[Xymon] how to run 2 xymon-servers on 1 host?

I would like to run 2 xymon-4.3.0 servers on 1 host (one for testing, one for production), each with its own user (xymon vs xymontst) and port (1984 vs. 1985). The problem is, that I get an error-message when starting the second server:

"Could not get shm of size 262144: Permission denied"

This is one of the more obscure parts of the SysV IPC specs, but it basically boils down to this: Make sure the two Xymon servers have different XYMONHOME directories, and it should work OK.

(For details, look up the documentation on your systems' "ftok" function).

Regards, Henrik