IUS : locking with datablade Web.

Hello users of IUS and datablade Web, We are working with IUS 9.12 (UC2) and Web datablade 3.30. We have a database on which we do only reading request (only select) and many locks are fixed (we look it with onstat -k). Of course, it's a web application and sometimes request are interrupted. The locks (X) remains in the list and we must restarted the server. OK, we know that with datablade Web the database must be in 'logging' but in our case, it's not appropriate. Has anybody an idea or a solution ? Thanks.