If you ever use the Oracle ODP.Net component with SqlDataSource and get the ORA-01036 Illegal variable name/number error, it is mainly due to the fact that your number of parameters does not match the number in your Insert, Update, or Delete query. I had this problem using a ComposedKey with the ASPxDataGridView from DevExpress. You need to remove the ComposedKey field before executing the query.
Here is the conversation on ASP.Net that helped me resolve this issue.
See also
- Microsoft Agent Framework: First Agent, MCP, and Multi-Agent Workflows
- MCP in C#: Exposing Your Own Tools to Any AI Client
- Modernizing Legacy ASP.NET Projects in 2025
- Inside the Architecture: Patterns, Data Modeling, and Extensibility in Mes Recettes
- Mes Recettes: Building a Modern Recipe Index with Blazor WebAssembly & Supabase