Hi vchiem, Thanks ! Using TIBCO Oracle driver solved the error. I have created a report with a sql query, and configured the report DataSource to be the virtual DS created. But when running the report I get another error : "org.teiid.api.exception.query.QueryResolverException: Group does not exist: HDM_DS_Tibco.DEVICE" I'm not sure how to put the alias in order for the query to work. I tried schema name, Datasource name, but nothing works. Any recommandations for me ? Thanks.