There is no limit on the database side. It's a limit imposed by the editor.
Well, specifically, they limit how high you can set the limit, but they don't actually put a limit on how many elements can be stored in the array, so if you have 5000 items, it will go ahead and display all of them.
You can use this: http://rmrk.net/index.php?topic=45210.0
Remember to CLOSE your project and then OPEN it again after it's finished because it's rewriting your rvdata2 files.
Better back-up your data as well since it doesn't do it for you. Some people have lost months worth of projects as a result.