Synch/Asynch Bridge

Hi all,
Can anyone tell me where exactly Synch/Asynch Bridge is used
Thanx,
krishna

Hi,
Sync/async communication enables a synchronous sender system to communicate with a receiver system that cannot process synchronous messages
Refer this blog
/people/ravikumar.allampallam/blog/2005/02/17/bridging-the-sync-async-bridge-with-fork-xi
/people/sriram.vasudevan3/blog/2005/01/11/demonstrating-use-of-synchronous-asynchronous-bridge-to-integrate-synchronous-and-asynchronous-systems-using-ccbpm-in-sap-xi
There is an example of the Sync/Async Bridge in th SWCV: SAP BASIS.
Namespace: http://sap.com/xi/XI/System/Patterns
The Integration Server receives synchronous messages from a sender and send them to a receiver as asynchronous messages. Conversely, it can send the asynchronous response from the receiver back to the sender as a synchronous response.
As soon as a synchronous message is received from the sender system the process uses a special receive step to open the sync/async bridge, sends the received message to the receiver system asynchronously, and waits for the asynchronous response to arrive from the receiver.
The BPE receives the asynchronous response from the receiver, correlates it with the corresponding query, and activates the waiting process, which then sends the response back to the sender synchronously.
This blog also should give you some idea...
https://www.sdn.sap.com/sdn/weblogs.sdn?blog=/pub/wlg/1403 [original link is broken] [original link is broken] [original link is broken] [original link is broken]
Also go through these links:
http://help.sap.com/saphelp_nw04/helpdata/en/83/d2a84028c9e469e10000000a1550b0/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/c4/dc06418752ef6fe10000000a1550b0/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/f9/66bf40ad090366e10000000a1550b0/RN_XI_DE_neu.pdf
example of the Sync/Async Bridge in th SWCV: SAP BASIS.
Namespace: http://sap.com/xi/XI/System/Patterns
regards
Message was edited by:
Vijaya Lakshmi MV

Similar Messages

Do I need to do a BPM / Synch-Asynch bridge ?

SDNers,
I have a scenario where a synchronous SOAP HTTP message will come in with data. Following steps are needed.
1) Call a stored procedure to authenticate on a DB2 database. Possible JDBC adapter.
1a) If authentication fails need to respond with error code in the SOAP-MSG and end.
2) Call another stored procedure to post the data to temporary table and get back a unique ID.
3) Return the response and unique ID to the SOAP-MSG.
Can you please let me know -
a) If I will need to create a BPM for this scenario. If not how ?
b) If BPM is needed - will I need a Synch-Asynch bridge although I have all synchronous communication throughout the process. All the stored procedures to DB2 database are intended to be synchronous JDBC receivers.
Thanks a lot in advance,
Charu

Thanks Sandro, Sudheer, Shweta and Venkat for your inputs.
It certainly looks like there is no way other than BPM even though I have synchronous scenarios - espacially because of the authentication step.
In case some of you are wondering why is not the authentication step and the subsequent step merged -The authentication are maintained in a separate system and hence a separate call is needed.
Venkat - I will check out on the Synch/Asynch bridge.
All - you have more inputs then please share your views.

Http_synch-- file using synch/asynch bridge

I am trying to do the following scenario with bpm ( synch/asynch bridge)
Scenario:
1. Http client calls BPM synchronously (open the S/A bridge).
2. BPM sends the received message to file adapter.
3. Another process reads the files and produces an output file (or I can do this manually).
4. The output file is sent back to BPM.
5. BPM returns the output message back to http synch (closes S/A bridge)
Integration Process Design :
1. Receive Synch (open the S/A bridge)
2. Send Asynch
3. Receive Asynch
4. Send Synch (close the S/A bridge)
When I call the BPM from the http client (QOS is BE or EO) , BPM receives the message and writes the file (so step1 and step 2 are okay). Then http client comes back with no response. That means BPM is not waiting for a message at step 3.
My understanding is BPM should wait on a receive step!
Even if I introduce a wait step after step 2, it doesn't help.
Why does the http client return before the s/a bridge is closed? Am I missing anything?
Please help.
Thanks

Hi,
>1. Receive Synch (open the S/A bridge)
This will again be a receive step with mode as opens S?A bridge.
>Send Synch (close the S/A bridge)
This is a Send Step with mode CLOSES S/A BRIDGE it will not be a Synch step.

My understanding is BPM should wait on a receive step!
it should. Make sure that the file adapter is active. And see if the file has been picked up. Did you check the flow of the message in the BPE? Did the receive step get executed? I think it would have and the problem can be in the mapping.
Just take a look at the Synch - Asynch bridge example in this link,
http://help.sap.com/saphelp_nw04/helpdata/en/83/d2a84028c9e469e10000000a1550b0/content.htm
Regards,
Bhavesh

Synch/Asynch Bridge TimeOut

Hi,
I am sending data to R/3 system through XI and waiting for response. If the R/3 takes half an hour to respond will my Synch/Asynch bridge will be still waiting for the response or will it die because of TIME_OUT.
Can anyone let me know.
Regards,
Amar Nemalikanti

Hi,
There is a Time Out for the Sync/Async Communication.
The settings can be done SXMB_ADM -> Integration Engine Config -> Change Specific Config -> Add a new entry
Check the Category SA_COMM, see the help for its parameters.
By default the time out setting is 60 seconds and the maximum allowed is 1000 seconds.
Thanks & Regards,
Renjith.

Doubt on Sync-asynch Bridge

hi all,
I was trying to understand the sync-asynch bridge concept and from what all i have read i have come to know that there is a sync-asynch and also asynch-sync bridge.This is used in a scenario say file-rfc-file.But i have done the same scenario without the bridge.I am still not clear where this bridge will fit into.
Can anybody please explain me with suitable examples..
thanks,
Nisheeta

Hi,
File-RFC-file is Async-sync communication. There is nothink like async-sync bridge in BPM. Because for this, 3 steps are needed
1. Receive - async
2. send - sync
3. send - async
But for Sync-async scenario, a Sync-async bridge should opened using receive step.
Example : Http request - File && File - Http response
Steps:
1. Receive - open sync-async bridge --> To receive Http request
2. Send - async --> To send message to File adapter.
3. Receive - async --> To receive message from File adapter
4. Send - close sync-async bridge --> To send Http response
Example : http://help.sap.com/saphelp_nw04/helpdata/en/83/d2a84028c9e469e10000000a1550b0/content.htm
Hope this clears your doubt.
Regards,
Uma

Synch-asynch scenario without bpm's?

Synch-asynch scenario without bpmu2019s can any one help me how to configure this scenario without bpms?

hi ferocious,
That is possible with standard functions and standard module beans.
Possiable1:
From pi 7.1 v , sap provided standard functions like RFC and jdbc of the conversion function group.
Possiable2:
sap provided Standard module beans those are RequestResopnceBean and OnewayResponceBean.
thanks,
bhavanisankar.

To create an asynch - synch - asynch flow with XI, without BPM

I would like to create an asynch -> synch -> asynch flow with XI,
without BPM.
The solution with RequestResponseBean and ResponseOnewayBean modules in
the File sender communication channel works fine.
But now I would ask you how can I do if my sender is R/3, with IDocs?
Because we cannot use modules in the IDoc sender communication channel,
and I don't want to use BPM.
Could you help me?
Thanks in advance,
Ram.

/people/jin.shin/blog/2006/02/07/multi-mapping-without-bpm--yes-it146s-possible
Refer to this blog. You may find a way out.
Alternatively, I would rather know the reason behind you not using BPM.Coz its the best way to acheive the desired result.

Synch/Asynch with out BPM

Hi All,
I have a HTTP to webservice scenario currently running in production , i.e .,
From the HTTP Application user sends a request to XI . XI makes a SOAP call and sends the request back to HTTP Application .
now I have a new requirement to write the SOAP request message to a JMS channel also.
Let me know how is it achievable with out using BPM .
Thanks and Regards,
KLK

Thanks for the replies , I have to clarify my question
Yes my requirement is to send the soap - response to JMS .
The above blog is File - RFC - File ( Asyn/sync) but my requirement is
HTTP - SOAP -- JMS (Syn/Asynch) .
The current scenario in production my o/b and i/b message interface are synchronus .
I need a i/b asynch interface reciepent for the SOAP response .
Let me know your thoughts
Thanks
KLK

RFC synch/asynch

Hi,
RFCs are synchronous by default. So they use BE as QoS.
How to make them Asynchronous so that they will use EO QoS?
In Asynch case will the RFC response be persisted or only request to RFC will be persisted?
thanks in advance,
KP

Hi,
transactional RFC (tRFC) and queued RFC (qRFC) are both asynchronous. But the RFC Adapter only supports tRFC, which only uses an outbound buffer (it's not a queue) and matches the QoS EO. On the sending system you can use the transaction SM58 to monitor the outgoing messages. The messages are buffered in the adapter framework, if the target system is not available.
As said above, on SAP releases prior to 6.20, SAP IDOCs are the only way to use EOIO.
A tRFC is called by using the additional line 'in background task'.
In the SAP System, there is no different definition for synchronous and asynchronous RFCs. The asynchronous just only use the importing parameters.
Regards,
Christian

Synch|/asynch bpel process

Hi!
what is thу main difference between synchronous and asynchronous bpel process? I mean, when you create bpel process - you can choice type. Because I dont think that the difference just in invoke and reply activities.
Message was edited by:
kpb

There are other differences too, as in how the processes are dehydrated.
If you are writing processes for a high load environment you should look at the BPEL tuning guides before just creating a bunch of asynch processes. Generally, the asynch processes will be hitting the dehydration store harder.

Synching Blackberry bridge and native email/calendar/contacts

Is there any way to synchronise between the bridge and the native email/contacts/calendar on the playbook? I prefer the playbook's email etc but don't always have the playbook with me, so I end up putting new contacts etc on my bb phone. What I would like to do is synchronise the new contacts etc onto the playbooks native apps when the two devices are connected by bluetooth.
Chris

Use Google sync.
Be a Shepard and not an iSheep.

BPM - Synch Asynch Process

My Scenario is File to File and also SOAP thru BPM for File Split. I have to do BPM for file split because of the timing dependency of delivery of files.
Here are the steps in Integration process:
1. Receive File from Sender A
2. Transform this file into multiple files ( In this transformation step Iam capturing Source File Name into separate message )
3. Send all files to the Receiver
4. Send Synchronously SOAP call to the Receiver and receive response message
5. String 'FileName' captured in Step2
and response message from Step4 to another message
6. Send the message from step 5 to the Sender A ( Original Sender )
My Question is Do I have to save the filename in Step2 as a message? Can I do it using Simple type in integration process, if yes, how can I do that.
Someone please explain?. Thanks

Hi,
Save the file name as a message. Anyway you need to send the file name in message right ? And if you want to use it, then use Mapping for the same
For container Operation, refer this-
http://help.sap.com/saphelp_nw2004s/helpdata/en/59/e1283f2bbad036e10000000a114084/content.htm
Regards,
Moorthy

Logical persepctive of synch /asynch interfaces

From logical perspective if a particular adapter : eg : JDBC , does not support synchronous processing , then why not create 2 interfaces ,one with sender jdbc and other with recv jdbc. Is this statement correct ?

hmm ok ... but do we not need bpm for this ? or we can count them as 2 sepearate interfaces ?
If there is no relation between the data passed in first flow and then in second flow.....or....if you dont want to correlate the two messages then no need of BPM, you can consider the two as separate flows. Ask your lead or business consultant how the flow has to be.
2) secondly i do not want to connect to database multiple times ,instead i want something like batch processing maybe at
10 am in night , can this be done via jdbc adapters or a stored procedure is needed?
Are you looking for Availability Time Planning (from SP19) functionality?
Regards,
Abhishek
Edited by: abhishek salvi on Jun 29, 2010 10:32 AM

Async -Synch Bridge

Hi,
I need the process for Asynch -synch Bridge.
Scenario -> FileBAPI---SQL Server
Regards,
Jayasimha Jangam

Hi,
Defining Sync/Async Communication
Use
To enable the communication between a synchronously calling business system (synchronous outbound interface) and an asynchronously called business system (asynchronous inbound and outbound interface), you can define a sync/async bridge in an integration process. You can only define one sync/async bridge for each integration process.
You can also achieve sync/async communication by using the JMS adapter. If you do not have any particular demand for monitoring or for troubleshooting, SAP recommends that you use sync/async communication in the JMS adapter instead. The advantage of using the JMS adapter over synch/async communication using an integration process is a significant increase in system performance.
See: Async/Sync and Sync/Async Bridge in JMS Adapter
Structure of a Sync/Async Bridge
The following table outlines the minimum components of a sync/async bridge:
Step
Use
Receive step to open the sync/async bridge
Receives the message request from the synchronously calling business system and opens the sync/async bridge
Asynchronous send step
Sends the received message asynchronously to the asynchronously called business system
Receive step
Receives the message from the asynchronously called business system
Send step to close the sync/async bridge
Sends, for example, the response from the asynchronously called business system to the synchronously calling business system
Performance Considerations
If you insert additional steps in the sync/async bridge, the synchronous time is increased correspondingly. If the time that elapses before the sync/async bridge is closed is too long, this can lead to problems.
Fault Messages
It is currently not possible to send fault messages back to the synchronously calling business system. If you want to return error statuses to the synchronously calling business system, you can define a field for an error indicator in the message that is sent to the synchronous interface.
Procedure
Define a Receive Step to Open the Sync/Async Bridge
1. Insert the receive step to open the sync/async bridge in the integration process.
You can do this at the following points:
○ Directly after the start marker
○ As the first step in a block if the block is the first step of the integration process and if it has the mode Standard
○ As the first step in a fork. If the fork already contains some starting receive steps, the Start Process indicator is automatically reset for these steps.
2. In the object area, define the container element that receives the synchronously sent message.
Specify an asynchronous, abstract interface in the container element. The message must correspond to the request message of the synchronous interface used to receive the message.
3. Select this container element in the Message field in the properties area of the receive step.
4. In the Mode field, select Open S/A Bridge.
5. Select the Start Process field.
The receive step to open the sync/async bridge must start the integration process. There must be no other receive steps to start the integration process.
6. Specify the synchronous interface for receiving the message from the synchronously calling business system. The message type of the message to be received and the request message from the synchronous interface must be identical.
Define an Asynchronous Send Step
7. Insert a send step that sends the received message asynchronously to the asynchronously called business system.
See also: Sending Messages from Integration Processes Asynchronously
Define a Receive Step
8. Insert a receive step that receives the message from the asynchronously called business system.
Define a Send Step to Close the Sync/Async Bridge
9. Insert the send step at the required position in the process definition.
Do not insert the send step in a loop, block, or fork.
10. In the Mode field, select Close S/A Bridge.
The integration process must not contain any further send steps to close a sync/async bridge.
11. In the Opened By field, specify the receive step that opened the sync/async bridge.
12. In the message field, specify the message that is sent to the synchronous interface.
This message must be of the same type as the response message from the synchronous interface that you specified in the opening receive step.
Example
You can find an example of a sync/async bridge in the Integration Repository under SAP Basis à SAP Basis 6.40, namespace http://sap.com/xi/XI/System/Patterns under BpmPatternSyncAsyncBridge.
For a description of the example, see Example: Sync/Async Communication.
BPM is an additional advantage of Netweaver XI. it provides features like Sync-Async Bridge, Async-Sync Bridge, stateful msgt processing.....so on.
Sync-Async Bridge acts as a bridge between a synchronous Business system and Asynchronous business system.
forex: if u r communicating with a synchronous RFC to a File system(always asynchronous, which is not able to send any response to synchronous RFC Interface).
In this kind of scenarios BPM Sync-Async Bridge enables communication between a Synchronous RFC to Asynchronous File system or vice versa..
Sync/async communication enables a synchronous sender system to communicate with a receiver system that cannot process synchronous messages
Plz go thru the following:
/people/sriram.vasudevan3/blog/2005/01/11/demonstrating-use-of-synchronous-asynchronous-bridge-to-integrate-synchronous-and-asynchronous-systems-using-ccbpm-in-sap-xi - Use of Synch - Asynch bridge in ccBPM
https://www.sdn.sap.com/irj/sdn/weblogs?blog=/pub/wlg/1403 [original link is broken] - Use of Synch - Asynch bridge in ccBPM
Asyn - Synch BPM - /people/sudheer.babu2/blog/2007/01/18/asyncsync-communication-using-jms-adapter-without-bpm-sp-19
http://help.sap.com/saphelp_nw70/helpdata/en/83/d2a84028c9e469e10000000a1550b0/content.htm
http://help.sap.com/saphelp_nw70/helpdata/en/43/65d4dab39b0398e10000000a1553f6/content.htm
Example on Sync/Async communication:
http://help.sap.com/saphelp_nw04s/helpdata/en/43/65d4dab39b0398e10000000a1553f6/frameset.htm
Reward points if helpful..
Regards,
Soumya

Synch RFC--BPM --Sync JDBC

Hi All,
I am doing a schenario where in im using BPM.
Synch RFC from XI box will trigger the interface, then i will make a synch call to sql server & synch call(RFC) to R/3.
Can anyone please letme know the steps required in BPM.
Do i need synch-async bridge?
And also lemme know if i can map a ASyncronous Message Interface to a Syncronous Message Interface.
Can i Map source as Synch RFC & target as synch sql & synch rfc R/3.If not how do i map
Thanks
Sumit
Message was edited by: Sumit Khetawat

Sumit,
I just looked upo into one of my SYNCH AYNCH Scenarios and i have created my interfaces exactly like i mentioned in these steps,
1. RECEIVE step ==> Opens SYNCH ASYNCH bridge and receives RFC request message.
( This will have a synchronous message interface associated with it. A synch abs interface and will be used for the PROPERTY ~~Synchrnous Message in the BPM) We would also need an ABS ASYNCH Message Interface created for the Request Message and this should be used in the MESSAGE ( after creating CONTAINER element) for the same. )
2. Transfrom step ==> Map RFC request message to JDBC request message. Mappinng between 2 abs Aynch Interfaces
( You will have container elements created for REq RFC as stated in the step 1 and another for JDBC request )
3. SEND synchronous ==> to send JDBC request and get the JDBC response.
( You will use a SYNCH ABS against MESSGAE INTERFACE , and also, a separate ABS ASYCNH for request and response )
4. TRANSFORM step==> Map JDBC response to RFC response . Mapping between ABS Interfaces
( same as step 2)
5. SEND ==> Closes SYNCH ASYNCH bridge and Send's response back to the RFC.
Use the Container element created for the mapping in step 4.
In case of Split mapping, again you will need ABS ASYNCH Message interfaces.
Drop me a mail if you need screen shots.
Regards,
bhavesh
All you mapping in the BPM is between Asynch Abs Interfaces.

Synch/Asynch Bridge

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