SAP System Properties - Important Categories

RDISP/* - Parameters for Dispatcher or processes controlled by the dispatcher (ex: work processes)
ES/* & ZTTA/*- Parameters that control extended memory settings
SCSA/* - Shared Common System Area settings
ENQUE/* - Enqueue work process or standalone enqueue server settings
GW/* - Gateway settings
MS/* - Message server parameters
INSTANCE* - Settings that identify instance or server
ABAP/* - Settings that control ABAP program execution, including heap
AUTH/* - Authorization specific parameters
LOGIN/* - Controls the logon environment (ex multiple sessions)
DBS/<DB Type>/* - Parameters related to database
EM/* - General system related settings
ICF/* & ICM/* - Internet control framework and ICM settings
STAT/* - Statistics collector related parameters


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