Patent · US Active

Method and system to avoid deadlocks during a log recovery

US9619506B2 · kind B2 · utility

1Cited by

3References

20Claims

0Family size

Assignee

SAP SE · DE

Inventors

Andre Schefe · Berlin, DE
Bernd Vorsprach · Berlin, DE
Henrik Hempelmann · Havelberg, DE
Martin Brunzema · Berlin, DE
Robin Wissbrock · Berlin, DE
Torsten Strahl · Kleinmachnow, DE

Key dates

Filing date	Nov 25, 2014
Grant date	Apr 11, 2017
Priority date	—
Expiry date	May 1, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG06F2201/80
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method, medium, and system to receive a request to perform a log recovery to restore multiple database services; determine log backup entries corresponding to a target log position for a first database service of the multiple database services; read from a sequential stream device, by the first database service, the log backup entries corresponding to the target log position for the first database service; inform a second database service of the multiple database services that the first database service has concluded executing the log backup entries corresponding to the target log position for the first database service from the sequential stream device; assuring that no resources of the streaming device are blocked by the first database service; and read log backup entries of the second database service corresponding to a target log position for the second database service from the sequential stream device.

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