Oracle epg configuration issue

Question

Hello,
We have installed Oracle 4.0 on 11gR2 and we have configured it to run with APEX Listener (Listener is on separate machine) and everything is running fine.
Now we want to configure EPG, so we are just following steps mentions in below documentation.
http://docs.oracle.com/cd/E23903_01/doc/doc.41/e21673/otn_install.htm#CHDEIGGI
When we run
SQL> @apex_epg_config.sql /u05/apexwe are getting following error.
PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
old   1: create directory APEX_IMAGES as '&1/apex/images'
new   1: create directory APEX_IMAGES as '/u05/apex/apex/images'
Directory created.
old  47:     if '&IMGUPG' != '' then
new  47:     if '' != '' then
old  48:         l_mv_folder := '&IMGUPG';
new  48:         l_mv_folder := '';
declare
ERROR at line 1:
ORA-22288: file or LOB operation FILEOPEN failed
No such file or directory
ORA-06512: at "SYS.XMLTYPE", line 296
ORA-06512: at line 18Can someone guide what could be the issue.
Regards,
Bala

Answer 1

Hi,
if '&IMGUPG' != '' thenA comparison between 'SOMETHING' and NULL (the empty string in Oracle) using =, != or <> never yields TRUE but always NULL.
See http://stackoverflow.com/questions/7286047/oracle-pl-sql-string-compare-issue
It should read
if '&IMGUPG' is not NULL then