Invention Grant
US07809690B2 Performance metric-based selection of one or more database server instances to perform database recovery 有权
基于性能度量的一个或多个数据库服务器实例的选择来执行数据库恢复

Performance metric-based selection of one or more database server instances to perform database recovery
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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