SAP work process Memory allocate
1. The original configuration of the system se38/rsmemory
2. Memory allocation of a SAP BW On HANA system
#-
# Values proposed by SAP for shared memory pool sizes
#-
Ztta/roll_extension = 8000000000
Ipc/shm_psize_10 = 456000000
Ipc/shm_psize_40 = 1900000000
Abap/heap_area_dia = 8000000000
Abap/heap_area_nondia = 8000000000
Abap/heap_area_total = 16000000000
#-
# Others Values
#-
Zcsa/system_language = 1
Zcsa/installed_languages = 1EM
Zcsa/second_language = E
Is/SMTP/virt_host_1 = *: 250 $
Icm/host_name_full = sapprd2.ccp.com.cn
Gw/acl_mode = 0
3 、 Memory allocation sequence to work processes
Https://blogs.sap.com/2012/12/01/memory-allocation-sequence-to-work-processes/
Summary: ztta/roll_first--- > Extended memory--- > roll area--- > local heap memory--- > WP goto PRIV mode
