Use
You can use the message server monitor to closely monitor the functioning of the message server.
The initial screen is identical to the SAP Application Server Overview (SM51). All SAP servers that have logged on to the message server are displayed.
Prerequisites
You are logged onto the SAP system, and the message server is running.
Features
The menu option Goto contains all of the functions of the message server monitor.
Display Details
To view detailed information about the client on which the cursor is positioned, choose Goto ® Display details.
Information about the Release
To view detailed information about the release of the message server, choose Goto ® Release Notes.
The release notes provide information on the version of the SAP Message Server, and on the release and Support Package level of the SAP kernel.
kernel information tells you the release of the SAP kernel. Besides kernel release and compile information, this screen provides the following information:
· Update level specifies with which kernel releases the kernel can run in an SAP System. If different application servers are to run with different kernel patch levels in one system, they must all have the same update level.
· PPPatch number specifies the last Support Package level that is relevant for the component message server.
· Source ID indicates the actual kernel patch level (the number after the full stop).
See below for the patch comments on the kernel patches that apply to the component message server, and other detailed information.
Hardware Key
You can display the hardware key of your SAP system, which you need to install the SAP license, by choosing Goto ® Hardware Keys. (For further information about the SAP license procedure, see the documentation on the SAP License.)
Parameters
You can view all the parameters associated with the Message server by choosing Goto ® Parameters ® Display. Some of these parameters can be changed dynamically while the system is running; to do this, choose Goto ® Parameter ® Change.
You can display the RZ11 documentation for every parameter. To do this, place your cursor on the parameter name and choose 
Documentation.
The most important parameters are described in Message Server Parameters.
Statistics
You can activate, display, deactivate, or reset Message server statistics. To do this, choose Goto ® Statistics.
The statistics include information on, among other things, the number of logins, requests received, bytes written and read.
If you deactivate the statistics function and later reactivate it, the existing values are used as a base and new statistics are added to them. If you want to start the statistics from scratch, you have to use the Reset function.
Trace
You can access the following functions of the message server trace by choosing Goto ® Trace:
· Display trace file (dev_ms)
· Reset trace file
· Increase or decrease trace level
If the message server is restarted, the trace file dev_ms is re-named to dev_ms.old before it is re-written. In this way, both the current and the old versions of the trace file are available.
You can use the trace logging function to locate sporadic and awkward errors. This is described in detail in the documentation: Trace Logging.
Services
To display the open ports on the message server choose Goto ® Services. On these ports you can access the message server, if you want to Monitor the Message Server from the Browser.
The list contains the following information about the services.
Message Server Services
Column | Meaning |
Protocol | Internet protocol; HTTP and HTTPS. |
Service/Port Number | Number of the port or service, on which the message server receives incoming HTTP or HTTPS connections. The number must be between 1 and 65535. |
Host name | Host name on which the port is connected. If the host name field is empty, the port is connected to all network adapters of the host. |
Ext. connected | If the checkbox “Use external binding program“ is activated when you define the service, an “X” appears in this column. The external binding program icmbnd (or icmbnd.exe in Windows) enables ports with numbers under 1024 also to be bound under UNIX, without running the SAP kernel (which starts the ICM) or the message server with superuser authorization. |
Virt Host Index | Number of the virtual host index. If an HTTP request arrives on this port, only those application servers that have this host defined in them are taken into account. Virtual hosts are defined in the profile parameter is/HTTP/virt_host_ For more information see Configuring SAP Web Dispatcher / Message Server for Virtual Hosts. |
You can configure standard services (ports), which you want the message server to open for HTTP(S) requests. You can display details of services, add new services, and change or delete existing services. These settings are made in profile parameter ms/server_port_
The dynamic settings are lost when the message server is restarted. If you want to make your settings permanent, you have to make them in the profile too.
Logon Data
You can display the logon data for the individual SAP application servers that are currently logged on to the message server. To do so, select a server and choose Goto ® Logon data ® Display.
The number of dialog work processes (in the dialog mode) that the message server needs for load distribution is displayed under Additional data.
The relevant dispatcher sends this data to the message server when the server is started.
Logon type | Host name | Port | Host address | Additional data |
Dialog | ls0302.wdf.sap-ag.de | 3253 | 10.17.68.123 | DIA=12 |
RFC | ls0302.wdf.sap-ag.de | 3353 | 10.17.68.123 |
|
HTTP | ls0302.wdf.sap-ag.de | 8080 | 10.17.68.123 |
|
HTTP with SSL | ls0302.wdf.sap-ag.de | 8443 | 10.17.68.123 |
|
SMTP | ls0302.wdf.sap-ag.de | 25053 | 10.17.68.123 |
|
In this example, the application server (SAP Web Application Server) is making 5 protocols available on the machine ls0302.wdf.sap‑ag.de. The message server gets the details of these request types from the application server.
It is not usually necessary to change the logon data. If the message server does not get the data fro whatever reason, you can enter it manually. To do this, choose Goto ® Logon data ® Change.
See also HTTP Load Balancing on the SAP Message Server
Expert Functions
These functions are required for analysis performed by SAP, and are not described further here.
Exceptions to this are the server functions Shut Down Server (Hard), Shut Down Server (Soft,) Terminate connection, Deactivate and Activate. These functions control the state of the application server. These states are described under SAP Application Server States.
The server functions are described in detail under Server Functions.
The load balancing functions for HTTP requests are described in HTTP Functions.
The host name buffer stops the message server from having to eliminate a host name for each request. You can display the buffer, write it to the trace file dev_ms, or reset it.
See also:
Overview of SAP application servers
Activities
Enter transaction code SMMS.
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