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Create a System DSN

The following steps describe how to create a system Data Source Name (DSN) for the mongosqld process. A DSN is a saved configuration which describes a database connection to be used by an ODBC driver. Once defined and registered, a DSN can be used to connect to the BI Connector from several MySQL clients.


Before creating a DSN, you should:

  • Download and install the C Authentication Plugin for your platform from the releases page.

  • Download and install the MySQL Connector/ODBC driver (Version 5.3.10) for your platform. If you plan to use BI Connector with SSL enabled, you should use the MySQL Enterprise Edition installer. Otherwise you can use the Community Edtion.


    The BI Connector is only compatible with version 5.3.x of the MySQL Connector/ODBC driver.

Create a System DSN (Windows)


Start the Microsoft ODBC Sources program as user administrator.

To run the program as administrator, right click on the application icon and select “Run as administrator”).


Select the System DSN tab.


Click the Add button.

Screenshot of the Windows ODBC Administrator application

Select MySQL ODBC Unicode Driver from the list of available drivers.


Fill in the necessary form fields.

Click the Details button to expose the lower half of the form.

The following form fields are required:

Field Name Description
Data Source Name A name of your choice.
TCP/IP Server Address of the server where your mongosqld process is running. If you have enabled BI Connector on MongoDB Atlas, you can find the hostname of the server where mongosqld is running in the connection information for your cluster.
Port Port number of your mongosqld process.

Required when running with --auth enabled and when connecting to an Atlas BI Connector instance. Username of the MongoDB user who is authenticated to use your target database. Append the name of the authentication database to the username in the format:


For example, if user dbUser is authenticated in the admin database, the User field should contain the string dbUser?source=admin.

Password Required when running with --auth enabled. The authenticated user’s password.
Database The name of the database to connect to, e.g. test.

Required when running with --auth enabled. The default authentication method. To use the authentication plugin, fill in this field with the string mongosql_auth.


The Authentication field is at the bottom of the form. Be careful not to miss it.

The following example configuration assumes the following:

  • A mongosqld instance running on localhost port 3307 with authentication enabled.
  • A mongod instance running with authentication enabled.
  • A MongoDB user named dbUser who is authenticated to use the test database.

The values you enter may be different.

Screenshot of the Windows ODBC Administrator application

Click the Test button to test the ODBC connection.

If the connection is successful, click OK to add the DSN. If the connection fails, check to make sure your MongoDB user is correctly authenticated for the database named in the connection, and that the authentication plugin is installed.