Using process pairs as transaction-coordinated resource managers

A computer program product comprising:

• a computer usable medium having computer readable code embodied therein for providing a resource manager for use in a computer system, the computer program product comprising:
• a concurrent aspect including computer readable program code devices configured to cause a computer to provide access to a transaction protected resource during one or more concurrent transactions, the concurrent aspect also including computer readable program code devices configured to cause a computer to construct a transaction record for each respective transaction, each transaction record including each request message received by the concurrent aspect and each response message sent by the concurrent aspect during a particular transaction;
• and
• a serial aspect including computer readable program code devices configured to cause a computer to serially replay the transactions in which the concurrent aspect participates, the serial aspect also including computer readable program code devices configured to cause a computer to rollback a transaction if the replay of that transaction does not match the transaction record constructed by the concurrent aspect for that transaction.