Thee issue here may be related to registering the JDBC driver for BigQuery in the JBoss EAP. Take look at the server.log for more errors there. The driver needs be service compatible for automatically to work from Designer. Were there more than one JAR for this? May be you can provide a link, then I can double check. You can manually also register/deploy a module in JBoss EAP, but making it work from Teiid Designer for *preview* is little tricky.