I finally found the problem. I believe the Oracle HTTP Server/OC4J combination sends a bad HTTP Content-Location Header:

marco@linux:~> wget -S http://sles.sonic.net:7777/oratest
--22:41:57--  http://sles.sonic.net:7777/oratest
           => `oratest'
Resolving sles.sonic.net... 192.168.1.107
Connecting to sles.sonic.net|192.168.1.107|:7777... connected.
HTTP request sent, awaiting response...
  HTTP/1.1 301 Moved Permanently
  Date: Sat, 28 Jan 2006 06:42:03 GMT
  Server: Oracle-Application-Server-10g/10.1.2.0.2 Oracle-HTTP-Server
  Cache-Control: private
  Location: http://sles.sonic.net:7777/oratest/
  Connection: close
  Content-Type: application/octet-stream
Location: http://sles.sonic.net:7777/oratest/ [following]
--22:41:57--  http://sles.sonic.net:7777/oratest/
           => `index.html'
Connecting to sles.sonic.net|192.168.1.107|:7777... connected.
HTTP request sent, awaiting response...
  HTTP/1.1 200 OK
  Date: Sat, 28 Jan 2006 06:42:03 GMT
  Server: Oracle-Application-Server-10g/10.1.2.0.2 Oracle-HTTP-Server
  Content-Location: http://sles.sonic.net:12501/oratest/Page1.jsp
  Set-Cookie: JSESSIONID=7f00000230d5675863965c6b4979a0ebc9ce3af82d9c.e34Ma3uPbhqMe34RbxaPbNaRc310n6jAmljGr5XDqQLvpAe; path=/oratest
  Cache-Control: private
  Content-Language: en-US
  Connection: close
  Content-Type: text/html; charset=ISO-8859-1
Length: unspecified [text/html]

    [                                  ] 2,016         --.--K/s

22:41:57 (73.95 MB/s) - `index.html' saved [2016]

See the last Content-Location above, that’s the communication port between the HTTP server and  OC4J:-(

And KDE‘s Konqueror believed that Content-Location when it tried to request more pieces and finally for the POST on the button press:-(

Mozilla/FireFox/IE seem not to care too much about that error. They work.

That solves the last mystery with the OC4J;-)

Have fun,
— Marco

Update Sat Jan 28 12:36:29 PST 2006:

 
See KDE bugs 51185 and 82747. Apparently Konqueror did the right thing but too many servers don’t send the right information in that HTTP Header element.

So now I only have to wait for a released version of KDE 3.5.

Thanks,
— Marco