Only those images that correspond to a consistent snapshot are written to the checkpoint file, and the row shadows allow the currently executing transactions to run unrestricted during checkpointing.

只有那些与一致性快照相符的镜像被写到检查点文件，行影子使当前执行的事务可以在检查点创建期间不受限制地运行。

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Real Time File Mirrorring and CheckPointing and Rollback Recovery (CRR) is used to decrease the loss of fault then improve the availability.

实时文件镜像和检查点与回滚恢复(CRR)是减少故障损失提高可用性的重要技术。

youdao

Real Time File Mirrorring and CheckPointing and Rollback Recovery (CRR) is used to decrease the loss of fault then improve the availability.

实时文件镜像和检查点与回滚恢复(CRR)是减少故障损失提高可用性的重要技术。

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