eval { 
                $sth = $dbh->prepare($sql);
                $sth->execute($hwa,$ip,time());
        };
        if ($@) { 
                sleep 1; 
                $dbh->disconnect; 
                db_connect(); 
                $sth = $dbh->prepare($sql); 
                $sth->execute($hwa,$ip,time()); 
        }