#include <db_cxx.h> int Db::get_h_nelem(u_int32_t *h_nelemp);
         The Db::get_h_nelem() method returns the estimate of the final size
         of the hash table as set by the 
         Db::set_h_nelem()
         method.
    
         The Db::get_h_nelem() method may be called at any time during the
         life of the application.
    
         The Db::get_h_nelem() 
            
            
                method either returns a non-zero error value or throws an
                exception that encapsulates a non-zero error value on
                failure, and returns 0 on success.