Patent · US Active

Distributed database log recovery

US9058371B2 · kind B2 · utility

7Cited by

2References

39Claims

0Family size

Assignee

SAP SE · DE

Inventors

Dirk Thomsen · Berlin, DE
Ivan Schreter · Malsch, DE

Key dates

Filing date	Nov 7, 2011
Grant date	Jun 16, 2015
Priority date	—
Expiry date	Nov 23, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG06F2201/84
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Log entries are recorded in a data storage application (such as an in-memory database, etc.) for a plurality of transactions among nodes in a node hierarchy. The node hierarchy comprises master node having a plurality of slave nodes. Thereafter, at least a portion of the master node log entries are replayed until a first replay position is reached. Next, for each slave node, at least a portion of its respective log entries are replayed until the first replay position is reached (or an error occurs). Subsequently, replay of at least a portion of the log entries of the master node that are subsequent to the first replay position is initiated by the master node in parallel to at least a portion of the replaying by the slave nodes. Related apparatus, systems, techniques and articles are also described.

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