PLS-00306 Error: Wrong number of types of arguments in call to procedure

[Scorby]

It's possible there is some sort of bug when it has to handle a large number of variables. A workaround might be to assign the PL/SQL variables to the bind variables before calling the package. Also put a dbms_output statement against each bind variable. If it hasn't been declared properly you should get an error here as well.

declare
v_vis_c_fname emps.c_fname%TYPE;
v_vis_c_lname emps.c_lname%TYPE;
...
begin
dbms_output.put_line(:v_vis_c_fname);
v_vis_c_fname := :v_vis_c_fname;
dbms_output.put_line(:v_vis_c_lname);
v_vis_c_lname :=  :v_vis_c_lname;
..
load_names_p.pr_load_names (v_vis_c_fname, v_vis_c_lname, [more variables listed here]...);
end;