Application Server with up to 15 Users (iSeries)
The values listed in the following table for the host system and server should ensure the best possible operation of your SAP Web Application Server for up to 15 dialog users.
The lower limit values represent a type of minimum configuration for small SAP System installations.
Main and Unprotected Storage on the Host System
Resource |
SAP Recommendation |
Free auxiliary storage |
Minimum: The greater of the following two values:
Recommendation: 4-6 GB |
Main storage |
Minimum: 256 MB (memory pool without database). More main storage provides performance advantages.Recommendation: at least 512 MB This value is recommended for hosts on which only one instance is running. If you are planning to install the database system or a second instance on a host, please contact your Hardware Competence Center or system consultant. |
Profile Parameters
For information about the use of the various parameters, see
Profile Parameters for Memory Management.Parameter |
Recommended Value |
| abap/heaplimit: Work Process Restart |
20000000 (20 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 |
2000000000 (2 GB) |
| abap/heap_area_total: Heap Memory Limit |
2000000000 (2 GB) |
| em/initial_size_MB: Extended Memory Pool Size |
128 (128 MB, 6 MB per user)Minimum 64 MB |
| em/stat_log_size_MB: Statistics - User Context Size |
20 |
| em/stat_log_timeout: Statistics - User Context Size |
600 |
| rdisp/ROLL_MAXFS: Maximum Roll File Size |
0 |
| rdisp/ROLL_SHM: Roll Buffer Size |
0 |
| rdisp/PG_MAXFS: Maximum Size of the R/3 Paging File |
16384 (The same value as rdisp/PG_SHM) |
| rdisp/PG_SHM: Paging Buffer Size |
16384 |
| ztta/roll_area: Roll Area |
Set automatically |
| ztta/roll_first: Initial Allocation Size from the Roll Area |
Set automatically |
| ztta/roll_extension: Extended Memory Limit |
40000000 (40 mil. bytes). |
The settings listed here are recommended base values that you may, however, have to change if you monitor or optimize your SAP System. For more information, see
Monitoring the Memory Management System.
Check the changes to the system profiles using the program rspfpar. For more information, see
Operating System and Hardware Prerequisites.