SQL> Declare
  2   cursor c1 is select * from emp where comm is null;
  3   TYPE b_int is TABLE OF c1%rowtype INDEX BY binary_integer;
  4   bint b_int;
  5  begin
  6   open c1;
  7     FORALL i IN bint.FIRST..bint.LAST
  8        insert into emp_mod values (bint(i));
  9  end;
 10  /
      insert into emp_mod values (bint(i));
                  *
ERROR at line 8:
ORA-06550: line 8, column 19:
PL/SQL: ORA-00947: not enough values
ORA-06550: line 8, column 7:
PL/SQL: SQL Statement ignored
ORA-06550: line 8, column 7:
PLS-00435: DML statement without BULK In-BIND cannot be used inside FORALL

insert into emp_mod values bint(i)

Fields within collections of records may not be referenced within the DML statement. 
Instead, you can only reference the row in the collection as a whole, 
whether the fields are collections of scalars or collections of more complex objects.

insert into emp_mod values (bint(i));

insert into emp_mod values bint(i);

values(bint(i)) is wrong syntax.

values bint(i) 

  1  Declare
  2   cursor c1 is select * from emp where comm is null;
  3   TYPE b_int is TABLE OF c1%rowtype INDEX BY binary_integer;
  4   bint b_int;
  5  begin
  6   open c1;
  7     FORALL i IN bint.FIRST..bint.LAST
  8        insert into emp_mod values bint(i);
  9* end;
SQL> /
 TYPE b_int is TABLE OF c1%rowtype INDEX BY binary_integer;
       *
ERROR at line 3:
ORA-06550: line 8, column 34:
PL/SQL: ORA-00906: missing left parenthesis
ORA-06550: line 8, column 7:
PL/SQL: SQL Statement ignored

DECLARE
 TYPE b_int IS TABLE OF emp%ROWTYPE INDEX BY BINARY_INTEGER;
 bint b_int;
 BEGIN
  SELECT * 
   BULK COLLECT INTO bint  
  FROM emp where comm is null; 
  FORALL i IN bint.FIRST..bint.LAST
       INSERT INTO emp_mod VALUES bint(i);
  END;

  1  DECLARE
  2  TYPE b_int IS TABLE OF emp%ROWTYPE INDEX BY BINARY_INTEGER;
  3  bint b_int;
  4  BEGIN
  5  SELECT * BULK COLLECT INTO bint
  6  FROM emp where comm is null;
  7  FORALL i IN bint.FIRST..bint.LAST
  8  INSERT INTO emp_mod VALUES bint(i);
  9* END;
SQL> /
TYPE b_int IS TABLE OF emp%ROWTYPE INDEX BY BINARY_INTEGER;
                                                     *
ERROR at line 2:
ORA-06550: line 8, column 28:
PL/SQL: ORA-00906: missing left parenthesis
ORA-06550: line 8, column 1:
PL/SQL: SQL Statement ignored

 1  create or replace procedure test2
 2  as
 3   TYPE b_int IS TABLE OF test%ROWTYPE INDEX BY BINARY_INTEGER;
 4   bint b_int;
 5   BEGIN
 6   SELECT * BULK COLLECT INTO bint
 7   FROM test where col1 is not null;
 8   FORALL i IN bint.FIRST..bint.LAST
 9   INSERT INTO test_bk VALUES bint(i);
10*  END;
QL> /

rocedure created.

QL> exec test2;

L/SQL procedure successfully completed.



QL> select * from test_bk;

     COL1 COL2
--------- --------------------
        1 a
        3 a
        5 a
        6 b
        7 b
        8 c
        9 c
       19 WANGFAN
       22 FF
       24 DD
        1 a

     COL1 COL2
--------- --------------------
        3 a
        5 a
        6 b
        7 b
        8 c
        9 c
       19 WANGFAN
       22 FF
       24 DD

20 rows selected.