icm/max_sockets

Use

This parameter determines the maximum number of sockets open (at the same time) in the ICM or in the SAP Web dispatcher.

Depending on the connection type one or two sockets are needed for each connection.

The SAP Web Dispatcher always requires 2 sockets for each connection.
The Internet Communication Manager requires one socket for each connection.

Structure

Work area	Internet Communication Manager, SAP Web Dispatcher
Unit	Integer value
Default value	`2048`
Dynamically changeable	No

Value Range and Syntax

Parameters for memory pipes: mpi/total_size_MB [5, 1000], up to 2GB possible, default: 400 and mpi/max_pipes [50, 20500] for all scenarios. Depending on the scenario the maximum value is 70,000.

See Note: 538405 Information published on SAP site and 715400

Integration

Usually the administrator can configure at operating system level the maximum number of sockets a process can have open in parallel. There is no reason to increase the value of this parameter. Refer to the operating system documentation.

You can restrict the number of possible connections in the profile parameter icm/max_conn.

However, if you want to make more than 1024 connections possible with the Web Dispatcher, or more than 2048 connections with the ICM, you can increase this parameter (following the guidelines of the operating system).