Why the OSB is called stateless?

Hi team,

I often hear this "OSB is stateless and BPEL is dynamic," but never had an explanation for the same support. I went by this blog once again the same are mentioned here, but any theory about it Can I get some information as possible to this?

Thanks in advance,

Malcolm.

Hi seb,

I'll try to give you my explanation in this regard.

The main difference between the two components of Oracle SOA Suite (OSB and SOA Infrastructure service engines) is that SOA Infrastructure, i.e. the BPEL service engine, mediator, business, Human Workflow rules widely uses the underlying database called Infrastructure SOA metadata store. For instance when you call a synchronous service developed in BPEL service engine BPEL and SOA infrastructure c a number of inserts in the base of SOA INFRASTRUCTURE. This process is also known as dehydration. Things get more complicated when we have an asynchronous service - then we have the two dehydration - storing the State of an application in the dehydration store (the store Infrastructure SOA metadata) and restore it later (rehydration) on the back of the State in the memory of the server for execution.

However, the OSB does not such store of dehydration, i.e. OSB acts as a proxy that passes through (with some intermediate processing) to the demands of consumers of services to service producers.

That is why the OSB is stateless (it does not store the intermediate state of executions application OSB) as opposed to SOA that stores the application States in the store of dehydration.

There are some cases where a composite SOA application can be configured as stateless, which will prevent the SOA to store its State in the store of dehydration.

Hope you find my useful and reasonable response!

Kind regards

A.

Tags: Fusion Middleware

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