On 31 Aug 2011, at 11:33, Sanne Grinovero wrote:

So I didn't have time to try reproducing this issue yet, and likely
won't for a week at least, but is it possible that the batching layer
- which we know is calling into the DummyTransactionManager - is
actually connecting my batch to the real TransactionManager ?

Yes, it should fall back to the real Transaction Manager if one is present. However it should suspend any existing transactions and start a new one, for the batch.