获取错误：使用编译错误创建的过程..我做错了什么？

Question

CREATE OR REPLACE PROCEDURE CustomerTotal  
(pl_cname s5.saleinv.cname%TYPE) 
AS
BEGIN
    SELECT SUM(totalprice) FROM s5.saleinv WHERE UPPER(cname) = UPPER(pl_cname);
END CustomerTotal;

当我输入SHOW ERROR时，它会告诉我identifier 's5.saleinv' must be declared。 s5.saleinv是我的表名。