INFORMIXCMNAME environment variable
If the Connection Manager raises an event alarm, the INFORMIXCMNAME environment variable is used to store the name of the Connection Manager instance that raised the alarm. The environment variable is set automatically by the Connection Manager.
The INFORMIXCMNAME environment variable corresponds to the NAME parameter in the Connection Manager configuration file. The environment variable is used by the CMALARMPROGRAM program to determine the Connection Manager instance responsible for the event alarm. You can also use the environment variable in your own Connection Manager event alarm handler.
The environment variable is set automatically by the Connection Manager and should not be modified.