SQL Service Broker example not working - sql

Question

I have two databases on the same instance.
One called ICMS, one called CarePay_DEV1
When a change happens in ICMS (Source), it needs to send a message to CarePay_Dev1 (Destination).
I am new to Broker Services, and am trying to make a message go to the queue. Once that works, I will hopefully get the data into a table in the destination, and that will then be processed by .Net code. But I just want something to appear in the destination first.
So, step 1: I enable the service on the two databases
-- Enable Broker on CarePay
ALTER DATABASE CarePay_Dev1
SET ENABLE_BROKER;
-- Enable Broker on Source
ALTER DATABASE ICMS_TRN
SET ENABLE_BROKER;
Step 2: Create the message type on the source and destination.
-- Create Message Type on Receiver:
USE CarePay_DEV1
GO
CREATE MESSAGE TYPE [IcmsCarePayMessage]
VALIDATION=WELL_FORMED_XML;
-- Create Message Type on Sender:
USE ICMS_TRN
GO
CREATE MESSAGE TYPE [IcmsCarePayMessage]
VALIDATION=WELL_FORMED_XML;
I then create the Contacts, on both databases:
-- Create Message Type on Receiver:
USE CarePay_DEV1
GO
CREATE MESSAGE TYPE [IcmsCarePayMessage]
VALIDATION=WELL_FORMED_XML;
-- Create Message Type on Sender:
USE ICMS_TRN
GO
CREATE MESSAGE TYPE [IcmsCarePayMessage]
VALIDATION=WELL_FORMED_XML;
I then create the message queues on both databases:
-- CREATE Sending Messagw Queue
USE ICMS_TRN
GO
CREATE QUEUE CarePayQueue
-- CREATE Receiving Messagw Queue
USE CarePay_Dev1
GO
CREATE QUEUE CarePayQueue
And finally, I create the services on both databases:
-- Create the message services
USE ICMS_TRN
GO
CREATE SERVICE [CarePayService]
ON QUEUE CarePayQueue
USE CarePay_DEV1
GO
CREATE SERVICE [CarePayService]
ON QUEUE CarePayQueue
Now, the queues should be ready, so then I try and send something from the source to the destination:
-- SEND THE MESSAGE!
USE ICMS_TRN
GO
DECLARE #InitDlgHandle UNIQUEIDENTIFIER
DECLARE #RequestMessage VARCHAR(1000)
BEGIN TRAN
BEGIN DIALOG #InitDlgHandle
FROM SERVICE [CarePayService]
TO SERVICE 'CarePayService'
ON CONTRACT [IcmsCarePayContract]
SELECT #RequestMessage = N'<Message>The eagle has landed!</Message>';
SEND ON CONVERSATION #InitDlgHandle
MESSAGE TYPE [IcmsCarePayMessage] (#RequestMessage)
COMMIT TRAN
I get:
Command(s) completed successfully.
But then when I try select from the destination queue, it's empty.
/****** Script for SelectTopNRows command from SSMS ******/
SELECT TOP 1000 *, casted_message_body =
CASE message_type_name WHEN 'X'
THEN CAST(message_body AS NVARCHAR(MAX))
ELSE message_body
END
FROM [CarePay_DEV1].[dbo].[CarePayQueue] WITH(NOLOCK)
Can anyone spot the issue? I can't see where I tell the destination which database to send the message to - which could be part of the issue?

Answer 1

I highly recommend you read Adam Machanic's Service Broker Advanced Basics Workbench, specifically the section entitled "Routing and Cross-Database Messaging".
In addition, for future troubleshooting you may want to use SSBDiagnose or also read through Remus Rusanu's numerous articles on the topic

Answer 2

I think the initiator service sent a message to yourself. Try to change the name of destination (terget) service.