SNC Status

You can display information on the SNC connections of the server here.

The table contains the following fields:

Field	Meaning	Profile parameter
Server name		rdisp/myname
SNC active	Green light: yes / no light: no	snc/enable
Appl. PName		snc/enable snc/identity_as
GUI logon	Lock open: insecure connections are accepted Lock closed: insecure connections are not accepted	snc/accept_insecure_gui
RFC logon		snc/accept_insecure_rfc
Internal RFC logon		snc/accept_insecure_r3int_rfc
CPIC logon		snc/accept_insecure_snc
External programs		snc/permit_insecure_start
GSSAPI library	Path to GSS library	snc/gssapi_lib

The profile parameters are explained in the RZ11 of the parameter documentation.

The following documents are also relevant for SNC:

• SNC User's Guide, Technical Document.

SAPNet: http://sapnet.sap.com/systemmanagement -> Security -> Secure Network Communications

• SAP Complementary Software Program

SAPNet: http://www.sap.com/csp

SNC, see: http://www.sap.com/products/compsoft/scenarios/bc/bcsnc.htm

Communication Table

Definition

The communication table contains all of the CPI-C connections for the server on which the cursor was positioned .

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.

Use

The communication table helps you keep track of the CPI-C connections when monitoring the system or analyzing problems.

Structure

Destination	Conv-Id	User	Type	Status	Client	Req	Wp	Time
GTADIR_SERVER	61004034	KUNZ	CLIENT	ALLOCATED	.	.	1	09:16:44
.	60788713	RFC_CORR_REQ	SERVER	ALLOCATED	R/3	CMRCV	0	09:18:22
EU_SCRP_WN32	60230342	KUNZ	CLIENT	ALLOCATED	.	.	1	09:05:18
.	02602553	HINZ	SERVER	ALLOCATED	R/3	.	0	09:51:07
.	88959741	SCHMITT	SERVER	ALLOCATED	R/3	CMSEND(SAP)	1	17:51:27
.	86810585	MAIER	SERVER	ALLOCATED	R/3	CMSEND(SAP)	0	12:41:09

The entries in the table have the following meaning:

Field	Meaning
Destination	Communication partner If the computer where you are currently logged on is the server of a CPI-C connection (see Type column), the destination column will be empty. If the local host is the CPI-C client, the remote destination, which is the server for this connection, is displayed in this field. You can display and maintain RFC destinations using Transaction SM59 or by clicking display and maintain Destination .
Conv-Id	Conversation ID
User	User
Type	Client that requested a service and therefore the connection, or server that fulfills the client’s request
Status	Current connection status; the following entries are possible:
	INITIALIZED	Connection is being made
	ALLOCATED	Connection is made
	DEAL NOW	Connection is being terminated
	DEALLOCATED	Connection has been terminated
	CLEAR SNC	When using SNC: Encrypted data is still being supplied before the connection can be terminated.
Client	If Type = SERVER , information about the client. Is the client also an R/3 System or an external program?
Req	Last call or request (on the CPI-C level)
Wp	Last work process, used for processing
Time	Time of the last request that dealt with the connection

SAP Application Server States

There are the following application server states.

Application Server State	Meaning
initial	The application server has logged on to the message server. When the server is in this state, it cannot be accessed.
starting	The application server starts the work process and initializes all required services. Requests cannot be processed in this phase.
active	This is the "normal" state of the application server. It receives and processes requests, and creates and sends requests to other servers.
passive	In this state, the application server can continue to process received requests or create requests itself. However, no new requests should be sent to the server. The purpose of this state is to "logically" remove from the system a server that has to be stopped during productive operation. The server finishes processing its existing requests, but does not accept any new requests and can be terminated without having to interrupt any relevant requests such as updates or batch jobs. This state can be changed to the "active" state.
shutdown	The application server is in the shutdown phase, that is, it will be terminated. This state is similar to the "passive" state, but cannot be changed to the "active" state. This state or phase ends with the termination of the server.
stop	The application server has terminated the connection to the message server and can no longer be accessed.

For a description of the functions for manipulating the state of an application server,.

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 (R/3 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 (seeBC - 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 information, 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 is active is issued in the status bar. The alternative message is Server 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 ®

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)