Создание курсора. трабла

DECLARE
     distance FLOAT;
     total FLOAT;
     counts INT;
     Cursor cursor_2 (nomer_dr NUMBER)
          IS
          SELECT SUMMA(TRIP_DISTANCE_KM)/COUNT(TRIP_DISTANCE_KM)
               FROM VOLOSUNOV_DEPARTURES, VOLOSUNOV_DRIVERS
               WHERE VOLOSUNOV_DEPARTURES.DRIVER_NUMBER=VOLOSUNOV_DRIVERS.DRIVER_NUMBER AND VOLOSUNOV_DEPARTURES.DRIVER_NUMBER=nomer_dr;
 
BEGIN
     DELETE FROM rez_cur2;
     total:=0;
     counts:=0;
     OPEN cursor_2 (devil);
     loop
          fetch cursor_2 INTO distance;
          exit WHEN cursor_2 %notfound;
          total:=total+distance;
          counts :=counts +1;
     END loop;
 
     сlose cursor_2;
     total:=total/counts;
     INSERT INTO rez_cur2 VALUES (total);
END;

ORA-06550: line 22, COLUMN 13:
PLS-00103: Encountered the symbol "CURSOR_3" WHEN expecting one OF the following:
 
   := . ( @ % ;
The symbol ":=" was substituted FOR "CURSOR_3" TO continue.
 
1. DECLARE
2.      distance FLOAT;
3.      total FLOAT;
4.      counts INT;

ORA-06550: line 23, COLUMN 13:
PLS-00103: Encountered the symbol "CURSOR_2" WHEN expecting one OF the following:
 
   := . ( @ % ;
The symbol ":=" was substituted FOR "CURSOR_2" TO continue.
 
1. DECLARE
2.      distance FLOAT;
3.      total FLOAT;
4.      counts INT;

DECLARE
     distance FLOAT;
     total FLOAT;
     counts INT;
     Cursor cursor_2 (nomer_dr NUMBER)
          IS
          SELECT SUM(TRIP_DISTANCE_KM)/COUNT(TRIP_DISTANCE_KM)
               FROM VOLOSUNOV_DEPARTURES, VOLOSUNOV_DRIVERS
               WHERE VOLOSUNOV_DEPARTURES.DRIVER_NUMBER=VOLOSUNOV_DRIVERS.DRIVER_NUMBER AND VOLOSUNOV_DEPARTURES.DRIVER_NUMBER=nomer_dr;
 
BEGIN
     DELETE FROM rez_cur2;
     total:=0;
     counts:=0;
     OPEN cursor_2 (6);
     loop
          fetch cursor_2 INTO distance;
          exit WHEN cursor_2 %notfound;
          total:=total+distance;
          counts :=counts +1;
     END loop;
 
     сlose cursor_2;
     total:=total/counts;
     INSERT INTO rez_cur2 VALUES (total);
END;

DECLARE
     distance FLOAT;
     total FLOAT;
     counts INT;
     Cursor cursor_2 (nomer_dr NUMBER)
          IS
          SELECT SUM(TRIP_DISTANCE_KM)/COUNT(TRIP_DISTANCE_KM)
               FROM VOLOSUNOV_DEPARTURES, VOLOSUNOV_DRIVERS
               WHERE VOLOSUNOV_DEPARTURES.DRIVER_NUMBER=VOLOSUNOV_DRIVERS.DRIVER_NUMBER AND VOLOSUNOV_DEPARTURES.DRIVER_NUMBER=nomer_dr;
 
BEGIN
     DELETE FROM rez_cur2;
     total:=0;
     counts:=0;
     OPEN cursor_2 (6);
     loop
          fetch cursor_2 INTO distance;
          exit WHEN cursor_2 %notfound;
          total:=total+distance;
          counts :=counts +1;
     END loop;
 
     CLOSE cursor_2;
     total:=total/counts;
     INSERT INTO rez_cur2 VALUES (total);
END;

SELECT dump('сlose')
FROM dual