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During connection establishment, the operating system must keep requests in a queue. This parameter specifies the maximum number of requests that can have this status at any one time. If the network queue is full, the system rejects any additional connection requests without notifying the sender.


Work area

Internet Communication Manager, SAP Web Dispatcher


Integer value

Standard value


Dynamically changeable

Local and on all servers

Value Range and Syntax

You can set the parameter to values between 5 and 1024.


This parameter is handled differently by different operating systems. For 4.2BSD, the maximum value was 5. Current systems support higher values. If the operating system's maximum value is exceeded, the operating system reduces the parameter value to the maximum supported value. See also the description of operating system call listen(), Parameter backlog.