When your run-time system or linked executable starts up, it attempts to read the run-time configuration file. The run-time configuration file specifies values for the run-time tunables .
The run-time configuration file is shared by all users of the run-time system.
You create or edit the run-time configuration file with a text editor. It is an optional file - no error is issued if it does not exist. You specify the location and name of the run-time configuration file using the COBCONFIG environment variable. For example, if you want to use a configuration file called , you would set COBCONFIG as follows: