Overview of Parameters for Windows

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 [0 on 64 bit]

Byte

abap/heap_area_nondia

2000000000 [0 on 64 bit]

Byte

abap/heap_area_total

2000000000 [0 on 64 bit]

Byte

em/initial_size_MB

[PM]

Megabyte

em/max_size_MB

20000 [100000 on 64 bit]

Megabyte

em/address_space_MB

512 [4096 on 64 bit]

Megabyte

rdisp/ROLL_MAXFS

[BE] * 100

8KB block

rdisp/ROLL_SHM

[BE] * 100

8KB block

rdisp/PG_MAXFS

32768

8KB block

rdisp/PG_SHM

[BE] * 50

8KB block

ztta/roll_first

1

Byte

ztta/roll_area

2000000 [3000000 on 64 bit]

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 under 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.