The correct configuration for the memory management system in a large SAP NetWeaver Application Server depends on several factors. We cannot, therefore, give any recommendations for standard configuration. However, you can calculate your own approximate values by referring to the information in this section and in the other sections that are referred to.
To determine the required resources for the host system, contact the SAP Competence Center of your hardware partner. Then you can configure the SAP NetWeaver Application Server by setting the memory management parameters in the SAP system profile.
Main and Unprotected Storage on the Host System
Resource |
SAP Recommendation |
Free auxiliary storage |
Minimum: The greater of the following two values: · 6 GB · Three times the main memory In either case, this must be greater than the sum of: · The required unprotected storage (can be estimated using the program rspfpar, see Additional Swap Space Requirements). · The memory requirements of the operating system · To be on the safe side, at least 2 GB of free ASP when executing the operation |
Main storage |
Guidelines: Central system with all services, no database: 180 MB plus 5.7 MB per active user or at least 512 MB With database: Add 150 MB plus 0.3 MB per active user Application server: 120 MB plus 5.3 MB per active user An increase in storage improves performance. Please also contact your hardware partner or the SAP Competence Center of your hardware partner. |
Profile Parameters
For information about how the various parameters are used, see Profile Parameters of Memory Management.
Parameter |
Recommended Value |
40000000 (40 mil. bytes) |
|
abap/heap_area_dia: Heap Memory Limit for Dialog Work Processes |
2000000000 (2 GB) |
abap/heap_area_nondia: Heap Memory Limit for Non-Dialog Work Processes |
See parameter documentation. |
2000000000 (2 GB); see parameter documentation. |
|
5 MB per active user + 1.5 MB per user; Minimum 1024 MB |
|
20 |
|
600 |
|
32768 |
|
32768 |
|
32768 (The same value as rdisp/PG_SHM) |
|
32768 |
|
Set automatically |
|
Set automatically |
|
20000000000 (2 GB) |
The settings listed here are recommended base values that you may, however, have to change when you monitor or optimize your SAP system. For more information, see Monitoring the Memory Management System and Profile Parameters of Memory Management.
Check the changes to the system profiles using the program rspfpar. For more information, see Operating System and Hardware Prerequisites.