BI 4.0 explorer tns issue

hi All,

I have converted a universe from .unv to .unx and I can build a webi report on the new .unx universe through launchpad. when i try to build a infospace on this universe i get the below error msg-

[] <com.businessobjects.dsl.commons.exception.NestedException: ORA-12154: TNS:could not resolve the connect identifier specified
>

Any thoughts?