In general, the SqlDataSource wizard uses standard ADO.NET classes associated with the selected .NEt data provider to retrieve data. If the data can be retrieved in code in a DataSet, the SqlDataSource would use the same logic. Issues that may occur are related to how different .NET data providers implement reading and passing values to parameters, and executing queries.
Please post the SqlDataSource settings and the exception's stack trace when you use the Oracle.ManagedDataAccess.Client
provider. Include also details about the used SQL query.
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