Patent · US Expired

Parallel replication mechanism for state information produced by serialized processing

US7533132B2 · kind B2 · utility

2Cited by

7References

32Claims

0Family size

Assignee

SAP AG · DE

Inventors

Christian Schaefer · Aspenhausiedlung, DE
Lutz Schmidt · Dresden, DE
Wolfgang Reichert · Holzgerlingen, DE

Key dates

Filing date	Mar 20, 2002
Grant date	May 12, 2009
Priority date	—
Expiry date	Jun 14, 2025

Classification

Technology area (CPC G)Physics
CPC primaryG06F11/3055
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method and system that replicates state information stored in a first data processing system to a second data processing system, whereby the state information is kept in a set of records. An incoming request message requesting a change of the state information is received and an indicator is assigned to the incoming request message representing the order in which the incoming request messages are processed. The sender of the incoming request message is sent a response message after confirmation that the at least one first storage subsystem received a modification record containing the indicator for the incoming request message and modification records of all predecessors of the incoming request message. The at least one first storage subsystem may send an acknowledge message to the first data processing unit confirming receipt of a modification record.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.