如何在Oracle 18c中通过用户定义的过程访问HR模式对象？

Question

我已经给出了尝试创建过程为[[user1时得到的代码和错误消息。我尝试在Oracle XE 18c的示例hr模式中访问employee表。我可以知道如何通过用户定义的过程访问hr模式对象吗

CREATE OR REPLACE PROCEDURE proc_1 IS
v_name hr.employees.first_name%TYPE;
v_num NUMBER;
BEGIN
SELECT first_name INTO v_name FROM hr.employees
WHERE employee_id=100;
v_num:=5;
DBMS_OUTPUT.PUT_LINE('test'||v_name);
DBMS_OUTPUT.PUT_LINE(v_num);
END;
 /

警告：创建过程时出现编译错误。
SQL> show errors
Errors for PROCEDURE PROC_1:

LINE/COL ERROR
-------- -----------------------------------------------------------------
2/8      PL/SQL: Item ignored
2/8      PLS-00201: identifier 'HR.EMPLOYEES' must be declared
5/1      PL/SQL: SQL Statement ignored
5/39     PL/SQL: ORA-00942: table or view does not exist
7/1      PL/SQL: Statement ignored
7/38     PLS-00320: the declaration of the type of this expression is
         incomplete or malformed

Answer 1

您将需要向用户user1授予对HR对象的访问权限。

已连接为用户HR：

grant select on employees to user1;