I found out which subsystem must be running when starting Debug Manager: the Debug Server (of course!). Thanks to an article by Scott Klement who first led me into the subject.
I must check if it is running a job named QTESDBGHUB under QSYSWRK and, in case, simply start it typing STRTCPSVR SERVER(*DBG) on the command line.
Nevertheless, having done everything right (I suppose) I got immediate connection
on the first of the two iSeries I have to mantain (V5R4):
<01/07/10 9.54> Attempting connection to ‘192.168.100.30’ (192.168.100.30).
<01/07/10 9.54> Connected successfully to ‘192.168.100.30’ (192.168.100.30).
while the second one (V5R2) gets stuck waiting for… boh? I really don’t know:
<01/07/10 9.54> Attempting connection to ‘192.168.101.200’ (192.168.101.200)…..
Does anybody have a clue?