Communication among defferent systems

hi experts ,
I have the scenario as following:
One file system is sending a file to XI server (XIA) and from there XIA sending to another XI server (XIB) and finally to the destination file system.
I am not getting why they have used two XI servers to send the same file.
Please help me in the same regard.
Thanks
sreenivasulu

Use the XI adapter for Xi to XI communication.
<b>XI - A</b>
1. IR create outbound message interface and inbound message interface liek for any File to File Scenario.
2. Id , sendr service will be your file servive, receievr service will be the WebASABAP system you create in SLD for XI B.
3. Create Receievr Determination, Sender Agreement and Receiver Agremeent here. Receievr Adapter will be XI adapter with the details of XI B
<b>XI - B</b>
1. Use same message interface name used for Inbound Message interface in XI - A and use it as the outbound message interface here. Create IR content with stright mappings.
2. Now, creatre ID obecjts with File adapter as Recieevr Adapter , no sender adapter and correspondiong Receievr Determination. Sender Service will here be XI - A WebAS ABAP Business Systrem created in the SLD.
Regards
Bhavesh

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hello
we have several internal systems that are within the same lan and want to communicate with several external systems that may be in the other buildings by using the release line.i am now considering the architecture for the project,and have got an immature blueprint,please help me to make it more perfect by give me your opinions,the scenario as:
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in my project,the timelimit is critical,as short as possible.
according to the mentioned requirements,i decide to develop a infomation exchanging platform by using java which sit in the MIDDLE of the internal and external systems and WITHIN the lan,act as information dispatcher or coordinator,both of the internal system and external system communicate with it only.considering the multi-language and time-critical feature,i choose the way of socket communication among the systems and design a set of xml format internal protocol.otherwise,i think the message middleware are also needed within my project as message buffer.when i deepen into the detailed designing,i get some confusions,let us discuss them as followiing:
1 if is the socket the good solution for my project?how can i assign the ports?because of the introduction of the information exchanging platform into my project,the communication combination is simplified to "internal system<-->info exchange platform" and "external system<-->info exchange platform",the crucial point for the port designing is how to assign the port in the info exchange platform,that is SERVER socket port.in my designing,i plan to assign different port for each subsystem.thus,the devleopment to the info exchange platform is simplified,that is:when the message comes,i don't need to analyse the xml message to check which system it comes from.but some people suggest me to open ONE port to all the internal systems,and ANOTHER port to all the external sysetms.i don't know which solution is better?if are there some regulations that concern about the socket port assigning?
2 if is the information exchanging platform needed?some one suggest that subsystems can communicate with each other directly,
the coordinating platform is not needed.but i think,from the EAI point of view,there should be a adapter between the internal system and external system.
3 where should i put the message queue server?and if is the mom needed?i plan to use the mq between the exchange platform and external systems ONLY,and it is also within the lan,in my designing,i config two queue for EACH external system,one for incoming message and other for outgoing message,to each queue,i assign a message listener to execute different operations on its "onMessage" method,that is:when the message come from internal system,the exchange platform send them to the exact OUTGOING queue according to the destination of the message,then the listener of the queue call the socket of the according external system and send the message to it.otherwise,when the external system need to send the message to internal system,it call the exact socket port in the exchange platform that is assigned to it as mentioned above,the platform accept the msg,and send them to the exact incoming queue,then the listener deal with the msg and send them to the internal destination.in this solution,i put the mq behind the socket,but someone give me another suggestion,that is i directly put the message queue between the exchange platform and the external systems instead of using the socket as the front-end,all of them send the message to the queue and listen the queue,but i think,in such solution,the external system must listen the queue REMOTELY,is it a good way?
also,somebody tell me that the exchange platform and remote external system can communicate each other DIRECTLY by socket,the message queue is not needed,i don't make sure if the mq is necessary in my situation?and what is the benefit and disadvantage?
as for the communication between the internal system and info exchange platform,i think the mq is NOT needed,they can communicate each other directly by socket,furthermore,in my designing,i make them connect to each other FOREVER,that is i don't close the socket after each message transferation,as mentioned above in the issue of the socket assigning,every port in the exchange platform is DEDICATED,that means the port is specific to each system,so that they don't need to create and close socket connection frequently,that will make the program more performant,but if i use one port to listen all the internal system,then the socket must be closed by the end of each transferation because of the block problem,that is just another reason why i use dedicated port connection to each of the internal system.
4 the another question is the secure issue accompanying by the socket,i think i needn't consider such problem in the internal connection,but to the connection between the platform and external system,the issue become preeminent,that is i must open the socket port in the firewall.but i think the connection between the lan and the external system use special line,not by internet,i wonder if the secure probem is critical in such situation?otherwise,i remember that some kinds of product from visibroker company can solve the firewall socket problem by using the http channel protocol,but i don't remember its name for sure,it seem like is called something gateway.who used such kind thing?and tell me how does it work?

hello
we have several internal systems that are within the same lan and want to communicate with several external systems that may be in the other buildings by using the release line.i am now considering the architecture for the project,and have got an immature blueprint,please help me to make it more perfect by give me your opinions,the scenario as:
within the lan,there are several systems that are developed by using different languages,let's suppose they are two(named internal1 and internal2),the two systems need to communicate with other two external systems(named external1 and external2) that are also developed by using different languages.all of the communications are bi-direction.there are several combinations:
1 internal1 <--> internal2
2 internal1 <--> external1 or external2
3 internal2 <--> external1 or external2
in my project,the timelimit is critical,as short as possible.
according to the mentioned requirements,i decide to develop a infomation exchanging platform by using java which sit in the MIDDLE of the internal and external systems and WITHIN the lan,act as information dispatcher or coordinator,both of the internal system and external system communicate with it only.considering the multi-language and time-critical feature,i choose the way of socket communication among the systems and design a set of xml format internal protocol.otherwise,i think the message middleware are also needed within my project as message buffer.when i deepen into the detailed designing,i get some confusions,let us discuss them as followiing:
1 if is the socket the good solution for my project?how can i assign the ports?because of the introduction of the information exchanging platform into my project,the communication combination is simplified to "internal system<-->info exchange platform" and "external system<-->info exchange platform",the crucial point for the port designing is how to assign the port in the info exchange platform,that is SERVER socket port.in my designing,i plan to assign different port for each subsystem.thus,the devleopment to the info exchange platform is simplified,that is:when the message comes,i don't need to analyse the xml message to check which system it comes from.but some people suggest me to open ONE port to all the internal systems,and ANOTHER port to all the external sysetms.i don't know which solution is better?if are there some regulations that concern about the socket port assigning?
2 if is the information exchanging platform needed?some one suggest that subsystems can communicate with each other directly,
the coordinating platform is not needed.but i think,from the EAI point of view,there should be a adapter between the internal system and external system.
3 where should i put the message queue server?and if is the mom needed?i plan to use the mq between the exchange platform and external systems ONLY,and it is also within the lan,in my designing,i config two queue for EACH external system,one for incoming message and other for outgoing message,to each queue,i assign a message listener to execute different operations on its "onMessage" method,that is:when the message come from internal system,the exchange platform send them to the exact OUTGOING queue according to the destination of the message,then the listener of the queue call the socket of the according external system and send the message to it.otherwise,when the external system need to send the message to internal system,it call the exact socket port in the exchange platform that is assigned to it as mentioned above,the platform accept the msg,and send them to the exact incoming queue,then the listener deal with the msg and send them to the internal destination.in this solution,i put the mq behind the socket,but someone give me another suggestion,that is i directly put the message queue between the exchange platform and the external systems instead of using the socket as the front-end,all of them send the message to the queue and listen the queue,but i think,in such solution,the external system must listen the queue REMOTELY,is it a good way?
also,somebody tell me that the exchange platform and remote external system can communicate each other DIRECTLY by socket,the message queue is not needed,i don't make sure if the mq is necessary in my situation?and what is the benefit and disadvantage?
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4 the another question is the secure issue accompanying by the socket,i think i needn't consider such problem in the internal connection,but to the connection between the platform and external system,the issue become preeminent,that is i must open the socket port in the firewall.but i think the connection between the lan and the external system use special line,not by internet,i wonder if the secure probem is critical in such situation?otherwise,i remember that some kinds of product from visibroker company can solve the firewall socket problem by using the http channel protocol,but i don't remember its name for sure,it seem like is called something gateway.who used such kind thing?and tell me how does it work?

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Thanks & Regards

1. Are all SOA Adapters synchronous by nature? How can we achieve Asynchronous Communication among various systems designed in hetrogeneous technologies?
see first of all Adapters or not SOA Adapters Oracle Applications Adapters which were devloped using JCA(Java Connector Architecture) to connect to your target systems and exposed as webservices
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if you perform a Write/Produce/Put operation on File/JMS/MQ those will be Asynch manner means when ever you execute this operation at that pointing time only it goes and performs that operation on the target system
and we cant say that your approach is right or wrong it depends on your Business needs and in you case you are following a Point to Point Integration, there are lot Integration Acrchitectures are provided by Oracle.
and about DataSecurity,Reliability,Performance to achieve this we need to perofrm certain kind standards/steps which are provided by your software vendor
Krishna

Communication among defferent systems

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