ORA-00911錯誤，哪裡錯了，看了SQL文,该怎么处理

ORA-00911錯誤，哪裡錯了，看了SQL文
DECLARE
TYPE ename_table_type IS TABLE OF emp.ename%type
INDEX BY BINARY_INTEGER;
TYPE sal_table_type IS TABLE OF emp.sal%type
INDEX BY BINARY_INTEGER;
ename_table ename_table_type;
sal_table sal_table_type;
sql_stat VARCHAR2(100);
BEGIN
  sql_stat:='UPDATE emp SET sal=:percent WHERE deptno=:dno RETURNING ename,sal INTO :name,:salary;';
  EXECUTE IMMEDIATE sql_stat USING &percent1,&dno RETURNING BULK COLLECT INTO ename_table,sal_table;
  FOR i IN 1..ename_table.COUNT LOOP
  dbms_output.put_line('雇员'||ename_table(i)||'的新工资为'||sal_table(i));
  END LOOP;
  END;

------解决方案--------------------
execute immdediate那一句里面有全角空格吧,把空格回车删了重新输入。

SQL code

DECLARETYPE ename_table_type IS TABLE OF emp.ename%typeINDEX BY BINARY_INTEGER;TYPE sal_table_type IS TABLE OF emp.sal%typeINDEX BY BINARY_INTEGER;ename_table ename_table_type;sal_table sal_table_type;sql_stat VARCHAR2(100);BEGIN  sql_stat:='UPDATE emp SET sal=:percent WHERE deptno=:dno RETURNING ename,sal INTO :name,:salary';  EXECUTE IMMEDIATE sql_stat USING &percent1,&dno RETURNING BULK COLLECT INTO ename_table,sal_table;  FOR i IN 1..ename_table.COUNT LOOP  dbms_output.put_line('雇员'||ename_table(i)||'的新工资为'||sal_table(i));  END LOOP;END;