Remote session

Hi there. This one is about connections between servers. Imagine the following situation: In a remote node (calvin), a query is being executed, e,g,: select * from database@hobbes:table_name In local node (hobbes), its possible to find out the details of the remote (say client) session, by means of onstat -x, then onstat -u , sysmaster tables and so on. I repeat: in local node Now suppose I log in to node calvin: How can I know the process ID / thread address / whatever, of that session accessing node hobbes? (according to the information i got, as explained above) Any idea? Our installation has dozens of such annoyng automated processes, and indeed, they ARE really annoyng. We need to track them for performance considerations. Any help is really appreciated Thanx in advance for your kindness