEA Alliances and Channels, responsible for Oracle’s EMEA Fusion Middleware partner business. He is the founder of the Oracle SOA & BPM and the WebLogic Partner Communities and the global Oracle Partner Advisory Councils. With more than 5000 members from all over the world the Middleware Partner Community is the most successful and active community at Oracle. Jürgen manages the community with monthly newsletters, webcasts and conferences. He hosts his annual Fusion Middleware Partner Community Forums and the Fusion Middleware Summer Camps, where more than 200 partners get product updates, roadmap insights and hands-on trainings. Supplemented by many web 2.0 tools like twitter, discussion forums, online communities, blogs and wikis. For the SOA & Cloud Symposium by Thomas Erl, Jürgen is a member of the steering board. He is also a frequent speaker at conferences like the SOA & BPM Integration Days, JAX, UKOUG, OUGN, or OOP.

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