Spring Integration : How to guarantee the transaction two more jdbc-outbound-gateway?

Question

I have the following pattern

I have two kinds of databases. One is a int

Answer 1

Add a QueueChannel somewhere upstream (i.e. before the pub sub channel for tx2) and use a <transactional/> poller to start the transaction.

Alternatively, insert a transactional gateway...

<int:service-activator ... ref="txGw" />

<int:gateway ... service-interface="TX" />

public interface TX {
    @Transactional
    Message<?> exchange(Message<?> m);
}

You'll need <tx:annotation-driven /> to enable transactions in the second case.