SQL Server 2008 :: Service Broker And Temp Tables
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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Feb 8, 2008
This is killing me...and not slowly.
I have a stored procedure (a) which calls another stored procedure (b).
Stored procedure (b) is a C# stored procedure which simply writes out to a file data in XML format. Internally, it calls...select fld1, fld2, fld3, fld4, fld5from #tmptable for xml auto, elements
If I call stored procedure (a) from Query Analyser / SQL Management Studio everything works fine. Perfect.
But....we need this all to run asynchronously. So we used the Service Broker, configured the queues and messages and off we went. All worked as planned except our XML files were empty.
Further investigation showed that if we call select fld1, fld2, fld3, fld4, fld5from #tmptable
- without the 'xml' bits, we got a resultset back. But if we call it with the for xml auto, elements, the reader was empty. No errors are visible in the profiler, but the XmlReader refuses to read.
The binary / extended stored procedure is the same pysical binary that is called from Query analyser that works, but via the Service Broker refuses to do anything XML based. Outputting the data as normal text is cool, but not what we want.
----------------- UPDATE --------------
I changed the code so the CLR Stored proc was fired as a trigger on an update to a table. If I update the table in Query analyser, the trigger fires, the CLR Stored proc is called, the XML is generated.
If I update the table as part of my message handling in the Service Broker queue, the trigger is fired, the CLR Stored proc is called, the XML is generated EMPTY!!! The other TSQL statements work fine, but selecting for xml simply will not work for a procedure called, either implicitly or explicitly from the service broker.
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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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Apr 30, 2015
I've recently started a new position and our production box. Contains a procedure that uses 30 + temp tables. I'm currently not in a position to change this as it's production and I would have to be granted a window to re-design.
However the tempDb is showing some strange activity.
If a table is created #CarrierService (CarrierServiceID,DeliveryZoneID,CollectionZoneID) for example
Once the procedure is called It will appear in the tempDB with the session info appended as expected
#CarrierService________________________________________________________2C78E45A
However once the session has ended the above table will get dropped and a new one created
#2C78E45A, I now have 7000 of these different Tables in the TempDB
When I Interrogate this using
SELECT o.name, o.create_date,o.modify_date , c.Name,C.Column_Id
FROM tempdb.sys.Objects o
Inner join tempdb.Sys.Columns c
ON o.object_id =c.Object_ID
WHERE o.type ='U'
I get the Following results
name create_date modify_date object_id name
#2C78E45A26/04/2015 18:0930/04/2015 14:55746120282CarrierServiceId
#2C78E45A26/04/2015 18:0930/04/2015 14:55746120282CollectionZoneId
#2C78E45A26/04/2015 18:0930/04/2015 14:55746120282DeliveryZoneId
Notice How It's getting Modified today.
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May 25, 2015
For finding size values of temp database:
select * from sys.master_files -
size column value here is 1024 for .mdf,size here for .ldf is 64
select * from tempdb.sys.database_files -
size column value here is 3576 for .mdf,size here for .ldf is 224
Why is there a difference and not the same. size columns in the above 2 tables for temp db's do they represent different values ?
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May 25, 2015
1) "Deferred compile" recompile event occurs because of deferred name resolution. In other words, an object referred to in the statement does not exist at compile time. Later, when the object does exist, it requires a recompile of the statement so that it can create an optimal execution plan. One example of when a deferred compile will occur is if a temporary table is used in a batch and does not exist when the first statements in the batch are compiled.
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Jul 14, 2015
here's an example of what I am trying to do.
--Exec Database.Employees
--Use Database
--Go
--Create PROCEDURE AEM.TempTable
--AS
--BEGIN
--Select * into #emptemp From Database.Employees
--End
--Select * From #emptemp
Is something like this possible? I can get the EXEC to run the "Select * into #emptemp From Database.Employees" statement, but when I try to use the temp table it doesnt see it.
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Mar 5, 2015
do you have a general rule of thumb for breaking a complex query into temp tables? For someone who is not a sql specialist, a query with more than a few table joins can be complex. So a query with 10+ table joins can be overwhelming for someone who is not a sql specialist.
One strategy is to break a problem into pieces so to speak by grouping together closely related tables into temp tables and then joining those temp tables together. This simplifies complex SQL and although not as performant as one big query it's much easier to understand. So do you have a general rule of thumb as far as a threshold for the number of joins you include in a query before you break the query into temp tables?
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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 25, 2006
Hi,
We have a customer whos database just grows and grows. Not the customers own tables, but the:
sys.sysconvgroup
sys.sysdesend
sys.sysdercv
And these tables are linked to the Service Broker, and according to http://msdn2.microsoft.com/en-us/library/ms179503.aspx these tables exists in every database and are used by the Service Broker.
Now to my questions =)
HOW do I delete rows from these tables? How come these tables hust grows and grows, could it be any setting in the SQL 2005 Server or is it the customer who has programmed his application wrong?
Please respond as soon as possible.
Best regards
.Henrik
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Aug 29, 2006
I am trying to move a flat file into a temporary table but the pre-execute phase looks for the table and fails the package. Is there away around this? I have set the connection RetainSameConnection to true but that doesn't appear to help in the dataflow.
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Aug 29, 2006
If you create a #temp table on stored procedure #1
and then call another stored procedure #2 from #1; if stored procedure #2 has an error in it, the #temp table will not release even though stored procedure #1 has a drop table statement in it.
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Oct 31, 2007
Hello everyeone,
I'm very new to this reporting services and am trying to see whether this service can be utilized in our company's sales system.
I've searched quite a few documents about Reporting Service tutorials and it only shows how to make very basic reports, using simple query and one dataset.
Is there any document or manual that shows how to generate a report using a stored procedure or complex queries with temp tables.
If above is not possible, ca I join multiple datasets then?
Please help~...
Thank you in advance!!
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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 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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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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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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Nov 17, 2004
Hi all,
Looking at BOL for temp tables help, I discover that a local temp table (I want to only have life within my stored proc) SHOULD be visible to all (child) stored procs called by the papa stored proc.
However, the following code works just peachy when I use a GLOBAL temp table (i.e., ##MyTempTbl) but fails when I use a local temp table (i.e., #MyTempTable). Through trial and error, and careful weeding efforts, I know that the error I get on the local version is coming from the xp_sendmail call. The error I get is: ODBC error 208 (42S02) Invalid object name '#MyTempTbl'.
Here is the code that works:SET NOCOUNT ON
CREATE TABLE ##MyTempTbl (SeqNo int identity, MyWords varchar(1000))
INSERT ##MyTempTbl values ('Put your long message here.')
INSERT ##MyTempTbl values ('Put your second long message here.')
INSERT ##MyTempTbl values ('put your really, really LONG message (yeah, every guy says his message is the longest...whatever!')
DECLARE @cmd varchar(256)
DECLARE @LargestEventSize int
DECLARE @Width int, @Msg varchar(128)
SELECT @LargestEventSize = Max(Len(MyWords))
FROM ##MyTempTbl
SET @cmd = 'SELECT Cast(MyWords AS varchar(' +
CONVERT(varchar(5), @LargestEventSize) +
')) FROM ##MyTempTbl order by SeqNo'
SET @Width = @LargestEventSize + 1
SET @Msg = 'Here is the junk you asked about' + CHAR(13) + '----------------------------'
EXECUTE Master.dbo.xp_sendmail
'YoMama@WhoKnows.com',
@query = @cmd,
@no_header= 'TRUE',
@width = @Width,
@dbuse = 'MyDB',
@subject='none of your darn business',
@message= @Msg
DROP TABLE ##MyTempTbl
The only thing I change to make it fail is the table name, change it from ##MyTempTbl to #MyTempTbl, and it dashes the email hopes of the stored procedure upon the jagged rocks of electronic despair.
Any insight anyone? Or is BOL just full of...well..."stuff"?
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Mar 25, 2015
I can create a temp table like this, and immediately read the data:
declare @NAICSGroups table (NAICS2DigitCode int, NAICSShortTitle varchar(35));
insert into @NAICSGroups (NAICS2DigitCode, NAICSShortTitle)
values
(11,'Agriculture'),
(21,'Mining'),
(22,'Utilities'),
[Code] .....
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Apr 6, 2015
I have a dynamic sql which uses Pivot and returns "technically" variable no. of columns.
Is there a way to store the dynamic sql's output in to a temp table? I don't want to create a temp table with the structure of the output and limit no. of columns hence changing the SP every time I get new Pivot column!!
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Jul 28, 2015
what are some common techniques for ensuring an isolated temp table scope? For example, if 2 different sprocs happen to crud a temp table with the same name? I'm guessing that big SQL shops establish a standard for this early on to avoid conflicts between sprocs.
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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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