A transactional memory environment includes a first processor and a processor set. The processor set includes one or more additional processors. In the transactional memory environment, a computer-implemented method includes sending a transaction query from the first processor to all processors in the processor set, and generating an indication by each additional processor in the processor set. The indication includes whether the additional processor is executing a current transaction. The computer-implemented method further includes sending the indication from each additional processor in the processor set to the first processor and proceeding, by the first processor, based on the indication. A corresponding computer program product and computer system are also disclosed.