#include <db.h> DB_MPOOLFILE * DB->get_mpf(DB *db);
         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.