Getting error while creating and refreshing report using Universe in Webi 4.0

Hello,

I am getting the below error when I try to build and refresh report using Universe.

"Database error:(CS) "DBDriver failed to load: D:\SAP BusinessObjects\SAP BusinessObjects Enterprise XI4.0

\dataAccess\connectionServer\drivers\lib64\dbd_oci.dll (The specified module could not be found.)*.

(IES 10901)"

Any help would be much appreciated.

Thanks,

Renu