Configuring the SAP Gateway


As with all SAP programs, the SAP Gateway can be influenced by parameters. For example, you can use parameters to set the maximum number of CPI-C connections or gateway work processes.

The installation of a SAP Gateway for TCP/IP connections within an Instance of an R/3 System is standard. Using service G (see SAP Server), you can install a gateway which supports SNA or DCAM.

The SAP Gateway reads the parameters from the SAP profile file like another server (profile directory in the R/3 Directory Tree).

Process flow

You can specify four different types of parameter value. Evaluation corresponds to the following hierarchy of priorities:

These are only available for certain parameters, for example instance number.

Each instance has a specific profile. The instance profile is used to set the parameter values of an instance process.

The file name of an instance profile follows the convention
<SAP System><instance>, for example CUAG45.

The values in the default profile DEFAULT.PFL apply to the entire SAP system. All the instances in an SAP system access the default profile. However, if the parameter has already been set in the command line or in an instance profile, a parameter setting in the default profile will not take effect.

There are pre-set values (defaults) for most parameters. Unless you specify a preferred value, each of these parameters accepts the default system value. Default values can only be pre-set by SAP.

Changes to parameter values only take effect when you restart the processes concerned.

Profile Parameters

The profile parameters detailed below are standard for the SAP Gateway on OS/2, UNIX and WindowsNT platforms. Default values are assigned to these parameters.

In an R/3 System you can display all parameters with values by executing the program RSPFPAR or by starting the Gateway Monitor via Tools ® Administration, Monitor ® System monitoring ® Gateway Monitor (Transaction SMGW), GoTo ® Parameters.

You can maintain profile parameter values via Configuration ® Profile Maintenance (Transaction RZ10) in the Computing Center Management System (CCMS).

To display parameter properties and descriptions, use Transaction RZ11.

You can change the pre-set parameter values (default values) by editing the profile parameter files.