The system and method can support accurate load balancing in a transactional middleware machine environment having multiple transactional middleware machines. A service response time table can be maintained on each transactional middleware machine in a transactional middleware machine environment. The service response time table can be adapted by a client on a transactional middleware machine to make a routing decision for a service request. The transactional middleware machine environment can further include a plurality of synchronization servers, each such synchronization server being associated with a transactional middleware machine in the transactional middleware machine environment. The plurality of synchronization servers operate to periodically synchronize service response time tables on each of the transactional middleware machines in the transactional middleware machine environment.
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