存储过程异常 .

create or replace procedure sp_OCN_Alarm(import_Date in date,v_t_step1 in varchar2(50))as    v_sql varchar2(4000);begin    /*v_t_step1:='V_STEP1';    import_Date:=to_date('2012-04-01','yyyy-mm-dd');*/    /************************************************************/    /**获取 temp_t_customer 表数据                             **/    /************************************************************/    v_sql:='    insert into temp_t_customer(INSERT_MONTH,Userid,customerid,cust_name,address_detail,telephone1,telephone2,custdistrictid)    select         '||to_char(import_Date,'yyyymm')||' as INSERT_MONTH,        '||to_char(import_Date,'yyyymm')||'||a.CustomerID,        a.CustomerID ,        a.name ,        a.custdetailaddress,        a.telephone as TELEPHONE1,        a.telephonemobile as TELEPHONE2,        a.custdistrictid    from boss2.t_customer'||to_char(import_Date,'yyyymm')||'  a';    execute immediate v_sql;  end sp_OCN_Alarm;ORA-06550: line 5, column 9:PLS-00905: object OCN.SP_OCN_ALARM is invalidORA-06550: line 5, column 9:PL/SQL: Statement ignored    

create or replace procedure sp_OCN_Alarm(import_Date in date,v_t_step1 in varchar2(50))/*应该使用*/create or replace procedure sp_OCN_Alarm(import_Date in date,v_t_step1 in varchar2)
------解决方案--------------------
v_t_step1 in varchar2(50)参数定义错了，定义参数不需要定义长度大小