PL/SQL process: issue with wording - oracle

Question

I am trying to create a page process in Oracle APEX 4.1. Specifically, When a button on this page is process submitting the page, I want this PL/SQL query to work. I don't have much of an understanding of PL/SQL and am looking to find out how to figure this issue out.
What I want the query to do:
I would like this page process to loop through each row in the EMPLOYEE table that I have in a database for APEX. For each row, I want to move the username, group and password into their own variables, and then to create an APEX user using the APEX_UTIL_CREATE_USER process. I want this to be done with every employee in the table.
I don't know specifically what is wrong with this PL/SQL, as I have never had to use it before. I would greatly appreciate any help anyone can give me with this. I will show the query and the error message below.
PL/SQL query:
PROCEDURE deploy_employee
(EMP_USERNAME IN EMPLOYEE)
IS
BEGIN
FOR indx IN NVL (EMP_USERNAME.FIRST, 0)
.. NVL (EMP_USERNAME.LAST, -1)
LOOP
emp_user EMPLOYEE.EMP_USERNAME%TYPE;
emp_pass EMPLOYEE.EMP_PASSWORD%TYPE;
emp_group EMPLOYEE.EMP_GROUP%TYPE;
BEGIN
BEGIN
select EMP_USERNAME into emp_user from EMPLOYEE;
select EMP_PASSWORD into emp_pass from EMPLOYEE;
select EMP_GROUP into emp_group FROM EMPLOYEE;
EXCEPTION
WHEN NO_DATA_FOUND THEN
emp_user := NULL;
emp_pass := NULL;
emp_group := NUL;
END;
APEX_UTIL.CREATE_USER(
p_user_name => emp_user,
p_web_password => emp_pass,
p_user_group => emp_gorup,
);
END;
END LOOP;
END deploy_employee;
Error message:
1 error has occurred ORA-06550: line 2, column 1: PLS-00103:
Encountered the symbol "PROCEDURE" when expecting one of the
following: ( begin case declare end exception exit for goto if loop
mod null pragma raise return select update while with <an identifier>
<a double-quoted delimited-identifier> <a bind variable> << continue
close current delete fetch lock insert open rollback savepoint set sql
execute commit forall merge pipe purge The symbol "declare" was
substituted for "PROCEDURE" to continue. ORA-065
The page number is 2.
Once again I would be greatly appreciative of any help I could gain.

Answer 1

There are multiple issues with your procedure.
You are missing the CREATE keyword, and that's the root cause for the compile time error. PLS-00103.
See the documentation for more details on CREATE PROCEDURE statement to create a standalone stored procedure or a call specification.
EMP_USERNAME IN EMPLOYEE
The data type declaration for the IN parameter is incorrect. You need to do it as:
EMP_USERNAME IN EMPLOYEE.EMP_USERNAME%TYPE
The FOR LOOP is syntactically incorrect.
FOR indx IN NVL (EMP_USERNAME.FIRST, 0) .. NVL (EMP_USERNAME.LAST, -1)
You could do it as:
SQL> CREATE OR REPLACE
2 PROCEDURE deploy_emp(
3 i_emp emp.empno%type)
4 IS
5 emp_user VARCHAR2(50);
6 BEGIN
7 FOR indx IN
8 (SELECT ename FROM emp
9 )
10 LOOP
11 BEGIN
12 BEGIN
13 SELECT ename INTO emp_user FROM emp WHERE empno = i_emp;
14 EXCEPTION
15 WHEN NO_DATA_FOUND THEN
16 emp_user := NULL;
17 END;
18 END;
19 END LOOP;
20 dbms_output.put_line(emp_user);
21 END deploy_emp;
22 /
Procedure created.
SQL> sho err
No errors.
Now, let's test it and see:
SQL> set serveroutput on
SQL> EXEC deploy_emp(7369);
SMITH
PL/SQL procedure successfully completed.
SQL>

Answer 2

use CREATE PROCEDURE to create a new stored procedure or EXEC <proc name> to execute it

Answer 3

If you whant do all this in a page process, you don't need to create procedure. Put this code in the source of your page process:
BEGIN
FOR indx IN (
select *
from EMPLOYEE
) LOOP
APEX_UTIL.CREATE_USER(
p_user_name => indx.EMP_USERNAME,
p_web_password => indx.EMP_PASSWORD,
p_user_group => indx.EMP_GROUP,
);
END LOOP;
END;