SQL Server Service Broker Examples
Jul 17, 2005
Recently there has been questions on some of the newsgroups about examples for SQL Server Service Broker. So, yesterday on a flight back to England I crofted up three different SQL Server projects as examples: LocalSampleRemoteSampleServer1RemoteSampleServer2
All three examples are jus your very basic Hello World? example, but they show: LocalSample communication between two databases on the same SQL server instance. MasterKeys in a database and the database being TrustWorthyRemoteSampleServerX These two samples are meant to run on two different machines/instances and in the samples you set up both transport security and dialog security by using Certificates.
Download the zip file from here [0], unzip and read the README.txt file, and Have Fun!!
[0] : http://staff.develop.com/nielsb/code/servicebrokerexamples.zip
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Feb 16, 2008
Hello, I receive this error "The SQL Server Service Broker for the current database is not enabled, and as a result query notifications are not supported. Please enable the Service Broker for this database if you wish to use notifications." I attach the database in Management Studio to query and enable the broker using the scrip below but to no avail. ALTER DATABASE DataName SET ENABLE_BROKER β''<<------successfulandSELECT is_broker_enabled FROM sys.databases WHERE name = 'Database name' β'''<<-------value is 1 Global.asax ... Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs) System.Data.SqlClient.SqlDependency.Start(ConfigurationManager.ConnectionStrings("dataConnectionString1").ConnectionString) End Sub...Web.config ... <connectionStrings> <add name="dataConnectionString1" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|jbp_data.mdf;Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient" /> <add name="ASPNETDBConnectionString" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|ASPNETDB.MDF;Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient" /> </connectionStrings>... Hope you could help. cheers,imperialx
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Sep 10, 2007
How to prevent the hang on the initator service broker if the target service broker is not started?
Our case has two service brokers (two databases), sometime, the target is need to turn off. But the sitation is the initator service broker (in fact, the message is sent from triggers) become hang, I want to prevent this case and continue to operation, and the messages should queue and will continue to send to target service broker when it startup. How should I do?
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Apr 5, 2007
Hi,
I am struggling with the position SSB could take in an SOA. If I would want a broker in the general sense, meaning an intermediary sitting between applications which exchange information through messaging, would SSB be a good candidate? I know Biztalk is probably the primary candidate, but in my scenario I would end up with Biztalk apps with empty orchestrations. Also, I think Biztalk is more expensive to manage. So I am looking for a lightweight broker for a simple SOA targeted at application interoperability, no fancy business processes in sight.
I look forward to some responses.
Kind regards,
Neeva
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Jun 19, 2005
Can't believe no one has commented on this in here yet. If you're into SQL Server Service Broker (and you are if you are reading this forum), you must go over and take Rushi's Service Broker Challange.
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Jul 23, 2007
Does SQL SVR 2005 Service Broker use connection pooling?
We are building a laptop application that will use SB to send messsages
to one SQL SVR 2005 instance. SQL 2005 Express will be installed on
each laptop and will be the "sender" to one SQL SVR instance, the "receipient"
It will be deployed to over 1500+ laptops. Each laptop will have a different
IP address.
Our SQLDBA wants to know if each of the laptops will use a different
connection when sending messages?
I answered "Yes", but another team member said "No".
What is the correct answer?
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Oct 23, 2006
helloi use Visual Web Developer and SQL server 2005 express , how can i enable service borker of my sql server ?thaks for any helpderin
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Jul 14, 2006
I have configured a non-SQL linked server (via an OLE DB provider) and I wish to insert data into it via Service Broker but I am getting the following error in the SQL Server log:
The activated proc [dbo].[sp_ mytableServiceProgram] running on queue TestDB.dbo.mytableQueue output the following: 'Cannot promote the transaction to a distributed transaction because there is an active save point in this transaction.'
As you see below, my strored proc. is not issuing any 'save trans' statements, so why is it not allowing me to wrap my code in a transaction? How else can I use a transaction (in order to not lose anything from the queue) and yet still be able to insert to the linked server?
CREATE PROC sp_mytableServiceProgram
AS
SET NOCOUNT ON;
DECLARE
@XML XML,
@MessageBody VARBINARY(MAX),
@MessageTypeName nvarchar(256),
@Dialog UNIQUEIDENTIFIER;
-- This procedure continues to process messages in the queue until the
-- queue is empty.
WHILE (1 = 1)
BEGIN
BEGIN TRANSACTION;
--BEGIN DISTRIBUTED TRANSACTION; --Tried this but didn't help.
-- Receive the next available message
WAITFOR (
RECEIVE TOP(1) -- just handle one message at a time
@MessageTypeName = message_type_name,
@MessageBody = message_body,
@Dialog = conversation_handle
FROM mytableQueue
), TIMEOUT 2000 ;
-- If RECEIVE did not return a message, roll back the transaction
-- and break out of the while loop, exiting the procedure.
IF (@@ROWCOUNT = 0)
BEGIN
ROLLBACK TRANSACTION;
BREAK;
END ;
SET @XML = CAST(@MessageBody AS XML);
INSERT INTO LINKEDSERVER.dbname.user.mytable
SELECT tbl.rows.value('@doc_no', 'INT') AS doc_no,
tbl.rows.value('@queryid', 'NVARCHAR(50)') AS queryid,
tbl.rows.value('@ar_num', 'NVARCHAR(50)') AS ar_num,
tbl.rows.value('@status', 'NVARCHAR(20)') AS status,
tbl.rows.value('@creationtime', 'DATETIME') AS creationtime,
tbl.rows.value('@note', 'NVARCHAR(250)') AS note,
tbl.rows.value('@posted', 'NCHAR(1)') AS posted,
tbl.rows.value('@kms', 'INT') AS kms,
tbl.rows.value('@schresid', 'NVARCHAR(50)') AS schresid,
tbl.rows.value('@resolution_code', 'NCHAR(8)') AS resolution_code,
tbl.rows.value('@page_count', 'INT') AS page_count,
tbl.rows.value('@new_serial_number', 'NVARCHAR(20)') AS new_serial_number,
tbl.rows.value('@taskresolution', 'NVARCHAR(250)') AS taskresolution
FROM @XML.nodes('/inserted') tbl(rows);
-- If the INSERT did not insert any rows, rollback.
IF @@ROWCOUNT = 0
BEGIN
ROLLBACK TRANSACTION;
BREAK;
END
COMMIT TRANSACTION;
END
GO
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Sep 7, 2006
I have an application that is reading a message from a Service Broker Queue. When I use integrated security with an NT account it works fine. When I use a SQL Server User through Management Studio I can select from the Queue however, when I use this same account through the web app with the SQL Server User, I cannot see the Queue. Is there a grant that I must do to this account to get it to see the Service Broker Objects?
Gary
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Apr 26, 2006
Hi,
I have installed sql server standard edition 2005.I want to enable service broker feature or services after intalling the sql server.Please let me known any tool or utiltiy to enable the feature
Alter datatabase set enable_broker is not working.
Its giving syntax error
Thanks
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May 2, 2006
I am writting a huge Service Broker Application. I notice that each message that is processed appears in the SQL Server Logs. Currently I am just testing with a single queue and tons of messages are showing up in the log. Is there a way that I can turn these informational messages off? I think in the end I may have something like 15 or 20 queues. These messages are very useful for debugging but I may not desire this extensive logging to be running all the time on all of my queues.
Gary
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Feb 3, 2015
I had to restore a database in one of the staging servers the other day. However, upon completion, I found out that the service broker queue in the database is not working anymore. The service broker queue error was similiar to this error:
The activated proc dbo.procedure_name running on queue database_name.dbo.queue_name output the following: '<error message>.'
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Feb 12, 2015
Let's say that I have a stored proc that is assigned to a service broker queue and is constantly running while it waits for messages in said queue. When a message comes in on the queue, the stored proc creates a table variable based off of the contents of the message and performs various operations with the data. Since the stored proc is constantly running, do the contents of this table variable ever truly get emptied? Should I be deleting the contents of the table variable at the end of the operation to ensure that stale data doesn't persist?
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Dec 4, 2007
I created the table dbo.customer from the orginal table sales.customer. dbo.customer works but sales.customer does not. WHY? We took the time to design our tables under different schemas to help control, organize and assign permissions.Private Function GetCustomers() As DataTable
Dim sqlconnection As New SqlConnection(WebConfigurationManager.ConnectionStrings("connectionstringAlliance").ConnectionString.ToString)WORKS:Dim command As New SqlCommand("SELECT CustomerID, CustomerType FROM dbo.Customer WHERE CustomerID=1234", sqlconnection)DOES NOT WORK:Dim command As New SqlCommand("SELECT CustomerID, CustomerType FROM Sales.Customer WHERE CustomerID=1234", sqlconnection)
Dim dependency As New SqlCacheDependency(command)
Dim dad As SqlDataAdapter = New SqlDataAdapter(command)
Dim customers As New DataTable
dad.Fill(customers)Cache.Insert("Customers", customers, dependency)
Return customersEnd Function Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.LoadDim customers As DataTable = CType(Cache.[Get]("Customers"), DataTable)
If customers Is Nothing Then
customers = GetCustomers()
Label1.Text = System.DateTime.Now.ToString()
End If
gridviewCustomer.DataSource = customers.DefaultView
gridviewCustomer.DataBind()
End Sub
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Mar 30, 2007
I am trying to send a message between to SQL Server 2005 instances on two different machines. I have checked all my routes and all my objects appear to be setup correctly. However, when running Profiler on the target machine, I receive the "This message has been dropped because the TO service could not be found. Service name: "[tcp://mydomain.com/TARGET/MyService]". Message origin: "Transport". This is my activated stored procedure that is sending the message to the target service. I am using certificate security. Any help appreciated....
CREATE PROCEDURE [usp_ProcessMessage]
AS
BEGIN
SET NOCOUNT ON;
DECLARE @conversation_handle uniqueidentifier
DECLARE @message_body AS VARBINARY(MAX)
WHILE (1=1)
BEGIN
BEGIN TRANSACTION;
WAITFOR(RECEIVE TOP (1)
@conversation_handle = conversation_handle,
@message_body = message_body
FROM [tcp://mydomain.com/INITIATE/MyQueue]
), TIMEOUT 1000;
IF (@@ROWCOUNT = 0)
BEGIN
COMMIT;
BREAK;
END
END CONVERSATION @conversation_handle
IF @message_body IS NOT NULL
BEGIN
BEGIN DIALOG CONVERSATION @conversation_handle
FROM SERVICE [tcp://mydomain.com/INITIATE/MyService]
TO SERVICE '[tcp://mydomain.com/TARGET/MyService]'
ON CONTRACT [tcp://mydomain.com/INITIATE/MyMessage/v1.0]
WITH ENCRYPTION = ON, LIFETIME = 600;
SEND ON CONVERSATION @conversation_handle
MESSAGE TYPE [tcp://mydomain.com/TARGET/VisitMessage]
(@message_body);
END
COMMIT;
END
END
GO
My endpoints are created like so:
CREATE ENDPOINT MyEndpoint
STATE = STARTED
AS TCP
(
LISTENER_PORT = 4022
)
FOR SERVICE_BROKER (AUTHENTICATION = CERTIFICATE MasterCertificate)
GO
GRANT CONNECT TO CertOwner
GRANT CONNECT ON ENDPOINT::MyEndpoint TO CertOwner
GO
And my routes like so:
GRANT SEND ON SERVICE::[tcp://mydomain.com/INITIATE/MyService] TO CertOwner
GO
CREATE REMOTE SERVICE BINDING [MyCertificateBinding]
TO SERVICE '[tcp://mydomain.com/TARGET/MyService]'
WITH USER = CertOwner,
ANONYMOUS=OFF
CREATE ROUTE [tcp://mydomain.com/INITIATE/MyRoute]
WITH SERVICE_NAME = '[tcp://mydomain.com/TARGET/MyService]',
BROKER_INSTANCE = N'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx',
ADDRESS = N'TCP://xxx.xx.xx.xx:4022'
GO
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Dec 27, 2005
Back in July I released the (then) latest version of SsbAdmin. For you who
don'r know what it is; it's a tool which allows you to graphically administer
SQL Server Service Broker.
I have now uploaded a new version which is compiled against the released
versions of SQL Server 2005 and .NET 2.0.
You can download it from here: [0].
After download, un-zip to some directory and read the README.doc file.
[0]: http://staff.develop.com/nielsb/code/ssbadmin.zip
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Jul 13, 2007
Hi,
I received an alert 'The SQL Server Service Broker or Database Mirroring transport is disabled or not configured'
How can I check the status of the two? and if they are disabled how do I enable them?
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Nov 9, 2007
We are looking for some guidance with an issue we have picked up with our implementation of Service Broker here on the ABSA Capital project and I am hoping you can help or point us in the direction of someone.
The architecture we have implemented for service broker is to make use of an Activation stored procedure on two queues (1 SP per queue) to process the messages received. What we have found is that the activation stored procedure runs on a background session and its CPU time and memory just grows to the point where it brought one of our UAT servers to a grinding halt.
Is there anyway we can reduce the memory consumption of the activation stored procedure or is this one of those things that still need to be ironed out in Service Broker?
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Sep 26, 2007
I am doing some research to see if the Service Broker technology would help my company with our Enterprise application. Here is our scenario: We have a 3 tier system. The first tier needs to contact the second tier asynchronously. Hence, using queues is a good option. However, the process that needs to happen on the second tier is mostly process intensive with little database updates. Is it still worth our time to use Service Broker?
I like the concept of Activation that Service Broker provides. But, from what I am reading most of the documentation describes activation as a way to call another stored proc. I definitely dont' want to do any process intensive work on the SQL server. So here comes my question...
How would I use a windows service to listen to the activation event from the Service Broker. I could have multiple windows services watching the same queue (scalable). Would I have to handle collisions myself? If so, I think I would rather keep it simple, and just use a simple table as my queue.
Thanks for your comments in advance...
Vijay.
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Apr 5, 2008
Hi to all, I want to study Sql server Service broker, have some questions1. What is the use of service broker ?2. Where this will use ? (With example)3. How to enable Service broker? Because i have sql server 2005 version but no folder like service broker.
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Aug 29, 2006
Im having a hard time understanding everything required to create a simple Service Broker example. Can someone please assist? Source code would be ideal, but if not "do this, do that" would even be helpful.
Thanks.
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Sep 8, 2006
I am trying to implement service broker. I send a message from my application code to the database to execute a specific stored procedure. How do i return the result set obtained by the execution of the stored procedure to the application.
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May 16, 2006
My service broker seems to be broken... The database was restored from another crashed server but i have tried the
ALTER AUTHORIZATION ON DATABASE::[SPYDERONTHEWEB] TO [SA];
The error i'm getting is
Service Broker needs to access the master key in the database 'SpyderOnTheWeb'. Error code 25. The master key has to exist and th service master key encryption is required.
Error: 28054, Severity 11, State: 1.
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Sep 26, 2006
Hi
It will be great to have an update on MS plans to solve the problem of using
Service Broker for remote users who sit behind the NAT.
Any news will be appreciated.
Leonid.
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Sep 11, 2006
Hello , I am trying to Implement distribution of the Stock Quotes over the LAN(only within the Network) and showing the live changing stock Quotes on the front end (in datagrid) installed at each clients desktop.I am receiving the Stock prices over the TCP / IP from the Stock Exchange. I am recieving atleast 10-15 messages per second over the TCP / IP from the Stock Exchange. Now i need to distribute this feed to Each connected client.
I tried doing it from TCP / IP , but in vein. Can we install the SQL 2005 Database Client Version on every client and use Service broker instaed of Live TCP / IP connections programmatically?
Ideally Can i dump the meesages from Stock Exchange in to each connected client's database locally and each front end application will keep a record of all the incomming messages.i.e Front end have a notification event , it will referesh the Datagrid in Front end accordingly...
ALL my front end application are made in dot net
Pls suggest if this above workflow will help me
Yugant
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Jan 8, 2008
Hi,
Is it possible to develop Service Broker in .Net 1.1 (VS 2003)? Currently I have a project developed in .Net 1.1 and I want to add a new method utilize the message queue concept (instead of using MSMQ, using Service Broker SQL 2005), although my DB is SQL server 2005.
Thanks,
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Jul 3, 2007
Hi all
if any one have any white paper or artical cover this issue kindly i need it
thanks , regards
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May 16, 2007
Hi,
I am looking at the Service Broker as a way to notify multiple clients that there has been data changed on a table in the shared database. These clients may or may not be online. When there is a change, the notification should fire off a query to refresh the clients local cache. Is this a situation where Service Broker would help me? Can multiple clients recieve the notification at different times ( some recieve while online, some recieve when they come back online)? Any help on this would be appreciated. It seems from what I read that the messages are pulled off the queue when a notification has taken place. Is this correct? If so, can I set it to behave differently?
Thanks,
-paul
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Sep 15, 2005
Let's assume the situation: we have Initiator and Target. Target is behind ISP's NAT and can't be published outside. So, when Initiator sends a message to Target, Target will not be able to establish a backward connection and will not send an acknowledge. Initiator will retry and retry...
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Apr 26, 2008
I have tried the following, each runs successfully with no error, but nothing is in the queues, what can be the issue?
CREATE MESSAGE TYPE SentMsgType
VALIDATION = WELL_FORMED_XML;
CREATE CONTRACT MQContract
(SentMsgType SENT BY ANY );
CREATE QUEUE SentQueue
WITH
STATUS=ON, RETENTION=OFF;
CREATE QUEUE ReceivedQueue
WITH
STATUS=ON, RETENTION=OFF;
CREATE SERVICE SentService ON QUEUE SentQueue
(MQContract);
CREATE SERVICE ReceivedService ON QUEUE ReceivedQueue
(MQContract);
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TRIGGER [dbo].[insertTrigger]
ON [dbo].[tblBBB] FOR INSERT AS
BEGIN
SET NOCOUNT ON;
DECLARE @handle uniqueidentifier
DECLARE @msgBody nvarchar(500)
select @msgBody = someString from inserted
BEGIN DIALOG CONVERSATION @handle
FROM SERVICE SentService
TO SERVICE 'ReceivedService', 'CURRENT DATABASE'
ON CONTRACT MQContract;
--Sends a message
SEND ON CONVERSATION @handle
MESSAGE TYPE SentMsgType
('<message>' + @msgBody + '</message>')
END CONVERSATION @handle WITH CLEANUP;
END
SELECT * FROM SentQueue
SELECT * FROM ReceivedQueue;
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Oct 16, 2006
How to create service broker and whic version is supported to create serveice broker.
can you plz exlain to create servece broker from the scratch
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Feb 16, 2007
Hi everyone,
Can anyone let meknow how do i enable a service broker. I am trying to enable a service broker for an issuetracker application to get change of events in my database. When ever i try enabling it using the ALTER DATABASE [ databse] set Enable_Broker. it takes abt more that 2 hrs or more but doesnt show as enabled.
Thanks in Advance,
Pawan Venugopal
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Mar 22, 2007
So SQLDependencies failed to do what I wanted them to do for my Cache Invalidating, so i'm going to humor another possibility for a half day - Triggers on my database table that communicate messages to my C# inside my ASP.NET App. Any advice on how to tap into a message queue with C#? I'm thinking that my messages could be 1 of about 100 different strings as far as what occurred on the Database Tables
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