Why getting this error... bind varibale does not exists?

Question

SET SERVEROUTPUT ON
drop table test22;
create table test22(c1 number);
insert into test22 values (1);
insert into test22 values (2);
insert into test22 values (3);
insert into test22 values (4);
commit;
desc test22;
select * from test22;
create or replace procedure test_exec
(c in varchar2)
IS
s1 varchar2(200) := 'select count(*) from test22 ';
v1 number;
begin
DBMS_OUTPUT.put_line('values-->'||s1);
execute immediate s1 INTO v1 using :;
DBMS_OUTPUT.put_line('values-->'||v1);
end;
declare
c number := 3;
begin
test_exec(c);
end;
Procedure created.
ORA-01006: bind variable does not exist
ORA-06512: at "THINSLICE.TEST_EXEC", line 8
ORA-06512: at line 4

Answer 1

> execute immediate s1 INTO v1 using :;
Get rid of the 'using' clause. You can't name a PL/SQL variable ':' anyway (and even if you could, you would still have to declare it first, and even if you'd done that, your dynamic string has no bind variable).