文件名称：Db+file+sequential+read
文件大小：1.29MB
文件格式：PDF
更新时间：2021-02-11 09:05:31
数据库 等待事件
数据库 等待事件Db file sequential read的介绍。The db file sequential read Oracle metric event signifies that the user process is reading buffers into the SGA buffer cache and is waiting for a physical I/O call to return. This call differs from a scattered read, because a sequential read is reading data into contiguous memory space. A sequential read is usually a single-block read.