Pl/sql function overload package program and how to execute

Question

--creation overload package
create or replace package pkg_overload is
procedure get_emp(p_empid in number,p_empsal out number);
procedure get_emp(p_ename in varchar2, p_empsal out number);
end;
-- define its body
create or replace package body pkg_overload is
procedure get_emp(p_empid in number,p_empsal out number) is
begin
select sal
into p_empsal
from emp
where empno=p_empid;
end;
procedure get_emp (p_ename in varchar2,p_empsal out number) is
begin
select sal
into p_empsal
from emp
where ename=p_ename;
end;
end pkg_overload;
/* output of this :PACKAGE pkg_overload compiled
Warning: execution completed with warning
-- My question is about the warning and how to execute it
--I tried that way to execute that program
/*variable g_sal number;
execute pkg_overload.get_emp(77934,:g_sal);
RESULT
Error starting at line 911 in command:
execute pkg_overload.get_emp(77934,:g_sal)
Error report:
ORA-06550: line 1, column 7:
PLS-00905: object SUBHAJIT.PKG_OVERLOAD is invalid
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
06550. 00000 - "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
*Action:
emp table code
-- File created - Thursday-April-12-2012
-- DDL for Table EMP
CREATE TABLE "SUBHAJIT"."EMP"
(     "EMPNO" NUMBER(4,0),
     "ENAME" VARCHAR2(10 BYTE),
     "JOB" VARCHAR2(9 BYTE),
     "MGR" NUMBER(4,0),
     "HIREDATE" DATE,
     "SAL" NUMBER(7,2),
     "COMM" NUMBER(7,2),
     "DEPTNO" NUMBER(2,0)
) SEGMENT CREATION IMMEDIATE
PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "USERS" ;
REM INSERTING into SUBHAJIT.EMP
Insert into SUBHAJIT.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7369,'SMITH','CLERK',7902,to_date('17-DEC-80','DD-MON-RR'),800,null,20);
Insert into SUBHAJIT.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7499,'ALLEN','SALESMAN',7698,to_date('20-FEB-81','DD-MON-RR'),1600,300,30);
Insert into SUBHAJIT.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7521,'WARD','SALESMAN',7698,to_date('22-FEB-81','DD-MON-RR'),1250,500,30);
Insert into SUBHAJIT.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7566,'JONES','MANAGER',7839,to_date('02-APR-81','DD-MON-RR'),2975,null,20);
Insert into SUBHAJIT.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7654,'MARTIN','SALESMAN',7698,to_date('28-SEP-81','DD-MON-RR'),1250,1400,30);
Insert into SUBHAJIT.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7698,'BLAKE','MANAGER',7839,to_date('01-MAY-81','DD-MON-RR'),2850,null,30);
Insert into SUBHAJIT.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7782,'CLARK','MANAGER',7839,to_date('09-JUN-81','DD-MON-RR'),2450,null,10);
Insert into SUBHAJIT.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7788,'SCOTT','ANALYST',7566,to_date('09-DEC-82','DD-MON-RR'),3000,null,20);
Insert into SUBHAJIT.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7839,'KING','PRESIDENT',null,to_date('17-NOV-81','DD-MON-RR'),5000,null,10);
Insert into SUBHAJIT.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7844,'TURNER','SALESMAN',7698,to_date('08-SEP-81','DD-MON-RR'),1500,0,30);
Insert into SUBHAJIT.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7876,'ADAMS','CLERK',7788,to_date('12-JAN-83','DD-MON-RR'),1100,null,20);
Insert into SUBHAJIT.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7900,'JAMES','CLERK',7698,to_date('03-DEC-81','DD-MON-RR'),950,null,30);
Insert into SUBHAJIT.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7902,'FORD','ANALYST',7566,to_date('03-DEC-81','DD-MON-RR'),3000,null,20);
Insert into SUBHAJIT.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) values (7934,'MILLER','CLERK',7782,to_date('23-JAN-82','DD-MON-RR'),1300,null,10);
-- Constraints for Table EMP
ALTER TABLE "SUBHAJIT"."EMP" MODIFY ("EMPNO" NOT NULL ENABLE);
Edited by: 923746 on Apr 12, 2012 1:18 PM

Answer 1

>
Warning: execution completed with warning
>
The package compiled with warnings. Post the exact error message.
The code compiled with no errors for me in the SCOTT schema using that EMP table.