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	Byte
abap/heap_area_nondia	2000000000 (0 on 64 bit)	Byte
abap/heap_area_total	2000000000 (PM 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	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_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 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.