Running java bean from forms9i on win xp

hi all,
I have a form that uses java bean to write txt file on client computer. java bean connects to database and uses it's data to create txt file. everything runs fine on client with win2000, but with windows xp (professional, sp2, ie6.0) there seems to be some problem with connecting to db (returned connection is null). my win xp firewall is turned off, security settings (including java and activeX) are low, forms version is 9.0.4.0.19. java code seems to be ok, i think it has something to do with forms/xp compatibility. has anyone had similar problem?
Thanks for any response,
Albert

Thanks for your response. First version of our program was running on webutil, but as it turned out it was lacking performance. New version, with our custom java bean is much faster.
As I wrote it works on Windows 2000. It also works on WinXP as a standalone application. Only when deployed to Oracle Forms with XP client it fails. Error occures during retreiving connection to db when calling DriverManager.getConnection method. No exception is thrown, retreived connection is null.
Thanks for any help
Albert

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