Kurzer Auszug aus der Hilfe ...
If there are multiple copies of the database located on various Domino servers, using the database replica ID in place of both the server and database name lets you access a replica copy of that database without having to specify either the server name or the database name. For example, if you use "85255CEB:0032AC04" (a database replica ID, found in the database InfoBox) as the database name, Lotus Domino uses a replica of the database to retrieve the information.
Das heißt doch soviel, als das der Servername angegeben werden muss, oder ?
also der Befehl dann so heißen müsste:
@DbLookup("":"NoCache";"" : "C12575D3:004DF201";"Uebersetzung";tmp2+tmp1;2)