Embeded PLSQL Gateway & 404 page not found issue

Hi
If I use APEX_ITEM.TEXTAREA with Embeded PL SQL Gateway and submit the page, it throws "HTTP 404-page not found" error.
It doesn't happen when I use apache server instead of EPG.
Our production APEX is down because of this issue.
Any help/suggestions would be greately appreciated.
Here are the simple steps to reproduce the same in a EPG environment.
Note: It works fine in apex.oracle.com [http://apex.oracle.com/pls/otn/f?p=20193:6]
Create a blank page with a report region for the following query. Add a self submit button to it. Run the page and hit the submit button and you will get 404-page not found error.
SELECT APEX_ITEM.TEXTAREA(3, 'a' || lpad('z',1999),3,80) COMMENTS
FROM dual
CONNECT BY ROWNUM <=10
Note:
If you want to see this error in the same browser : exec
dbms_epg.set_dad_attribute('APEX',
*'error-style',*
*'DebugStyle');*
Ref: --blocked::[http://daust.blogspot.com/2008/04/troubleshooting-404-not-found-error-on.html]--
To increase the loging level: SQL> execute dbms_epg.set_global_attribute('log-level', 7)
Thanks
Balaji Chellappa

Hi Masa,
I am also facing the same issue. After creating a Target Mapping tile for our custom application, when I save I get the below error :
Configuration changes not saved for tile 'Target Mapping'
Error (404, Not Found) in OData response for PUT "/sap/opu/odata/UI2/PAGE_BUILDER_CUST/PageChipInstances(pageId='X-SAP-UI2-CATALOGPAGE%3Aicch_report',instanceId='00O2THPMYBCTODLKRWF1EBX3F')": HTTP request failed Details: Resource PageChipInstance not found.
I assigned a customizing transport as suggest in your response and saved again, but that did not help either.
The surprising thing is, when our basis consultant (who has SAP_ALL) saves the tiles, he can save them. This tells me that all the necessary services to create/save the tiles are active.
We have tried to trace my userid for missing authorizations - but none was found.
Not sure what is causing the error when I save the tile..
Regards
Kalpana

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