BPEL and transactions - part 3

About controlling transactions in the Oracle SOA Suite MEDIATOR component. Here is part 3 of "BPEL and transactions".

Control of transactions in Mediator

When the mediator component of Oracle SOA Suite is called from an external process, a new transaction will be created. If a parent transaction exists and mediator can use this, it will do so.

With sequential (syncronous) routing rules, all rules will be executed in one transaction. In case of error there will be a rollback of all routings. The fault policies of the mediator are NOT being executed.

In case of parallel routing rules, a new transaction is created for every new rule. In case of error a rollback will be executed. Here, the fault policies of the mediator are executed and can be used to react to errors.

First, sequential routing rules are executed in one transaction. After that every parallel rule is executed in its own transaction.