Patent US 5,864,679

A multiple processor transaction processing system having both a transaction routing unit for routing each transaction generated by the transaction source to one of the transaction processors, and a data arrangement unit for determining data arrangement of the data to be used in processing the transactions by the transaction processors. The transaction routing unit routes each transaction to one of the transaction processors according to the feature parameters extracted from each transaction and the processing history information for past transactions processed by the transaction processors. The data arrangement unit determines a new data arrangement of the data in the data storage regions according to a data storage information indicating original arrangement of the data in the data storage regions and the correlation information indicating all sets of data which are accessed together in each series processing carried out by the transaction processors.