Sequential convoy issue

I have an issue with an orchestration.
I am using WCF-SQL receive adapter to poll some records. I splitted the message based on Richard Seroter’s blog (http://seroter.wordpress.com/2010/04/08/debatching-inbound-messages-from-biztalk-wcf-sql-adapter/).
Then I am trying to group the messages based on some field using sequential convoy pattern. I created a correlation set and initialized the correlation set on the first receive shape and then followed the correlation set in the second receive shape which is
in branch of a listen shape. I can see the promoted property and the value of the promoted property is exactly same for some messages.
So they are supposed to go to same orchestration. The problem is that the incoming splitted messages still activated new orchestration instances. The convoy is not working.
Any suggestions about what could be wrong?
Thanks,
David
David

It is possible that the messages are getting debatched at a speed which results in multiple messages with the same correlation pattern getting instantiated at the same time. So when BizTalk Checks for an existing subscription (for the convoy) it does not
find one and creates a new instance of the convoy.
To test this out, I'd suggest you first put in two distinct records. This should result in four distinct instances. Then you again insert records matching to two of previous and then a new one. You should see your convoy working and a new instance being
created of the new instance. If you do observe this pattern then you would be sure that the timing the messages are hitting the messagebox is causing the confusion.
What you might have to do is first implement a singleton, which will force BizTalk to process the messages sequentially and then pass it through to a convoy.
Regards.

Similar Messages

Sequential convoy scinario ,example and steps

Hi all,
I Am trying to implement sequential convoy for my knowledge.
1-in which scenario I will use sequential convoy please give me an example(as i know that if we want to execute a process in predefined steps then we will follow sequential convoy).
2-how we will implement this in our application ? what are the steps..
Below are the steps which I am following for creating my test application
a) created 4 schema
     1-firstname schema (id,fname)
     2-lastname schema (id,lname)
     3-Property schema(id) for corelation
     4-output schema (id,fullname)
b)Orchestaion
i have created 3 message.
msgFname,msgLname,msgFullname.
in designing of orchestation
first draged a recive shape with activate ="true" and message type is "msgFname" initialize corelation here
draged a recive shape below the first recive shape with activate ="false" and message type is "msgLname" will following corelation here
will do mapping with final output msg (msgfullname).and will send final output.
while i m deploying application I m getting error
"in a sequential convoy the ports must be identical"
Please help me to overcome from this issue.
Thanks
Manoj Ruwali

Hi
Please check below few links about sequential convoy, I am sure they will be useful.
http://abdulrafaysbiztalk.wordpress.com/2009/11/07/enterprise-integration-pattern-part-5-aggregator-sequential-convoy/
http://msdn.microsoft.com/en-us/library/aa561843.aspx
http://msdn.microsoft.com/en-us/library/ms942189(v=bts.10).aspx
HTH,
Naushad Alam
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Mark As Answer
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My new TechNet Wiki
"BizTalk Server: Performance Tuning & Optimization"

Problem when handling multiple messages using sequential convoy

Hi Guys,
We receive two files from FTP server. One is Order file and other one is notes file which is optional one. If the note flag in order file is 1 then we should process notes file as well. Here we implemented sequential convoy and it was working fine when we
receive order file first and then notes file. it is throwing error when we receive notes file first as we set initialize correlation for Order file. Please share your ideas what to do when we receive notes file first than order file?. Thanks!!

Hi,
i added debug points and ran it. i dropped one order file and one note file but it is initializing active instance for both order and note files. Here is the order of logs.
Initialized Order
Initialized Note
followed Note

Single orchestration instance and Sequential convoy

Hi
I had read some Biztalk documents, I saw that talk about single orchestration instance and sequential convoy. But
I'm not sure with what situation use them?
1. What are scenarios use single orchestration?
2. What are scenarios use a sequential convoy?
Thanks in advance!

A single orchestration or a singleton provides you with a mechanism to control the throughput of message through the system. The behaviour of BizTalk is to trigger a thread for every message instance and when handling Message Batches, this is often not a
good thing as after debatching you land up with lots of messages, each of which trigger off an instance of the subscription.
A convoy is a more generalized pattern. If a convoy is deployed for the same message, it becomes a singleton. A convoy can be used to sequentially process different (but interlinked) messages. To take a very loose example, the entire process from order placement
to goods shipment to invoicing to payment can be implemented as a convoy with each different type of message being handled by one instance and being received from a single port. A convoy can also be used to implement the gather portion of the scatter-gather
pattern which is usefull when you want to aggregate the results of a batched processing, etc.
Regards.

Sequential Convoy and Long running transaction: Messages still referenced

Hi everyone<o:p></o:p>
Being a BizTalk developer since 2006, this thing still stumps me.<o:p></o:p>
I have a sequential convoy singleton orchestration that debatches messages using a rcvPipeline. The orchestration is needed in a FIFO scenario. In order to execute a rcvPipeline
within an orchestration I need to encapsulate it within an atomic transaction scope. <o:p></o:p>
In order to have an atomic scope the orchestration needs to be long running. I have also encapsulated the atomic transaction within a scope (using long running transactions) to have
exception handling.
<o:p></o:p>
Everything works fine except for one major detail:
When the orchestration executes the messages are still in the messagebox. I can even click on the orchestration instance in the MGMT console and look at the message! Tracking is disabled for the receive port as well as for the orchestration. Still, the messages
does not get cleaned up.
<o:p></o:p>
I have set my DTA-purge to 1 hour and it works fine, but the messages are still in the orchestration.<o:p></o:p>
My guess is that the long running transactions does not complete (although it looks like they should) and since the transaction is not completed the messages are not removed from
the message box.
So, to summarize: Is it possible to combine long running transactions and a singleton orchestration?
//Mikael Sand (MCTS, ICC 2011) -
Blog Logica Sweden

So after a day of looking for the solution it is quite clear that you are right in that the atomic transaction does not commit. I added a compensation block with trace info and it is never hit.
I also experimented with Isolation level on the atomic transaction and that did nothing.
Lastly I also made the sendport direct bound and also tried "specify later binding" to a physical port.
The messages are still being referenced by the orchestration! What can I do to make the atomic transation commit?
//Mikael Sand (MCTS, ICC 2011) -
Blog Logica Sweden

Edi sequential convoy aggregation missing first message in output

Hi I am getting EDI batch in inbound and I need to create equivalent xml batch in output, so I am using aggregate pattern with convoy. When I run it I always see one message missing in output. Say if I run file of 3 transactions I will get only 2 messages
in output first message will not be there. If I run 2 transaction file , again I will missing fist one.Can anybody suggest what could be problem

Crossover with this thread:
http://social.msdn.microsoft.com/Forums/en-US/237fa016-80b4-4663-91e2-1dbe973eb9c9/getting-count-of-st-segment-in-edi?forum=biztalkgeneral
You need to move your app logic outside and before the Listen Shape.
The Listen Shape must be the last thing in the Loop where you either Receive another Message or timeout. If you Receive another Message, you Loop back and run your logic. If the Delay fires, exit the Loop.

LR Sequential Numbering Issues

When is LR going to have a sequential numbering system that remembers the last number and restarts from that last number. When will LR copy your images through the ingest process in two different locations, identical to each other. LR should review the way Photo Mechanic does both of these chores and COPY them. Lets hope it happens sooner rather than later. Please Adobe?

Jim-
This link may be a better shot:
http://www.adobeforums.com/webx/.3bc34322/ is for feature requests.

Multiple Orchestration instances getting generated

I had a orchestration which query's for a particular WCF Service, If this service is live, then no issue, let's say a scenario where the
service is down, then control will goto my exception block, inside exception block i had a suspended shape, just to suspend the instance, so that when the service the up, the Biz Admin will again resume the service.
The issue we are facing is when service is down, Multiple Orchestration instances keep on generating, to talk to the service we are using a
dynamic port, we are setting the properties of the port inside expression shape "TransportType" "Address".
any pointers on resolving the issue(we just want one suspended orchestration instance) not multiple instances being generated,

It a normal behavior and happens when your receive location is being triggered by messages and your service is down .The service will give a exception and you are getting suspended messages inside your BizTalk.
Better way is to have a sequential convoy working for your Scenario having delay shape .You can also have a loop shape which will be used to auto trigger the service after the delay time specified in delay shape.
Another approach is to use ping pong tool to validate the web service . What you need to do is to add the ping pong assembly in your Orchestration and send request to web service.
https://gallery.technet.microsoft.com/WebService-PingPong-f734800e
Thanks
Abhishek

Scheduled pickup and email of File from folder location

Hi,
I have a scenario where we need to pick up a file from a folder location on a particular date of a month and send it via email to an email id.
For this, we have planned a design where I have a SQL receive adapter which will poll a table in SQL and return a boolean value indicating that the file is
to be sent on the particular date. This instantiates an orchestration if the boolean returned is true.
once the orchestration instance is created, in the next steps, I am trying to receive the file from a folder location. I am getting a build error here. Mentioning "you must specify at least one already-initialized correlation set for a non-activation receive
that is on a non-selfcorrelating port".
Can you please suggest how I can correlate on these locations.
Regards,
Ujjwal
-Ujjwal

Ok got,
If my understanding is correct, you have an orchestration with two receive shapes. First receive shape is for
SQL to receive the trigger message and in second Receive shape you expect to receive the message from Folder (file location)
since you have two receive location in your Orchestration you have a convoy and you have set correlation for your Receive shapes. Initialize the correlation set
in first Receive shape and follow the correlation set in another Receive shape.
But for your requirement, even when the flow of your Orchestration moves to the second Receive shape (which is configured to
file location) it not going to pull/receive the file into your Orchestration as you expect.
As said, read the
schedule task adapter and use to trigger the file receive process on particular date of a month and have send
port with filter for the Receive port name (which has Receive location with schedule task adapter) and configure this send port to send email.
Read more about correlation here:
Using Correlations in Orchestrations
Walkthrough: Correlations in BizTalk Orchestration
Read more about convoy here.
Working with Convoy Scenarios
Sequential Convoys
Read more about
Schedule Task Adapter:
https://biztalkscheduledtask.codeplex.com/
https://connectedenterprise.wordpress.com/2011/09/26/the-very-useful-biztalk-scheduled-task-adapter/
If this answers your question please mark it accordingly. If this post is helpful, please vote as helpful by clicking the upward arrow mark next to my reply.

How to handle rejected Orders in BTS

Hi - I have a requirement where for instance there are 1000 Orders received, and out of them say 900 are good and 100 are wrong, I need to Process those 900 Orders and remaining 100 wrong Orders needs to be sent back the the client.
How can this be achieved through BizTalk, can anyone throw some ideas please ?
MBH

There will be lots of permutations to this based on specific technical aspects and varying business requirements but here's some general guidence:
Process the inbound orders. Apply Schema Validation, BRE Policies, an internal LOB to validate the Order.
'Wrong' Orders can be flagged with a custom Context Property that is Promoted.
Have an Aggregator Orchestration that subscribes to and Correlates on the flag property. It would be a Sequential Convoy. It will collect the Orders flagged as wrong.
After some amount of time or number of rejected Orders, the Aggregator will flush the collected Messages. Then you can transform to .csv or any other format and return to the client.

BizTalk Correlation in Orchestrations

Hello All,
I have a scenario in which in am calling an SP and it gives me a response. Now lets call the messagetype of Request Msg as Arequest and messagetype of Response Msg as Aresponse. There is a node in Arequest called ID. I am in innitialising a correlation in
Orchestration for that ID while sending the data to SP. when I recieve the response from SP I check if it is a 1 or a 0 if it is a 0 I have a receive shape with a following correlation of ID and a different messagetype say Debatch. If I get a 1 from SP I call
a view which will return a response with N number of ID. now I have to debatch for each ID to a messagetype debatch and then publish to the messagebox so that it can be subscribed by the dehydrated orchestrations (the receive shape that I was using for dehydration
earlier!) I am able to do all this but after debatching the orchestration I am getting a routing failure error in BizTalk. When I check the subscriptions for the suspended orchestaration the subscriptions are 1. for the the ID and 2 for the messagetype as
the root node of the debatched message.
please help

The send would been the result of some receive? you need to initialize on that receive and follow it up on the subsequent receive. That is how a "convoy" is created. A "convoy" is what will help you create the "order" that you
want. A "convoy" can be sequential - same receive location or parallel - different receive locations and/or different message types. Refer
https://msdn.microsoft.com/en-us/library/aa561967.aspx for Implementation Design Patterns in BizTalk,
https://msdn.microsoft.com/en-us/library/aa561843.aspx for Sequential Convoys and
https://msdn.microsoft.com/en-us/library/aa546782.aspx for Parallel Convoys.
You correlate between a send (initialize) and receive (follow) when you want to correlate a request to a response over an ASYNC transport such as Queues.
Regards.

A simple, parallel wrapper around BSD sockets, libevent, and pthreads

I've found myself writing a few small servers in C over the years. Dealing with the sockets API has never been fun for me, so I decided to sit down and consolidate the work I've done into an easy-to-use library.
The result was evt-server: https://github.com/vedantk/evt-server
It uses libevent to watch for incoming connections. You can choose how many threads you want to use to process accepted connections (or you can do things sequentially -- no issue). Here's an example usage of the library: https://github.com/vedantk/evt-server/b … evt_test.c
The design of the server was inspired by memcached (see threads.txt in their src/doc/).

You are correct that userspace code shouldn't be causing kernel panics. At the very least, you should submit a bug report on that. Also, for something this specific, you would probably have better luck on the Apple Mailing lists (http://lists.apple.com) and/or the paid Mac Developer forums.

Listen and Delay Shape Error

Hello Everone,
I am using Listen and Delay shape, On left side of Listen shape Receive shape which receives msg on correlation set from direct binding to msgbox and on right side Delay shape is used to wait for one day , But when i receive the msg and going
to decide shape then if the condition is failed of decide it will not go to again listen shape and wait for msg.
Even Zombies occured..
Thanks and Regards,
Mangla

Hi,
Use loop shape and put the listen shape inside the loop shape. Use any condition that suits your business requirement in the loop shape. Follow below link for any help in using sequential convoy :
http://andreikos.wordpress.com/2013/07/05/sequential-convoy-and-throwing-exceptions/
Please indicate "Mark as Answer" or "Mark as Helpful" if this post has answered the question
Regards,
Rahul Madaan
biztalkvillage.blogspot.com

Abnormal behavior of Map inside orchestration

Hi Guys,
I have a sequential convoy orchestration where each XML message gets transformed to 837P.
In map I am using StringParam.Replace("-","").PadRight(9,'0') function inside scripting functoid to remove dashes from ZipCode.
The solution was working before I did some changes in the map (did not touch this part). Now my problem is that I get dash removed from the only first XML messages, all other subsequent messages' ZipCode gets mapped as is with dashes.
Can someone point me in the direction why my map is behaving abnormally?
Thanks,
Dhiraj Bhavsar

Hi Guys,
I have a sequential convoy orchestration where each XML message gets transformed to 837P.
In map I am using StringParam.Replace("-","").PadRight(9,'0') function inside scripting functoid to remove dashes from ZipCode.
The solution was working before I did some changes in the map (did not touch this part). Now my problem is that I get dash removed from the only first XML messages, all other subsequent messages' ZipCode gets mapped as is with dashes.
Can someone point me in the direction why my map is behaving abnormally?
Thanks,
Dhiraj Bhavsar
To me it sounds like a loop problem, If this is applied on some segment is occurs multiple times. if you don't loop over that, it will only map first occurence of segment. If possible please post a snapshot of your map (relevant portion only)

Receive Location - correlation

Experts,
i have one receive location say c:\document\Input\
in Input folder i am having files names: ABC.xml and XYZ.txt
in my orchestration i want to pickup xml file first and then all other .txt files and process it.
how can i achive this.
note: i am getting .txt file before .xml file.
Thanks in adv.
2Venture2

This is sequential convoy/Singleton process. Here ABC.xml and XYZ.txt have predefined order. Your orchestration instance should start when the ABC.xml arrive and
all the files of XYZ.txt (it should be *.txt is in it?, you can have multiple file with same name
J) would be processed by the same instance of Orchestration which was triggered by the arrival/presence of ABC.xml
file.
Orchestration would be bound to the same Receive port but with different receive locations. One Receive Location-for ABC.xml
and another for XYZ.txt
Implementing Singleton pattern with BizTalk Orchestrations
If this answers your question please mark it accordingly. If this post is helpful, please vote as helpful by clicking the upward arrow mark next to my reply.

Sequential convoy issue

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