Patent · US Active

Database backup system using data and user-defined routines replicators for maintaining a copy of database on a secondary server

US7330859B2 · kind B2 · utility

23Cited by

8References

8Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Ajay Gupta · Savanuru, IN
Karl Ostner · St. Wolfgang, DE

Key dates

Filing date	Sep 10, 2003
Grant date	Feb 12, 2008
Priority date	—
Expiry date	Jul 11, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S707/99955
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

In a database system having a primary server side (10) and a secondary server side (30), a high availability data replicator (26, 46) transfers log entries from the primary side (10) to the secondary side (30) and replays the transferred log entries to synchronize the secondary side (30) with the primary side (10). R-tree index transfer threads (54, 56) copy user-defined routines, the user defined index, and index databases deployed on the primary server side (10) to the secondary server side (30) and deploy the copied user-defined routines, reconstruct the user-defined index, and copy data pages on the secondary side (30) to make the user-defined index consistent and usable on the secondary side (30).

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