Discussion Board for collaboration on QlikView Scripting.
... just to name a few options.
Depending on your query, the database performs a series of steps in order to fetch the output rows. QlikView is just passing the query and then waits for the result.
If it's a production database, there might be other processes that are blocking your query.
So, try to optimize the database performance. If that's not enough, maybe you should use incremental loading.