oracle体系结构小结_第1张图片



Database server = Instance + Datafile

Instance = SGA + Backround Process + PGA

SGA = Share Pool + Database Buffer Cache + Redo Log Buffer + Java Pool + Large Pool

Share Pool

Database Buffer Cache

Redo Log Buffer

Java Pool

Large Pool

Backround Process = PMON + SMON + DBWR + LGWR + CKPT + ORTHERS

PMON

SMON

DBWR

LGWR

CKPT

OTHER

PGA = User Process + Server Process

User Process

Server Process

Datafile = Parameter File + Password File + Data File + Control File + Redo Log File + Archived log File

Parameter File

Password File

Data File

Control File

Redo Log File

Redo Log File