Whell It is a Micro$oft Windows NT4 machine, no matter how strange it looks.
And I have to Log every user that logs in and out of the informix server, using a specific program. In whitch time that happens, how long it has been there, when it has left.
The real problem is that I know how to make it via program (I can write this program), but I do not whant to write a program that compares two states - current and previous. I wander if there is a way to detect the time that user logs in and logs out, using the sysmaster database.