Memory Management under UNIX
The memory management system is automatically activated and configured using your entries during the installation or the upgrade.
Prerequisites
Before you install or upgrade the SAP system, ensure that the host system(s) on which the SAP application server is set up fulfill all the requirements, particularly regarding main memory and swap space. For more information, see the following section of documentation:
Operating System and Hardware Requirements.Also refer to the installation checklist and the installation documentation OS Dependencies.
Procedure
See the section
Implementing Memory Management (UNIX).There are two different implementations for Linux. For more information, see
Memory Management under Linux.Configuring the Memory Management System
The memory management system is pre-configured in the course of the installation/upgrade procedure. The installation/upgrade program requires information about the host system and sets the memory management parameters for each procedure either to the default values or to the values corresponding to the input. This pre-configuration is valid for the host system on which you perform the installation, and for the server you set up during the installation.
Also see the section
Configuration for UNIX.Checking and Adjusting the Configuration
Check the pre-configured memory management system and your host system using the following sample configuration and guidelines.
Operating System and Hardware Prerequisites
See the section
Operating System and Hardware Prerequisites (UNIX).Requirements for the host:
Checking the Hardware and Operating System of the Host SystemChecking the Operation of the Memory Management System and Setting Parameters
For more information, see the following sections of documentation:
Monitoring the Memory Management System Profile Parameters of Memory Management Monitoring the Memory Management SystemImportant SAP Notes in SAPNet on Memory Management
|
Note Number |
Description |
Operating System |
|
166551 |
Diagnosing memory problems |
All |
|
33576 |
Memory management in releases as of 3.0C, UNIX and NT |
UNIX and Windows NT |
|
127871 |
Inconsistencies in memory consumption display |
All |
|
110172 |
NT: transactions with high memory requirement |
Windows NT |
|
0146528 |
Configuration on hosts with a large amount of RAM |
All |