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The Dashboard Designer can connect to multiple types of SQL databases in the Data Source wizard. You can also use data access API to connect to the database and select the required data in code.

The Oracle Data Provider (ODP.NET) is used to connect to Oracle data sources. Make sure the Oracle Data Provider is installed on your machine.

This tutorial describes how to establish a connection to an Oracle database and select the required data.


The appropriate data provider must be installed on the client machine. For information on data providers, refer to the Supported Data Sources article.

Create a Data Source in the Data Source Wizard

To connect to the Oracle database in the Dashboard Designer, do the following steps.

  1. Click the New Data Source button in the Data Source ribbon tab.


  2. On the first page of the invoked Data Source Wizard dialog, select Database and click Next.


  3. On the next page, select the Oracle data provider and specify the required connection parameters.


    • Server name

      Specifies the name of the server to which the connection should be established.

    • User name

      Specifies the user name used to connect to the Oracle database.

    • Password

      Specifies the password used to connect to the Oracle database.

  4. Click Next and specify how to select data from the database.


    You can choose from the following options:

    • Select the Query option and click Run Query Builder... to invoke the Query Builder. The Query Builder allows you to choose the required tables/columns visually and passes the resulting SQL query to the SQL String editor. Subsequently, the text of the generated query returns to the Data Source wizard.


      Click Finish to create the data source.


      If you apply filtering or use query parameters, click Next to specify the parameter settings.

    • Select the Stored Procedure option to select one of the stored procedures from the database.


      Then click Next to specify the parameter settings.

  5. On the final page, you can optionally add query parameters and preview data.


    Click Finish to create the data source.

Create a Data Source in Code

To create a data source that uses a connection to the Oracle database, create the instance of the DashboardSqlDataSource class and perform the following steps.

  1. Specify connection parameters to the Oracle database. Create the OracleConnectionParameters class object and specify the following properties.

    Assign the resulting OracleConnectionParameters object to the SqlDataSource.ConnectionParameters property.


    As an alternative, you can add a connection string with required parameters to the application configuration file. Then, assign the connection string name to the SqlDataSource.ConnectionName property.

  2. Select the required data by specifying the query. You can do this in the following ways.

    • The SelectQuery object allows you to specify a set of tables/columns, which form a SELECT statement when executing a query.
    • The CustomSqlQuery object allows you to specify an SQL query manually.
    • The StoredProcQuery object allows you to perform a stored procedure call to supply the dashboard with data.

    Add the created query to the SqlDataSource.Queries collection exposed by the DashboardSqlDataSource object.

  3. Add the created DashboardSqlDataSource object to the Dashboard.DataSources collection.

The following code snippet shows how to supply the dashboard with data from the Oracle Northwind database.

using DevExpress.DashboardCommon;
using DevExpress.DataAccess.ConnectionParameters;
using DevExpress.DataAccess.Sql;
// ...
            OracleConnectionParameters oracleParams = new OracleConnectionParameters();
            oracleParams.ServerName = "localhost";
            oracleParams.UserName = "Admin";
            oracleParams.Password = "password";

            DashboardSqlDataSource sqlDataSource = new DashboardSqlDataSource("Data Source 1", oracleParams);
            SelectQuery selectQuery = SelectQueryFluentBuilder
                .SelectColumns("CategoryName", "Extended Price")
                .Build("Query 1");