Application Servers with Up to 15 Users (UNIX)
The values listed in the following table for the host systems and server should ensure the best possible operation of your SAP application sever for up to 15 users.
The lower limit values represent a type of minimum configuration for small SAP installations.
Main Memory and Swap Space on the Host System
|
Resource |
SAP Recommendation |
|
Size of swap space |
Minimum: the greater of the 2 following numbers:
Recommendation: 2 -3 GB |
|
Main memory |
Minimum: 256 MB (without a database) You will achieve performance advantages with a larger main memory.Recommendation: min. 512 MB This value is recommended for hosts where only one SAP server runs. If you install the database system or other servers on a host, contact the Hardware Competence Center or your system consultant. |
SAP Profile Parameters
How to use the individual parameters is described in
Profile Parameters of Memory Management.|
Parameter |
Recommended Value |
| abap/heaplimit |
20000000 (20 mil. bytes) |
| abap/heap_area_dia |
200000000 (200 mil. bytes) |
| abap/heap_area_nondia |
|
| abap/heap_area_total: Heap Memory Limit |
1500000000 (1.5 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 |
16384 |
| rdisp/ROLL_SHM: Roll Buffer Size |
2048 |
| rdisp/PG_MAXFS: Maximum Size of the SAP Paging File |
16384 |
| rdisp/PG_SHM: Size of the Paging Buffer |
512 |
| ztta/roll_area: Roll Area |
6500000 (6.5 Mbytes) |
| ztta/roll_first: Size of the Initial Allocation from the Roll Area |
1000000 (1 mil. bytes) If more than 6 MB of extended memory is available per user (em/initial_size_MB), you can set this value to 1 (1 byte). |
| ztta/roll_extension: Limit for Extended Memory |
50000000 (50 mil. bytes), except for background servers under IBM AIX and Siemens-Nixdorf SINIX. You can find more information in the parameter documentation |
The settings listed here are recommended base values that you may, however, have to change if you monitor and optimize your SAP System. For more detailed information, see
Monitoring the Memory Management System.
Check the changes to the system profiles using the program sappfpar. For more information, see
Operating System and Hardware Requirements.