DISTRIBUTED TRANSACTION PROCESSING SYSTEM IMPLEMENTING CONCURRENCY CONTROL WITHIN THE OBJECT REQUEST BROKER AND LOCKING ALL SERVER OBJECTS INVOLVED IN A TRANSACTION AT ITS START

A computer system and method for performing concurrency control on work requests, the system having an object request broker for receiving work requests and for dispatching them for execution within the computer system, a processor for processing the requests which have been received by the object request broker, and a concurrency control component in the object request broker for performing concurrency control by isolating the effects of a group of related work requests which form a transaction. The method includes the steps of receiving a work request, analyzing the requested object and method related to the work request, and locking the brokering of the method.