#include <db_cxx.h> DbMpoolFile * Db::get_mpf();
         The Db::get_mpf() method returns the handle for the cache file
         underlying the database.
    
         The Db::get_mpf() method should be used with caution on a replication client site.
	 This method exposes an internal structure that may not be valid after a client site synchronizes with its master site.
    
         The Db::get_mpf() method may be called at any time during the life of
         the application.