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Cost/benefit based checkpointing while maintaining a logical standby database
Cost/benefit based checkpointing while maintaining a logical standby database
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机译:在维护逻辑备用数据库的同时,基于成本/收益的检查点
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摘要
A method, system, and computer program product for generating checkpoint information in a database management system that determines the frequency of checkpointing of transactions based on a cost/benefit tradeoff analysis. A method for generating checkpointing information in a database management system comprises the steps of generating redo information based on transactions processed by the database management system, determining a cost of recovery using the redo information, determining a cost of taking a checkpoint, receiving a user specification of acceptable recovery delay and acceptable checkpoint overhead, and taking a checkpoint when cost effective to do so based on the cost of recovery using the redo information, the cost of taking the checkpoint and the user-specified acceptable delay and overhead.
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