Patent · US Active

Avoiding recovery log archive access in database accelerator environments

US11182260B1 · kind B1 · utility

4Cited by

14References

18Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Felix Beier · Haigerloch, DE
Knut Stolze · Jena, DE
Reinhold Geiselhart · Liebfrauenhöhe, DE
Luis Eduardo Oliveira Lizardo · Böblingen, DE

Key dates

Filing date	Mar 2, 2021
Grant date	Nov 23, 2021
Priority date	—
Expiry date	Mar 2, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG06F2201/82
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method for maintaining linked databases including a source database and a target database, maintaining first metadata in a recovery log file of the source database, maintaining second metadata that identifies portions of data that are replicated from the source database to the target database as part of the selected partitions of the selected tables, receiving an indication that a crash of the source database has occurred, determining a first recovery metric value for recovering the source database's, determining a second recovery metric value for recovering the source database's data from the target database based on the second metadata, and determining whether to recover the source database's data from the recovery log file of the source database or from the target database based on a comparison of the determined first recovery metric value and the second recovery metric value.

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