当前位置导航:炫浪网>>网络学院>>编程开发>>Oracle教程

PGA_AGGREGATE_TARGET参数的变更

    从Oracle9i开始,Oracle引入了自动PGA管理的新特型,PGA_AGGREGATE_TARGET参数用于控制PGA的总体期望目标:


$ sqlplus "/ as sysdba"
SQL*Plus: Release 9.2.0.4.0 - Production on Thu Apr 6 16:40:13 2006
Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.

Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64bit Production
With the Partitioning option
JServer Release 9.2.0.4.0 - Production
SQL> show parameter pga
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
pga_aggregate_target                 big integer 1073741824
SQL>

    但是在Oracle9i中,PGA_AGGREGATE_TARGET参数仅对专用服务器模式下(Dedicated Server)的专属连接有效,对共享服务器(Shared Server)连接无效;从Oracle10g开始PGA_AGGREGATE_TARGET对专用服务器连接和共享服务器连接同时生效。

原文地址:http://www.eygle.com/archives/2006/04/pga_aggregate_target_changed.html

相关内容
赞助商链接