This was tested on Oracle 11.2. PL/SQL loops can have labels, which must appear just before the

*LOOP*statement. They must be undeclared identifiers enclosed by double angle brackets. If you wish, you can repeat the label at the end of the loop:
SQL> DECLARE

2 X NUMBER;

3 Y NUMBER;

4 BEGIN

5 X := 1;

6 <<OUTER_LOOP>>

7 LOOP

8 Y := 1;

9 <<INNER_LOOP>>

10 LOOP

11 DBMS_OUTPUT.PUT_LINE('X = '||X||' and Y = '||Y);

12 Y := Y + 1;

13 EXIT WHEN Y > 2;

14 END LOOP INNER_LOOP;

15 X := X + 1;

16 EXIT WHEN X > 2;

17 END LOOP OUTER_LOOP;

18 END;

19 /

X = 1 and Y = 1

X = 1 and Y = 2

X = 2 and Y = 1

X = 2 and Y = 2

PL/SQL procedure successfully completed.

SQL> DECLARE

2 X NUMBER;

3 Y NUMBER;

4 BEGIN

5 X := 1;

6 <<OUTER_LOOP>>

7 LOOP

8 Y := 1;

9 LOOP

10 DBMS_OUTPUT.PUT_LINE('X = '||X||' and Y = '||Y);

11 Y := Y + 1;

12 EXIT WHEN Y > 2;

13 EXIT OUTER_LOOP WHEN X + Y > 6;

14 END LOOP;

15 X := X + 1;

16 END LOOP;

17 END;

18 /

X = 1 and Y = 1

X = 1 and Y = 2

X = 2 and Y = 1

X = 2 and Y = 2

X = 3 and Y = 1

X = 3 and Y = 2

X = 4 and Y = 1

X = 4 and Y = 2

X = 5 and Y = 1

PL/SQL procedure successfully completed.

SQL>

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