Using Signals to Control the ICM / Web Dispatcher 

Use

You can send operating system signals to the ICM and the SAP Web Dispatcher in order to execute functions. This is useful if you want to administrate the ICM or the Web Dispatcher from a shell script. The functions are provided in the ICM monitor (for the ICM) or the Web admin interface (ICM and Web Dispatcher).

More information:

Using the ICM Monitor

Using the Web Administration Interface

Procedure

The following table lists the signals and their effect on the ICM / Web dispatcher.

Signals and Their Actions

Signal	Action
SIGINT	Downloads
SIGUSR1	Reduces trace level
SIGUSR2	Increases trace level
SIGHUP	Invalidates buffers: host name buffer and server cache The Web dispatcher updates its configuration of active servers, details of groups, and URL prefixes. Either it gets the information from the message server or from a local file. You can do the same from the context menu in the Web Administration Interface. SIGHUP is not supported under Windows.

These signals are valid on UNIX platforms only. Under Windows you can use sapntkill to send signals INT, USR1, USR2 to processes.