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我正在嘗試使用ODP.Net向Oracle過程傳遞一個字節數組（byte [] []）的數組，這是Oracle原始數組。出現以下情況例外：如何使用ODP.Net傳遞字節數組的數組？
Oracle.DataAccess.Client.OracleException是由用戶代碼 消息= ORA-06550未處理的：行1，列52： PLS-00418：陣列綁定類型必須匹配PL/SQL錶行鍵入 ORA-06550：第1行，第7列： PL/SQL：語句忽略 源= Oracle數據提供程序的.NET 錯誤碼= -2147467259
我傳遞的字符串數組到Oracle程序沒有任何問題，但字節數組的數組是一個問題。這裏是我的C＃代碼傳遞的byte [] []的程序：
conn = new OracleConnection(tm_connectStr);
saveAnswers = new OracleCommand(commandName, conn);
saveAnswers.CommandType = CommandType.StoredProcedure;
// Input params
//byte array of hashed answers.
byte[][] answers = userAnswers.Select(a => a.Answer).ToArray<byte[]>(); //a.Answer is already a byte array.
OracleParameter pAnswers = saveAnswers.Parameters.Add("p_answers_tab", OracleDbType.Raw, ParameterDirection.Input);
pAnswers.CollectionType = OracleCollectionType.PLSQLAssociativeArray;
pAnswers.Value = answers;
pAnswers.Size = answers.Length;
if (conn.State != ConnectionState.Open) conn.Open();
saveAnswers.ExecuteNonQuery(); //This line throws exception.
Oracle過程是：
PROCEDURE create_answers(
p_answers_tab IN g_param_raw_tab_type
) IS
BEGIN
FOR i IN p_answers_tab.FIRST .. p_answers_tab.LAST LOOP
INSERT INTO answers
(
answer,
created_ts
)
VALUES (
p_answers_tab(i),
SYSTIMESTAMP
);
END LOOP;
END create_answers;
而且表結構是：
Table name: Anwers
1) Coulmn name: anwer, Data type: Raw
2) Coulmn name: created_ts, Data type: Timestamp(6)
任何見解是不勝感激。