Tentative update and confirm or compensate

US7720992B2 · kind B2 · utility

Assignee

• SAP AG · DE

Inventors

• Rainer Brendle · Trochtelfingen, DE
• Peter Eberlein · Malsch, DE
• Guenter Zachmann · Wiesloch, DE

Key dates

• Filing date: Feb 2, 2005
• Grant date: May 18, 2010
• Expiry date: Jan 22, 2028

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F11/1474
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Methods and apparatus, including computer program products, for communications in a distributed software system. An operation request from a remote computer is received, and provisionally executes an operation identified by the operation request. A first message is generated. The first message contains a transaction identifier identifying the operation request, an unsuccessful indicator flag, and a temporary data store. The temporary data store identifies tentatively written data generated by the operation. The first message is stored in a message store. If the successful completion of the operation is detected, a second message is generated. The second message contains the transaction identifier as well as a successful indicator flag. The second message is stored in the message store, and the message is transmitted to the remote computer. If the failure of the operation is detected, the message stored in the message store is transmitted to the remote computer.