TP monitors are especially important in three-tier architectures that employ load balancing because a transaction may be forwarded to any of several servers. In fact, many TP monitors handle all the load balancing operations, forwarding transactions to different servers based on their availability.
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Short for transaction processing monitor, a program that monitors a transaction as it passes from one stage in a process to another. The TP monitor’s purpose is to ensure that the transaction processes completely or, if an error occurs, to take appropriate actions.
