Hi everybody
If you can
Colud you explain to me
what does this error mean in SQL*Plus

First I created procedure in PL/SQL Developer

create or replace procedure change_salary(v_emp_id in number,
v_new_salary in number) is
begin
update s_emp set salary = v_new_salary where id = v_emp_id;
commit;
end change_salary;
It gave the message: Compiled successfully


Then in SQL*Plus, I tried the next:

SQL> exec change_salary;

begin change_salary; end;

ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'CHANGE_SALARY'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
SQL>