Client/Server Technology 

Purpose

The task of the client/server technology components is to provide a reusable runtime environment for other components that use the client server technology as the basis on which to process requests. The focus is on optimizing operating system resources (CPU, memory, etc.), in terms of performance, scalability, and robustness.

In addition to the components in the SAP kernel there are programs that regulate data traffic in the network, such as the SAProuter and the SAP Web Dispatcher, as well as smaller monitoring and test programs.

The SAP client/server architecture is developed on the SAP Web Application Server.

Integration

For information on the architecture of the SAP Web Application Server see Architecture of the SAP Web AS.

Features

Components

The table below lists the components of the SAP kernel that are part of the client/server technology, and for which there is detailed documentation. Some of these functions exist only in SAP Web AS ABAP, others are also used for SAP Web AS Java.

CST Documentation on Subcomponents

Component	Documentation
BC-CST-IC Internet Communication Manager	Internet Communication Manager (ICM) Administration of the Internet Communication Manager SAP Web Dispatcher
BC-CST-EQ Enqueue	The SAP Lock Concept Cross System Lock
BC-CST-UP Update	Updates in the SAP System
BC-CST-MM Memory Management	SAP Memory Management
BC-CST-MS  Message Service	Monitoring and Testing the SAP Message Server
BC-CST-LL Low Level functions	Trace Functions
BC-CST-NU Number range buffer	SAP Number Range Buffer
BC-CST-GW Gateway/CPIC	SAP Gateway
BC-CST-NI Network Interface, SAProuter	SAProuter
BC-CST-SL SAP License	SAP License

Transactions

The following transactions are also involved in monitoring components and executing basic functions.

Monitoring and Administration Transactions

Transaction	Transaction Code	Documentation
SAP Server	SM51	Overview of the SAP Application Server
Process Overview	SM50	Display and Control Work Processes
User List	SM04	Display and Manage User Sessions
System Messages	SM02	Processing SAP System Messages
ICM Monitor	SMICM	Using the ICM Monitor
Gateway Monitor	SMGW	Using the SAP Gateway Monitor in the SAP System
Message Server Monitor	SMMS	Message Server Monitor
Server resources	SARFC	Configuration of System Resources for Parallel RFC, tRFC,qRFC

Tools for Configuring and Testing SAP Systems

The following additional programs are available for you:

·        sapcpe. With this program you can organize your directory tree locally in UNIX. For more information see Setting Up Local Executables on UNIX SAP Instances.

·        lgtst, msprot and msmon are programs for Monitoring and Administration of the SAP Message Server.

·        gwmon is used for monitoring the SAP Gateway.

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