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Automatic Memory Management (AMM) SGA and PGA Management in 11g and Above (Doc ID 1392549.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.6 and later
Information in this document applies to any platform.

Purpose

The purpose of this document is to demonstrate how Automatic Memory Management (AMM) manages memory in the SGA and PGA.

Scope

The intended audience of this document is experienced Database Administrators and Oracle Support engineers interested in Automatic Memory Management.

Details

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In this Document
Purpose
Scope
Details
 Mandatory parameters for AMM
 Optional parameters for AMM
 How to control the memory under MEMORY_TARGET?
 Give MMAN complete control
 Take control of memory yourself
 AMM details
 CASE 1: Only MEMORY_TARGET is set
 CASE 2: MEMORY_TARGET, SGA_TARGET and PGA_AGGREGATE_TARGET are set
 CASE 3: MEMORY_TARGET, SGA_MAX_SIZE, SGA_TARGET and PGA_AGGREGATE_TARGET are set
 Summary of case studies
 ORA-4030 and ORA-4031

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