Access a dll file for an oracle adf app deployed on weblogic on linux box

Hi:
My department is trying to move an oracle adf application from oracle application server to weblogic 10.3 application server. After trying for a few weeks, everything looks fine except that the application is not able to access a dll file. For this adf application we use a dll file which is a C program to allow us to grab ip address and mac address for every user's computer for security reason. On our oracle application server on a linux box, everything is fine and the application is able to use access the dll fine. Technically, it is how the dll work. In our login.jspx, we declare a object:
<OBJECT id="objMacAddr" height="0" width="0" classid="CLSID:D69161F0-C2BB-4212-9B67-62B908A07726" codebase="RMacAddress.dll#Version=1,0,0,1">
when the user access our web application, the browser grab the dll file from the server while loading the page and a java script function in the page uses the dll file to grab the ip address and mac address for user's computer.
It works on oracle application server. However, it does not work on Weblogic 10.3 server. Does anyone have similar experience? We have been told by oracle support that Weblogic 10.3 server does not recognize the dll file at all. One thing I don't understand is that both our oracle application and weblogic 10.3 are on linux box. Why dll works on oralce application server but not on weblogic 10.3 server? This issue has bothered us for quite a few weeks already. I just hope that anyone on this forum gives us some kind of hint or direction.
Thanks,
Jack

Also,
I checked the "monitoring" window of my datasource on weblogic server and saw that there are no failed database connections. So, the problem of a broken database connectivity can be ruled out.
--Vivek

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