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Quick Start: Accessing REST data sources using basic authentication : Troubleshooting setup/connection issues : Common setup/connection issues
  

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Common setup/connection issues

You are experiencing a setup/connection issue if you are encountering an error or hang while you are trying to make a database connection with the JDBC driver or are trying to configure the JDBC driver. Some common errors that are returned by the driver if you are experiencing a setup/connection issue include:
*class not found
*Specified driver could not be loaded.
*Data source name not found and no default driver specified.
*Unable to connect to destination.
*Invalid username/password; logon denied.