Hello, the Question is: If I open a connection, send a query and close the connection: What do I get? Just a Copy of the Database which will be stored in the core/main memory or a reference to the DB? Here a Code Example: let $cid := client:connect("localhost",port,"user","password") let $query := 'collection("BIG-DB")/*:node' let $req := client:query($cid,$query) let $close := client:close($cid) return $req If it's just a copy in the main memory than (depends on the size oft he DB) it will cost a lot of performance. We have to use such a workaround with "client:connect" because if we try to access directly the DB more than once it will be blocked. So do you have any experience with the return value of "$req" ? Is it still a reference of the DB or is it stored in the main memory? Regards, Sumit Kapoor ------------------------------------------------------- >>> business. people. technology. <<< ------------------------------------------------------- adesso AG mit Sitz in Dortmund Vorstand: Michael Kenfenheuer (Vors.), Christoph Junge, Andreas Prenneis Vorsitzender des Aufsichtsrates: Prof. Dr. Volker Gruhn Amtsgericht Dortmund HRB 20663