Oracle-Scattered Read, Sequential Read, and Direct Path Read
2013-01-24 14:24
344 查看
db
file
sequential
read(single block read into one SGA buffer)
db
file
scattered
read(multiblock read into many discontinuous SGA buffers)
direct
read(single or multiblock read into the PGA, bypassing the SGA)
![](http://img.my.csdn.net/uploads/201301/24/1359009004_7849.gif)
相关文章推荐
- 【转自Oracle ACE-盖国强】Oracle 11g全表扫描以Direct Path Read方式执行
- oracle等待事件-direct path read/write
- oracle 11g direct path read new feature
- Oracle 11g新特性direct path read引发的系统停运故障诊断处理
- Oracle 11g全表扫描以Direct Path Read方式执行
- Oracle 11g direct path read 等待事件的理解
- oracle非空闲的等待事件-direct path read
- Oracle 11g全表扫描以Direct Path Read方式执行
- 10.3.4 direct path read and direct path read temp
- oracle等待事件2构造一个DB File Sequential Read等待事件和构造一个Direct Path Read
- Oracle 11g全表扫描以Direct Path Read方式执行
- Oracle 11g全表扫描以Direct Path Read方式执行
- Oracle 数据库禁止全表访问的时候direct path read
- Oracle 11g新特性direct path read引发的系统停运故障诊断处理2
- Oracle direct path read 事件解释
- Oracle Metric direct path read
- 100.In which situations does the Oracle Data Pump use external tables and not the direct path load w
- oracle wait event: Direct Path Read Temp
- Oracle 11g direct path read 等待事件的理解
- Oracle 11g全表扫描以Direct Path Read方式执行