ORA-01843 not a valid month

 

CREATE OR REPLACE PACKAGE emp_actions
AS                                                    -- package specification
   PROCEDURE hire_employee (employee_id       NUMBER,
                            last_name         VARCHAR2,
                            first_name        VARCHAR2,
                            email             VARCHAR2,
                            phone_number      VARCHAR2,
                            hire_date         DATE,
                            job_id            VARCHAR2,
                            salary            NUMBER,
                            commission_pct    NUMBER,
                            manager_id        NUMBER,
                            department_id     NUMBER);

   PROCEDURE fire_employee (emp_id NUMBER);

   FUNCTION num_above_salary (emp_id NUMBER)
      RETURN NUMBER;
END emp_actions;
/

/* Formatted on 2012-07-27 15:24:06 (QP5 v5.114.809.3010) */
CREATE OR REPLACE PACKAGE BODY emp_actions
AS                                                             -- package body
   -- code for procedure hire_employee
   PROCEDURE hire_employee (employee_id       NUMBER,
                            last_name         VARCHAR2,
                            first_name        VARCHAR2,
                            email             VARCHAR2,
                            phone_number      VARCHAR2,
                            hire_date         DATE,
                            job_id            VARCHAR2,
                            salary            NUMBER,
                            commission_pct    NUMBER,
                            manager_id        NUMBER,
                            department_id     NUMBER)
   IS
   BEGIN
      INSERT INTO employees
        VALUES   (employee_id,
                  last_name,
                  first_name,
                  email,
                  phone_number,
                  hire_date,
                  job_id,
                  salary,
                  commission_pct,
                  manager_id,
                  department_id);
   END hire_employee;

   -- code for procedure fire_employee
   PROCEDURE fire_employee (emp_id NUMBER)
   IS
   BEGIN
      DELETE FROM   employees
            WHERE   employee_id = emp_id;
   END fire_employee;

   -- code for function num_above salary
   FUNCTION num_above_salary (emp_id NUMBER)
      RETURN NUMBER
   IS
      emp_sal     NUMBER (8, 2);
      num_count   NUMBER;
   BEGIN
      SELECT   salary
        INTO   emp_sal
        FROM   employees
       WHERE   employee_id = emp_id;

      SELECT   COUNT ( * )
        INTO   num_count
        FROM   employees
       WHERE   salary > emp_sal;

      RETURN num_count;
   END num_above_salary;
END emp_actions;
/

执行下面语句报错

CALL emp_actions.hire_employee(300, 'Belden', 'Enrique', 'EBELDEN',
'555.111.2222', '30-AUG-04', 'AC_MGR', 9000, .1, 101, 110);

ORA-01843 not a valid month

解决：

当我们在一个中文环境的客户端使用如下sql语句，数据库会报告一个ORA-01843的错误，这是因为客户端是中文环境，格式mon就不能用英文的月份写法，必须用中文的“六月”如果不想修改sql语句运行的话，就需要在执行该语句之前，使用alter session 命令将nls_date_language修改为american，如下：

alter session set nls_date_language='american'     --以英语显示日期