Parameter
icm/max_conn
Short text
Maximum number of open connections at one time
Parameter Description
Maximum number of (concurrently) open connections of the ICM or SAP Web Dispatcher. The parameter value can be greater than icm/max_threads, since inactive connections do not require a thread in the ICM. The maximum number of sockets that one process can open is restricted by the parameter icm/max_sockets and ultimately by the operating system. This also therefore restricts the value of icm/max_conn.
Each open ICM connection needs a socket. SAP Web Dispatcher needs two sockets for a connection.
To be able to handle overload situations better, the maximum number of connections is increased by the maximum number of threads. With the default configuration of 500 connections and 50 threads, 550 entries are therefore effectively created.
The memory for managing the connections is created in the heap when the program is started. Each connection entry requires approximately 520 bytes. If icm/max_conn = 300, the memory requirement is therefore approximately 160KB.
Application Area
Internet Communication Manager, SAP Web Dispatcher
Default Value
500
Who is permitted to make changes?
Customer
Operating System Restrictions
None
Database System Restrictions
None
Are other parameters affected or dependent?
icm/max_sockets
The maximum number of sockets must be larger than the maximum number of connections.
Values allowed
Integer value, see also SAP Note 737625 and SAP Note 538405.
