Reprocessing missed FIX messages - application side.

Wondering if application has missed processing some FIX messages (e.g. due to exceptions in other code), is it possible to use any quickfixj API point to get a range of messages to be send back to the application from FIX? I.e. the messages are still in the db, they just want to be resend to the callback.

Also how many messages are stored in the messages table, when would this table be truncated (when session resets?).

Thanks.
Parag