System for providing transaction indivisibility in a transaction

Details System for providing transaction indivisibility in a transaction System for providing transaction indivisibility in a transaction

1997-12-23

2000-12-12

An, Meng-Ai T.

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

714 4, 714 11, 710 19, 710 20, 710 52, 710 54, 710 55, 709237, 707202, H02H 305

Patent

active

061611980

ABSTRACT:
A system and method for providing transaction indivisibility in a transaction processing system through the use of commonly-accessible modules for monitoring and maintaining proper source message sequencing is provided. A source message is transmitted from the host processing unit upon recovery of a failure of the host processing unit, where the source message includes information destined for the database, and an identifying sequence number. The identifying sequence number is compared to a stored sequence number, where the stored sequence number is associated with an immediately preceding source message received prior to the failure of the host processing unit. A source message indivisibility failure is indicated where the identifying sequence number is not consecutive with respect to the stored sequence number, while the source message is added to a message execution queue if the identifying sequence number is consecutive with respect to the stored sequence number.

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