plsql procedures while executing an error invalid identifier 00904 - oracle

Question

Error message
CREATE TABLE DEPARTMENT(DID INT,DNAME VARCHAR2(20),DLOC VARCHAR2(20));
INSERT INTO DEPARTMENT VALUES(101,'SRINATH','HINDUPUR');
INSERT INTO DEPARTMENT VALUES(102,'SAINATH','ANANTAPUR');
create or replace PROCEDURE ADD_DEPARTMENT
(P_DID IN DEPARTMENT.DID%TYPE,
P_DNAME IN DEPARTMENT.DNAME%TYPE,
P_DLOC IN DEPARTMENT.DLOC%TYPE,
P_ERROR_MSG OUT VARCHAR2)
IS
BEGIN
INSERT INTO DEPARTMENT(DID,DNAME,DLOC)VALUES(P_DID,P_DNAME,P_DLOC);
COMMIT;
EXCEPTION
WHEN OTHERS THEN
P_ERROR_MSG:=SQLERRM;
END ADD_DEPARTMENT;
iam writing a simple procedure try to excute but it shows object_id:invalid identifier how i can solve
complete procedure execution image

Answer 1

One of your column names may be wrong in the parameter list/insert. Try just using varchar2 for all of them and see if that helps
create or replace PROCEDURE ADD_DEPT2
(P_DEPTNO IN VARCHAR2,
P_DNAME IN VARCHAR2,
P_LOC IN VARCHAR2,
P_ERROR_MSG OUT VARCHAR2)
IS
BEGIN
INSERT INTO DEPT1(DEPTNO,DNAME,LOC)VALUES(P_DEPTNO,P_DNAME,P_LOC);
COMMIT;
EXCEPTION
WHEN OTHERS THEN
P_ERROR_MSG :=SQLERRM;
END ADD_DEPT2;

Answer 2

"it will come same error can be displayed"
No, no it won't. Let's prove it by running the code you posted.
Here is your table:
SQL> CREATE TABLE DEPARTMENT(DID INT,DNAME VARCHAR2(20),DLOC VARCHAR2(20));
Table created.
SQL> INSERT INTO DEPARTMENT VALUES(101,'SRINATH','HINDUPUR');
1 row created.
SQL> INSERT INTO DEPARTMENT VALUES(102,'SAINATH','ANANTAPUR');
1 row created.
SQL>
Here is your procedure:
SQL> create or replace PROCEDURE ADD_DEPARTMENT
2 (P_DID IN DEPARTMENT.DID%TYPE,
3 P_DNAME IN DEPARTMENT.DNAME%TYPE,
4 P_DLOC IN DEPARTMENT.DLOC%TYPE,
5 P_ERROR_MSG OUT VARCHAR2)
6 IS
7 BEGIN
8 INSERT INTO DEPARTMENT(DID,DNAME,DLOC)VALUES(P_DID,P_DNAME,P_DLOC);
9 COMMIT;
10 EXCEPTION
11 WHEN OTHERS THEN
12 P_ERROR_MSG:=SQLERRM;
13 END ADD_DEPARTMENT;
14 /
Procedure created.
SQL>
And lo! not only does it compile but it runs without error too.
SQL> set serveroutput on
SQL> declare
2 v varchar2(128);
3 begin
4 add_department(666, 'Area 51', 'Roswell', v);
5 end;
6 /
PL/SQL procedure successfully completed.
SQL> select * from department;
DID DNAME DLOC
---------- -------------------- --------------------
101 SRINATH HINDUPUR
102 SAINATH ANANTAPUR
666 Area 51 Roswell
SQL>
So once again I ask, what is the problem?
"PLS-00905: object SCOTT.ADD_DEPARTMENT is invalid"
In SQL*Plus:
Connect as SCOTT
alter procedure add_department compile;
show errors
Or apply the equivalent sequence for whatever IDE you use to write your code.