How can I finish the last step in the 2 Day Plus Appl Express Developer

Question

Hi,
I try to follow doing the steps the Chapter 8 How to Upload and Download Files in an Application of the 2 Day Plus Application Express Developer, after I had finished
the input to Oracel XE (all steps in this chapter and the procedure in 'Downloading Documents from the Custom Table'), I open the "run Page 1 icon" , the procedure seems no running and cause the error 'Page cannot be found'.
I doubt the type is wrong or correct "#OWNER#.download_my_file?p_file=#ID#".
Are there any one can tell me ?
Regards,
Simon Wong
Message was edited by:
user505611

Answer 1

Simon,
here is the full example. Please follow the steps closely. Input exactly what is written in bold characters (without the line numbers though).
Here we go (in a dos command box):
C:\WINDOWS\system32>sqlplus system@xe
SQL*Plus: Release 10.2.0.1.0 - Production on Sun Aug 13 12:48:24 2006
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
Connected to:
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
*** Show more detailed error information in the browser ***
SQL> exec dbms_epg.set_dad_attribute('APEX', 'error-style', 'DebugStyle');
PL/SQL procedure successfully completed.Now try to run the following url in the browser: http://127.0.0.1:8080/apex/hr.hello_world
This will give you the following error message:
hr.hello_world: PROCEDURE DOESN'T EXIST
  DAD name: apex
  PROCEDURE  : hr.hello_world
  URL        : http://XDB HTTP Server:8080/apex/hr.hello_world
  PARAMETERS :
  ===========Now continue with the sqlplus - session :
*** Switch session to user HR to create procedure hello world ***
SQL> alter session set current_schema=HR;
Session altered.
SQL> CREATE OR REPLACE procedure hello_world
2 is
3 begin
4 htp.p('hello world');
5 end;
6 /
Procedure created.
*** check to see whether the procedure was created properly ***
SQL>   desc hr.hello_world;
PROCEDURE hr.hello_world
*** grant execute on procedure to account ANONYMOUS ***
SQL> begin
2 execute immediate 'grant execute on hello_world to anonymous';
3 end;
4 /
PL/SQL procedure successfully completed.
*** Switch to user FLOWS_020100 ***
SQL> alter session set current_schema=FLOWS_020100;
Session altered.
*** for testing, disable the security mechanism ***
SQL> CREATE OR REPLACE function wwv_flow_epg_include_mod_local(
2 procedure_name in varchar2)
3 return boolean
4 is
5 begin
6 return true;
7 end;
8 /
Function created.Running the url again should work now, the security mechanism is disabled.
If this works, we can enable the security mechanism again:
*** now create the function again, checking for the proper procedure name ***
SQL> CREATE OR REPLACE function wwv_flow_epg_include_mod_local(
2 procedure_name in varchar2)
3 return boolean
4 is
5 begin
6 if upper(procedure_name) in ('HR.HELLO_WORLD') then
7 return true;
8 else
9 return false;
10 end if;
11 end;
12 /
Function created.
*** remove the debugging information ***
SQL> exec dbms_epg.delete_dad_attribute('APEX', 'error-style')
PL/SQL procedure successfully completed.You don't need to restart any services inbetween the outlined steps and you shouldn't have to change any security settings in your browser. It is all done in the database.
If it still doesn't work, please post your error messages from the browser here.
Regards,
~Dietmar.