Method, apparatus and computer program product for transaction resolution in a system comprising a transaction manager, a plurality of resource managers and a connection distributor for distributing transaction requests from the transaction manager amongst the plurality of resource managers. The transaction manager is allocated a first resource manager via which to conduct its transactions and the first resource manager has a transaction resolution queue associated with it. The system also comprises an asynchronous messaging infrastructure able to transmit messages originating at the transaction manager to the transaction resolution queue. The resource managers may comprise part of the asynchronous messaging infrastructure. Responsive to a failure between the transaction manager and the first resource manager, state data is received from the transaction manager at a second resource manager, the state data being addressed to the transaction resolution queue. The state data is delivered to the transaction resolution queue using the asynchronous messaging infrastructure.