Hi Jan!
Thank you for the quick answer.
I have asked for 2 solutions... you gave me 3... you deserve the outstanding rating 
I was able to use the 2 first solutions but not the 3rd:
1) graphical view, via DBACOCKPIT : here I see "Truncate log on checkpoint = NO", which means:
- Archive log mod ON for oracle speakers
- "Full" database mode for SqlServer Speakers.
Correct ?
2.a) Via isql + sp_helpdb, I do not see "Truncate log on checkpoint" : in other words, this parameter is set to false. Correct ?
2.b) Using "master..sysdatabases", here is what I see. I do not really know how to interpret that "status" colum, probably because of the type of it ?
Feel free to add some details on 2.b) solution when you wish. Anyway I will mark your first answer as the [very] good one (I am afraid that doing it right now will close the thread).
Thanks again, kind regards, jean