ORA-01008: not all variables bound

This was one of those “duh” error. I was attempting to retrieve data from Oracle using some simple ADO.NET code, like the code below, but I was receiving the error “ORA-01008: not all variables bound“.

string value = String.Empty;
using (OracleConnection conn = new OracleConnection(connString)) {
    using (OracleCommand comm = new OracleCommand("SELECT Description FROM ScottsTable WHERE ID = :id", conn)) {
        comm.CommandType = CommandType.StoredProcedure;
        comm.Parameters.Add(":id", OracleDbType.Varchar2, 40).Value = "scott";
        conn.Open();
        value = comm.ExecuteScalar().ToString();
    }
}

The problem was I was setting the OracleCommand’s CommandType property to StoredProcedure when it was actually straight text. Removing this line resolved the error.

 

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