#include <db.h> int DB->get_transactional(DB *db);
            The DB->get_transactional() method returns non-zero if the 
            DB  handle has been opened in a
            transactional mode.
    
         The DB->get_transactional() method may be called at any time during
         the life of the application.
    
         The DB->get_transactional() 
            
                  method returns a non-zero error value on failure and 0 on success.