I found the following line in the DAOS - FAQ (http://www-10.lotus.com/ldd/dominowiki.nsf/dx/daos-faq)
Reference counts for objects in DAOS can be seen by issueing the command ‘tell daosmgr daosinfo -d’
Is ‘daosinfo’ a feature from a future version of DAOS? I get a “DAOSMGR: Invalid command line option” on the server console when I type in this command.
@Patrick: Can you sched a light on this, please?
I already asked thisquestion in the wiki, but nobody cares 
Subject: DAOS - Command line options
That function is not in the shipping version of DAOS, I will get the FAQ corrected. This command only exists in a separate tool that our support group could use to diagnose problems
Is there a particular problem that you are attempting to solve ?
P.S. We care, but I don’t know who monitors the wiki for questions (but I will ask )
Subject: No particular problem
I’m preparing a presentation on DAOS for the AdminCamp 2009 in Gelsenkirchen, Germany later this year and I try to cover all aspects of DAOS.And command line options are one topic on my list.
Thank you, Gary for explainig. 