Proc error when invoking oracle directory

Question

why this function throwing error eventhough the directories are created successfully?
SQL> create or replace directory DATADIRECTORY as '/etc';
Directory created.
Elapsed: 00:00:00.04
SQL> create or replace directory LOGDIRECTORY as '/etc';
Directory created.
SQL> sta C:\Project\PK_UTILITIES.sql
Errors for PACKAGE BODY PK_UTILITIES:
LINE/COL ERROR
16/7     PL/SQL: Statement ignored
16/14    PLS-00201: identifier 'DATADIRECTORY' must be declared
24/7     PL/SQL: Statement ignored
24/14    PLS-00201: identifier 'LOGDIRECTORY' must be declared
Create Or Replace Package Body Pk_Utilities As
FUNCTION fn_datadirect
      RETURN VARCHAR2
   IS
   BEGIN
      RETURN datadirectory;
   END fn_datadirect;
   FUNCTION fn_logdirect
      RETURN VARCHAR2
   IS
   BEGIN
      RETURN logdirectory;
   END fn_logdirect;
END;
/

Answer 1

My query is simple and straight forward. I created a directory and need to
get the path of this directory by calling a function. below code just does that
but error...
SQL> select DIRECTORY_NAME          from all_directories;
DIRECTORY_NAME
LOGDIRECTORY
DATADIRECTORY
Elapsed: 00:00:00.07
SQL> sta H:\Project\PK_UTILITIES.sql
Package created.
Elapsed: 00:00:00.03
Warning: Package Body created with compilation errors.
Elapsed: 00:00:01.34
Errors for PACKAGE BODY PK_UTILITIES:
LINE/COL ERROR
19/7     PL/SQL: SQL Statement ignored
20/17    PL/SQL: ORA-00942: table or view does not exist
33/12    PL/SQL: SQL Statement ignored
34/22    PL/SQL: ORA-00942: table or view does not exist
SQL> l 20
20*            from all_directories where DIRECTORY_NAME ='DATADIRECTORY';
---- code-----
FUNCTION fn_datadirect
      RETURN VARCHAR2
   IS
  v_directory varchar2(4000);
   BEGIN
      select DIRECTORY_PATH into v_directory
           from all_directories where DIRECTORY_NAME ='DATADIRECTORY';
      RETURN v_directory;
   END fn_datadirect;
   FUNCTION fn_logdirect
      RETURN VARCHAR2
   IS
    v_directory varchar2(4000);
   BEGIN
           select DIRECTORY_PATH into v_directory
                from all_directories where DIRECTORY_NAME ='LOGDIRECTORY';
           RETURN v_directory;
   END fn_logdirect;
SQL>