Data processing: database and file management or data structures – File or database maintenance – Database recovery
Reexamination Certificate
2004-07-13
2010-10-05
Breene, John E (Department: 2162)
Data processing: database and file management or data structures
File or database maintenance
Database recovery
C707S675000, C707S678000, C707S679000
Reexamination Certificate
active
07809690
ABSTRACT:
A method and apparatus for selecting one or more instances to perform database recovery is provided. According to one aspect, one or more performance metrics are determined for each instance on each node in a cluster. Based on these performance metrics, which may be weighted to give one or more metrics more significance relative to the other metrics, an overall score is determined for each instance on each surviving node when a node in the cluster fails. One or more instances with the highest of these scores are selected. The selected instances are assigned the task of performing the database recovery process. Because instances best able to handle to database recovery process are selected, the database recovery process consumes less time, thereby making data accessible in less time after a node fails.
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Chan Wilson
Colrain Carol
Pommerenk Stefan
Pruscino Angelo
Breene John E
Hickman Palermo & Truong & Becker LLP
Le Thu-Nguyet
Nicholes Christian A.
Oracle International Corporation
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