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Background documentationOverview of Parameters for Windows Locate this document in the navigation structure

 

All relevant memory management parameters are set with an optimal default value so that all manual configurations are unnecessary.

The following table gives you an overview of these values.

Profile Parameter

Default Value

Unit

abap/heap_area_dia

2000000000

Byte

abap/heap_area_nondia

0

Byte

abap/heap_area_total

[PM] * 1048576

Byte

em/initial_size_MB

[PM]

Megabyte

em/max_size_MB

[PM] * 1.5

Megabyte

em/address_space_MB

4096

Megabyte

rdisp/ROLL_MAXFS

[BE] * 100

8 KB block

rdisp/ROLL_SHM

[BE] * 100

8 KB block

rdisp/PG_MAXFS

32768

8 KB block

rdisp/PG_SHM

[BE] * 50

8 KB block

ztta/roll_area

6500000

Byte

ztta/roll_extension

2000000000

Byte

where

[MM] = size of the physical main memory

[PM] = value of the profile parameter PHYS_MEMSIZE (default value=[MM])

[BE] = maximum possible number of users (calculated from [PM])

The zero administration memory management on Windows tries to reduce the number of relevant profile parameters so that maintenance and configuration of the application server is simplified, and the available resources are optimally used. For more information, also see SAP note 88416.