Oracle Error : ORA-12170 : TNS Connect timeout occured (WIS 10901)

Hi,

I have a strange behaviour in my BO XI environnement (BO XI 3.1 sp3 / windows2008 R2 / websphere 7.0)

I try to refresh a webi document using the java applet and I have the following message : "ORA-12170 : TNS Connect timeout occured (WIS 10901)" (the error occurs about 20 seconds only)

What is strange is that the same webi document works perfectly if I use the RichClient...

The SQL request works fine (tested in Oracle)

Any help on this case would be greatly appreciated

Thanks,

David