Oracle笔记(9)——checkpoint和CKPT进程

以下摘自Oracle 12c For Dummies

The checkpoint process(CKPT) is responsible for initiating check points. A check point is when the system periodically dumps all the dirty buffers to disk. Most commonly, this occurs when the database receives a shutdown command. It also updates the data file headers and the control files with the check point information so the SMON know where to start recovery in the event of a system crash.

CKPT进程是初始化checkpoint,而checkpoint的作用是让系统可以周期性地把“脏数据”更新到磁盘。

 

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