Gary A Green

US Patent:

6347322, Feb 12, 2002

Filed:

Nov 9, 1998

Appl. No.:

09/188465

Inventors:

Robert L. Bogantz - Columbus OH
Gary Michael Green - Lancaster OH
Sidney Dean Hester - Pickerington OH

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G06F 1200

US Classification:

707202, 707201, 707 10

Abstract:

A transaction processing system comprises a querying system and a logical database having an active database and a backup database. The querying system transmits a message for a transaction to the logical database for processing. The message is transmitted to the active database where the message is processed. The active database creates transaction state data based, in part, on the message. The active database transmits a response message to the querying system and forwards the original message to the backup database. The backup database processes the original message and creates its own transaction state data. The transaction state data in the backup database operationally matches the transaction state data in the active database so that if the active database fails, the backup database includes the requisite transaction state data necessary to complete the transaction. The querying system processes the response message and transmits a termination message to the logical database for processing. The termination message is transmitted to the active database and processed.