How to load full MUC history into memory

I’'m using Wildfire 2.5.1 with an embedded database.

As dombiak_gaston wrote in thread http://www.jivesoftware.org/community/thread.jspa?messageID=98111 Wildfire only loads the history of a MUC room of up to 2 days when the server is restarted:

  1. Keep in the server a certain amount of history

The amount of history to keep is regulated by the history policy defined in the Admin >Console. Moreover, when a room is loaded from the database only messages up to 2 >days are loaded into memory.

How can I tell the server to load the full history into memory? The client side solution mentioned in point 2) of the post doesn’'t work for me. It seems that Wildfire only deliveres old Chat messages it already has in memory instead of fetching them from the DB.