无法获取消息以转到 SQL Server Service Broker 队列

Question

我正在尝试设置一个简单的 SQL Server Service Broker 消息设置。我正在关注 MS 教程，但无法使以下代码正常工作。一切运行正常，但消息没有出现在队列中。任何人都可以找出问题所在。

谢谢你的帮助。

-- This query returns "1"
SELECT
    Is_Broker_Enabled
FROM Sys.Databases
WHERE Name = 'ActivationTest2';
GO

-- Create the message types.
CREATE MESSAGE TYPE TestRequestMessage VALIDATION = WELL_FORMED_XML;
CREATE MESSAGE TYPE TestReplyMessage VALIDATION = WELL_FORMED_XML;

-- Create the contract.
CREATE CONTRACT TestContract (
    TestRequestMessage SENT BY INITIATOR, 
    TestReplyMessage SENT BY TARGET) ;

-- Create the target queue and service.
CREATE QUEUE ActTestTgtQueue;
CREATE SERVICE ActTestTgtService ON QUEUE ActTestTgtQueue;

-- Create the initiator queue and service.
CREATE QUEUE ActTestInitQueue;
CREATE SERVICE ActTestInitService ON QUEUE ActTestInitQueue;
GO

-- Start a conversation, send the request message.
DECLARE
    @initdlghandle uniqueidentifier,
    @requestmsg nvarchar (100) ;

BEGIN TRANSACTION;

BEGIN DIALOG @initdlghandle 
    FROM SERVICE ActTestInitService 
    TO SERVICE 'ActTestTgtService' 
    ON CONTRACT TestContract 
    WITH ENCRYPTION = OFF;

SET @requestmsg = N'<RequestMsg>Message for tgt service</RequestMsg>';

-- This returns a GUID and the message text above.
SELECT
    @requestmsg AS Sentrequestmsg
  , @initdlghandle AS Handle;

SEND ON CONVERSATION @initdlghandle 
    MESSAGE TYPE TestRequestMessage (@requestmsg) ;

COMMIT TRANSACTION;
GO
-- Check the queue for messages.
-- THIS RETURNS ZERO ROWS.
SELECT
    *
FROM ActTestTgtQueue;
GO

Answer 1

查看数据库中的transmission_status列sys.transmission_queue：

use <testdb>;
go

select transmission_status, * 
from sys.transmission_queue;
go

状态将说明问题是什么。