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Determining Swap Space Requirements (UNIX)Locate this document in the navigation structure

Procedure

Program sappfpar lets you check the minimum and maximum (worst case) swap space requirements for an SAP application server. It also checks the shared memory requirements and if the parameters em/initial_size_MB and abap/heap_area_total are correctly set. Proceed as follows:

  1. To check the instance profile for the SAP application server, start the SAP program sappfpar from the UNIX command line. Enter the following command:

    /usr/sap/<SYSTEM NAME>/SYS/exe/run/sappfpar check pf=/usr/sap/<SYSTEM NAME>/SYS/profile/<Profile name> nr=<System number> name=<Systemname> | more

  2. The program generates a list. Note the total value for the shared memory in field Shared Memory under Memory requirementsestimated. This value corresponds to the size of the shared memory required for this profile, and must be calculated into the shared memory requirements for the new memory management.

  3. At the end of the list, the program specifies the minimum swap space requirements, the maximum heap memory requirements and the swap space requirements in a worst case scenario:

    Total, minimum requirement.....: 169.5 MB (shared memory requirement) Process local heaps, worst case: 762.9 MB (set with abap/heap_area_total) Total, worst case requirements: 962.5 MB

    Ensure that there is more swap space available than what is specified in the worst case scenario. (This is because non-SAP processes also require swap space.)

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