var totalNumRowsParam = new OracleParameter("total_num_rows", OracleType.Int32) { Direction = ParameterDirection.Output };
var resultsParam = new OracleParameter("results", OracleType.Cursor) { Direction = ParameterDirection.Output };
var temp = new List<Blah>();
using (var conn = new OracleConnection(connectionString))
{
	conn.Open();

	using (var command = conn.CreateCommand())
	{
		command.CommandType = CommandType.StoredProcedure;
		command.CommandText = "blah_search";

		command.Parameters.Add(new OracleParameter("start_index", (object)0));
		command.Parameters.Add(new OracleParameter("num_rows", (object)100000));
		command.Parameters.Add(totalNumRowsParam);
		command.Parameters.Add(resultsParam);
		command.Parameters.Add(new OracleParameter("results1", OracleType.Cursor) { Direction = ParameterDirection.Output });

		OracleString s;
		command.ExecuteOracleNonQuery(out s);
		using(var reader = (OracleDataReader)resultsParam.Value)
		{
			while (reader.Read())
			{
				var item = new Blah();
				temp.Add(item);
				item.Name = (string)reader["name"]; // ...
			}
		}
	}
}