Cluster database with remote data mirroring

Details Cluster database with remote data mirroring Cluster database with remote data mirroring

2005-02-22

2005-02-22

Mizrahi, Diane D. (Department: 2175)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000

Reexamination Certificate

active

06859811

ABSTRACT:
A method and apparatus for mirroring data between a plurality of sites is provided. A replication relationship is established between the plurality of sites that include a first site and a second site. A first database server at the first site receives an indication that a write operation could not be successfully mirrored at the second site. In response to the indication, the first database server initiates a membership voting operation by communicating with a quorum device to determine whether the first database server or a second database server associated with the second site should be removed from the replication membership. If it is determined that the second database server associated with the second site should be removed from the replication membership, then the first database server sends a message to indicate that write operations are no longer to be replicated at the second site.

REFERENCES:
patent: 6144999 (2000-11-01), Khalidi et al.
patent: 6163856 (2000-12-01), Dion et al.
patent: 6757790 (2004-06-01), Chalmer et al.
patent: 20030079019 (2003-04-01), Lolayekar et al.
patent: 20030187861 (2003-10-01), Lubbers et al.

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