doc.FAQ.HowDoITroubleshootAFailedODBC-ODBCBridgeConnection

Ensure that the non- OpenLink Data Source Name connects to the target database.
Ensure that OpenLink 's Single-Tier client components or Multi-Tier server components are installed on the machine that contains the non- OpenLink Data Source Name.
Multi-Tier users ensure that oplrqb and odbc_mv appear in the /bin sub-directory of the OpenLink server components installation.
Ensure that all Windows-based Data Source Names are System Data Source Names.
Ensure that you pass the exact name of the non- OpenLink Data Source to the OpenLink Data Source. Multi-Tier users pass this name in the Database field of their OpenLink Data Sources.
Multi-Tier users ensure that "Odbc" appears in the Domain or Server Type field of the Multi-Tier Data Source Name. (Case matters!)
Single-Tier Installation or Connection Problem