Overview of SAP Application Servers 

Use

You can display a list of application servers that have registered themselves with the SAP message server by executing Transaction SM51, or by choosing Monitor ® System monitoring ® Servers. Only these application servers are active in an SAP System.

Further, you can also manage, and display the status, of the users and work process in all application servers belonging to the SAP System.

Integration

The function for managing users and work processes corresponds to the user- and process-tools. For more information, see Displaying and Controlling Work Processes and Displaying and Managing User Sessions.

Features

The application server display includes the following information:

·        Server Name: name of the individual application server.

The name usually consists of the host name, the SAP System name, and the SAP System number.

·        Host: host name of the individual server

·        Type: SAP Work Process type(s) for which an application server has been configured

As well as the familiar work process types Dialog, update (Update and Upd2), Enqueue, Batch and Spool, there is also the entry ICM.This means that on the application server in question an Internet Communication Manager (ICM) is configured that can accept or send requests from the Internet (HTTP and other protocols). For more information see Internet Communication Manager (ICM). 

·        Status: The possible statuses of an application server (initial, starting, active, passive, shutdown and stop) are described in Statuses of an SAP Application Server.

You can make changes to statuses in the Message Server Monitor (transaction SMMS). The possible functions are described below:

The following functions are available as pushbuttons or in the menu:

 

You can use your cursor to select an application server by clicking on the relevant line (except for the  Refresh function). The function that is executed then refers to this server.

 

Function	Meaning
Refresh	Refreshes the display
Processes (or double-click)	Displaying and Controlling Work Processes
User	Display and Manage User Sessions
SNC Status	SNC status
Release Notes	Display detailed release information for an application server (SAP kernel, database, operating system)
Remote logon	Log on by any server in the system; you can see the server where you are logged on in the status bar in the second entry from the left.
System log	System Logs
General list functions	Choose detail, filter, sort in ascending and descending order, etc.

There are additional functions that you can only use via the menu:

Goto ® SAP directories

The SAP directories of the server on which the cursor is currently positioned are displayed. The environment variables are displayed on the left and the path to the physical directory on the right. To display the contents of a directory, double-click that directory, or click the Display button.You can also display the individual files here. For more detailed information, see the CCMS documentation.

Goto ® OS Monitor

The OS Monitor provides you with statistics about the host platform, on which an SAP instance is running (for more information, see Operating System Monitor in the CCMS guide).

Goto ® Gateway Monitor

You can also access the Gateway Monitor using transaction SMGW. It is described in Using the Gateway Monitor in the SAP System.

Goto ® ICM Monitor

You can also access the ICM monitor in transaction SMICM. It is described in Monitoring the ICM with the ICM Monitor.

Goto ® Server Information

The following functions are covered:

Function	Meaning
Environment	This displays the environment variables for the selected server.
Communication table	The communication table for the relevant application server is displayed. All the CPI-C connections for the selected server are displayed (see BC - SAP Communication: CPI-C Programming and BC - SAP Communication: Configuration.) The connections are displayed where the local dispatcher of the client is located and those connections where the server is located. This means, the connections to the server that were made externally.
Queue Info	For more informaton, see Queue Info
Release notes	Same information as with the pushbutton Release notes (see above)
WP-CA blocks	Internal information for troubleshooting
APPC-CA blocks
Logon data	Logon data pertaining to the selected server.
Test Connection	Tests the connection to the server on which the cursor is position. If the server is active, the message Server <server name> is active is issued in the status bar. The alternative message is Server <server name> is deactivated.
Trace Search	You can specify a character string in accordance to which all dev_* trace files are searched. This provides an initial overview of the error search.

Host Name Buffer ® Reset ® <Component>

This option lets you make the changes made in the OS hosts and services tables in a running SAP System take effect by making the desired changes at the operating system level and then, instead of restarting, resetting the host name buffer for the following components.(See also SAP Note 25917.)

·        Selected application server

·        Message server

·        Internet Communication Manager (ICM)

·        Entire system (all host name buffers)