Using tRFC or qRFC with JCo

Hello,
how can I use JCO to perform tRFC to an R/3 system from a java application running on WAS 640?
I understand that according to the docs JCo should be able to do tRFC and qRFC. Are there sample code
fragments that show how to implement tRFC, e.g. the
transaction-id handling? Has anybody experience using
JCo for tRFC or qRFC?
As far as I know it's the only secure way to call BAPIs
that are modifying master or transactional data in SAP.
Thanks for your help,
Kind regards
Christof Johner
Thanks
Bruno

Hi Christof,
there is another thread in this forum concerning JCo and transactions: Maybe you can find something there.
There is a method createTID in JCO.Client and I have it working. I get a tid that seems to be valid. What I do is something like this:
String tid = JCO.Client::createTID()
1. JCO.Client::execute(JCO.Function, tid)
n. JCO.Client::execute(JCO.Function, tid)
call BAPI_TRANSACTION_COMMIT or BAPI_TRANSACTION_ROLLBACK using JCO.Client::execute(JCO.Function, tid).
Unhappily, the whole thing does not become transactional this way: rollback does not work and the sucks gets committed after every single RFC call.
According to footnote 6 in http://www.sapinsideronline.com/searchspi/search.htm?page=article&key=32644&query_text=JCo using JCo.Client::createTID must be the way to go, though.
This Mr.Schüsseler from arasoft.de seems to know how. As I have the same problem I'm going to send him a mail to ask him.
Let me know in case you figure anything out ([email protected]). In case I figure anything out I will post it here.
Cheers, Oliver

Similar Messages

Data transfer b/w SAP to Java using IDOC and Interface SAP Jco

Dear Experts,
The challenging requirement we are having is, we need to create the interface for data transfer between SAP system and the Java system. The data will be transferred from SAP to java and similarly once some processing done in Java again the details needs to be transferred from Java to SAP.
For this data transferred we are planning to use IDOC process and for interface "SAP Java connector (Version 3.0.5)" we are planning to use. As per our understanding, from Java side one program needs to be written to connect with SAP as "Registered program". This registered program will appear in SAP GATEWAY automatically and using tRFC, TCP/IP connection both SAP and Java system will be connected.
In this case we are having some doubts.
1. The data from SAP is going to be transfered from one Custom transaction (Z tcode). Once "Outbound IDOC" will get triggered and will carry the details. Now the doubt is, whether the data / details will get transfered to JAVA system automatically or we need to perform any other steps from SAP ABAP coding...(like converting in to flat file, XML file and etc) ??
2. We are planning to install "SAP Jco" in Java server. Is this correct...??
3. Other than SAP Jco any other softwares needs to be installed or not..??
4. Since we are going to trigger the "outbound IDOC" from custom transaction, we are planning to develope one program in SE37. Other than this any other program we need to develop or not..??
5. Any sample Java program for the SAP Jco version 3.0.5 to create the "Registered program" with SAP..? (e.g. SAP Listener program).?
If anybody has detailed steps or explanation please share it with us.
Thanks in advance
Warm Regards,
VEL

Hi All,
For the above mentioned issue, we implemented JCo software in JAVA system and created the JAVA program including SAP logon credential details like Client, User name, password and Language details.
When this JAVA program was compiled successfully then, that non SAP system will appear in SAP gateway Tcode.
Once non SAP system started appearing in SAP gateway that means, both SAP & Non SAP are connected automatically.
Regards,
Velmurugan P

Difference between TRFC and QRFC

Dear all,
i understand that TRFC functions as EO and QRFC functions as EOIO.
but can anyone of u pls make me understand there significance with a practical example :
1. in terms of XI
2. without XI when we say that one R3 is connected to other with say TRFC or QRFC
pl help

Hi! Tarang,
I just adding few points in this forum...Actually your question and some of the answers given are different .Some of them are deviating the topic.
According to my knowledge and as per SAP documentations also I am adding these points. Correct me if I am wrong.
At first QRFC , TRFC are different from the BE, EO and EOIO because trfc are message protocols and BE , EO and EOIO are nothing but Quality of Services (QOS).
You can check this in the below URL::
http://help.sap.com/saphelp_nw70/helpdata/EN/0d/5ab43b274a960de10000000a114084/frameset.htm
QOS is one of the property of TRFC's.
1) See Got o SMQ1 an SMQ2 what you will found:: ?
QRFC Monitor Outbound Queue and QRFC Monitor Inbound Queue. both Queues QRFC s common.ok its a simple thing.
2) Also lets take IDOC Adapter for IDOC whether it may be File to IDOC or IDOC to File Scenario where you will monitor the IDOC in SM58 also right ? why because this TRFC's are mainly for communicating with one SAP system to another SAP System. IDOC is mainly sending data via TRFC ports. That is why you ill monitor the IDOC if data doesn't reached means in Transaction COde:: SM58.
3) QRFC Outbound and QRFC Inbound is mainly for communicating with SAP System and Non SAP Systems. Okay you can get this information in the below further explination and link.
Note::qRFC communication is an extended form of tRFC communication. It adds a serialization concept to the transactional concept of tRFC.
http://help.sap.com/saphelp_nw70/helpdata/EN/3b/befa40badbf46fe10000000a1550b0/frameset.htm
Some applications use qRFC with outbound queue to improve system performance and not for serialization. If this is the case, you can switch automatically from the qRFC LUW with outbound queue to the tRFC LUW to avoid a hanging queue if a SYSTEM_FAILURE occurs
Note:: To cancel a background job if tRFC errors occur use program RSARFCEX to restart tRFC.
First What is the purpose of RFC:: ?All types of applications are instructed to communicate with other applications. This communication may take place within an SAP system, with another SAP system, or with an application from a remote external system. An interface that can be used for dealing with this task is the Remote Function Call (RFC). RFCs can be used to start applications in remote systems, and to execute particular functions.
There are 3 types of communications::
Communication within an SAP system or with a remote system can take place using Remote Function Call (RFC). This enables the following scenarios:
·      a) Communication between two independent SAP systems
       b) Communication between a calling SAP system and an external receiving system
       c) Communication between a calling external SAP system and an SAP system as the receiving
            system
Features of the Three Communication TypesTo help you decide which communication types you need to implement according to your system landscape and your requirements, the advantages of the three types of communication are explained below:
... 1)      tRFC
Suitable only for independent function module calls; the sequence of the calls is not preserved
·   2)   qRFC with outbound queue
Function modules in a queue are guaranteed to be processed only once and in sequence (serialization). Also suitable for communication with non-SAP servers.
·   3)     qRFC with inbound queue
The function modules created in the outbound queue are transferred from the outbound queue to the inbound queue; the sequence of the function modules is preserved. An inbound scheduler processes the inbound queues in accordance with the specified resources. Both the client and the server system must be SAP systems. One work process is used for each inbound queue.
http://help.sap.com/saphelp_nw70/helpdata/EN/3b/befa40badbf46fe10000000a1550b0/frameset.htm
http://help.sap.com/saphelp_nw70/helpdata/EN/e7/555e3c0f51a830e10000000a114084/content.htm
XI point of View...
Basically Once the TRFC or QRFC is funtion is over XI will place the Message into the Adapter engine queues based on the Comminication channel configuration.
Suppose if it is and EO then XI ill place the message in any Queue based on the free and priority and if configuration is done as per EOIO then XI ill place all the messages in the Same queue name so that it ill processes in order one after another and if the above message fails and remaining all other messages will be in the queue and doesnt process untill the failed mesages gets removed
But in case of EO it may be places in any queue and if one message fails then another message of same interface may processed sucessfully based on another queue order.
I hope it wil be helpful to you...
Regards::
Amar Srinivas Eli

DynamicRFCException with JCO.client problem

Hi,
Iam trying to execute an RFC from webdynpro.Iam getting the following error.So as a result i dont get any result as expected on my screen as the RFC is not getting executed due to JCO problem.Please kindly let me know the reason.In the last line of the exception it talks about user authentication.I dont have any idea whats the reason.This happens as soon as my bapi execute statement in my controller is executed.
could not create JCOClientConnection for logical System: WD_MODELDATA_DEST - Model: class com.test.Getmodel. Please assure that you have configured the RFC connections and/or logical system name properly for this model!
com.sap.tc.webdynpro.modelimpl.dynamicrfc.WDDynamicRFCExecuteException: Error connecting using JCO.Client: null at com.sap.tc.webdynpro.modelimpl.dynamicrfc.DynamicRFCModel.prepareExecute(DynamicRFCModel.java:179) at com.test.Getmodel.bapi_Ben_Bus3029_Get_Evt_List(Getmodel.java:141) at com.test.Bapi_Ben_Bus3029_Get_Evt_List_Input.doExecute(Bapi_Ben_Bus3029_Get_Evt_List_Input.java:137) at com.sap.tc.webdynpro.modelimpl.dynamicrfc.DynamicRFCModelClassExecutable.execute(DynamicRFCModelClassExecutable.java:92) at com.avid.benefits.Benefitscust.executebapi(Benefitscust.java:128) at com.avid.benefits.wdp.InternalBenefitscust.executebapi(InternalBenefitscust.java:162) at com.avid.benefits.AvidusbenefitsView.wdDoInit(AvidusbenefitsView.java:97) at com.avid.benefits.wdp.InternalAvidusbenefitsView.wdDoInit(InternalAvidusbenefitsView.java:129) at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.doInit(DelegatingView.java:61) at com.sap.tc.webdynpro.progmodel.controller.Controller.initController(Controller.java:215) at com.sap.tc.webdynpro.progmodel.view.View.initController(View.java:445) at com.sap.tc.webdynpro.progmodel.controller.Controller.init(Controller.java:200) at com.sap.tc.webdynpro.progmodel.view.ViewManager.getView(ViewManager.java:709) at com.sap.tc.webdynpro.progmodel.view.ViewManager.bindRoot(ViewManager.java:579) at com.sap.tc.webdynpro.progmodel.view.ViewManager.init(ViewManager.java:155) at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.doOpen(WebDynproWindow.java:295) at com.sap.tc.webdynpro.clientserver.window.ApplicationWindow.show(ApplicationWindow.java:183) at com.sap.tc.webdynpro.clientserver.window.ApplicationWindow.open(ApplicationWindow.java:178) at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.init(ClientApplication.java:364) at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.initApplication(ApplicationSession.java:756) at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:291) at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:713) at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:666) at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:250) at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:149) at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doContent(DispatcherServlet.java:62) at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doGet(DispatcherServlet.java:46) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:401) at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:266) at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:386) at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:364) at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:1039) at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:265) at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95) at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:175) at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33) at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41) at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37) at java.security.AccessController.doPrivileged(Native Method) at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:102) at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:172) Caused by: com.sap.tc.webdynpro.modelimpl.dynamicrfc.WDDynamicRFCException: Could not create JCOClientConnection for logical System: WD_MODELDATA_DEST - Model: class com.test.Getmodel. Please assure that you have configured the RFC connections and/or logical system name properly for this model! at com.sap.tc.webdynpro.modelimpl.dynamicrfc.AiiModel.getCurrentlyUsedJcoClient(AiiModel.java:210) at com.sap.tc.webdynpro.modelimpl.dynamicrfc.DynamicRFCModel.prepareExecute(DynamicRFCModel.java:170) ... 42 more Caused by: com.sap.tc.webdynpro.services.sal.sl.api.WDSystemLandscapeException: Error while obtaining JCO connection. at com.sap.tc.webdynpro.serverimpl.wdc.sl.SystemLandscapeFactory.getJCOClientConnection(SystemLandscapeFactory.java:152) at com.sap.tc.webdynpro.services.sal.sl.api.WDSystemLandscape.getJCOClientConnection(WDSystemLandscape.java:30) at com.sap.tc.webdynpro.modelimpl.dynamicrfc.AiiModel.getCurrentlyUsedJcoClient(AiiModel.java:189) ... 43 more Caused by: com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: Failed to resolve connection parameter for 'WD_MODELDATA_DEST' at com.sap.tc.webdynpro.serverimpl.wdc.sl.JCOClientConnection.resolveConnectionParameter4MsgServerJCODestination(JCOClientConnection.java:649) at com.sap.tc.webdynpro.serverimpl.wdc.sl.JCOClientConnection.resolveConnectionParameter(JCOClientConnection.java:476) at com.sap.tc.webdynpro.serverimpl.core.sl.AbstractJCOClientConnection.init(AbstractJCOClientConnection.java:233) at com.sap.tc.webdynpro.serverimpl.core.sl.AbstractJCOClientConnection.<init>(AbstractJCOClientConnection.java:218) at com.sap.tc.webdynpro.serverimpl.wdc.sl.JCOClientConnection.<init>(JCOClientConnection.java:129) at com.sap.tc.webdynpro.serverimpl.wdc.sl.SystemLandscapeFactory.getJCOClientConnection(SystemLandscapeFactory.java:150) ... 45 more Caused by: com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: User not authenticated - unable to establish JCO connection with SSO. at com.sap.tc.webdynpro.serverimpl.wdc.sl.JCOClientConnection.resolveConnectionParameter4MsgServerJCODestination(JCOClientConnection.java:584) ... 50 more
Error connecting using JCO.Client: null
Error connecting using JCO.Client: null: Could not create JCOClientConnection for logical System: WD_MODELDATA_DEST - Model: class com.test.Getmodel. Please assure that you have configured the RFC connections and/or logical system name properly for this model!: Error while obtaining JCO connection.: Failed to resolve connection parameter for 'WD_MODELDATA_DEST': User not authenticated - unable to establish JCO connection with SSO.

Hi Swathi,
The problem may be with JCo destinations. If you have authorization in Portal, navigate to Content Administration -> Web Dynpro.
In the left side you can see deployed web dynpro applications. Check in local, sap, or any of your custom namespace. Browse & select to your application. Right side you can see JCo destinations for your application. If they are in green color , means they are created. If not, ask your basis team to create them. If they are n green color, ping and test them. if they are working fine or not.
If they are fine, try to deploy after you have logged into the portal.
Regards,
Siva

Inbound scenario using tRFC - serialization

Hi Guys,
I have the following scenario:
An external System is communicating with SAP using tRFC queue.
So from the SAP perspective this is an inbound scenario.
I am wondering if the sequence of the IDocs that are attached to the tRFC queue by that external system
is kept while they get processed on the SAP side.
To say it in other words: Will SAP process the IDOcs in the same sequence as they were attached to the RFC queue before?
So if there is a communication error will be the sequence kept after communication is established again?
Or do I have to build the timestamp serialization - what I want to avoid as the ALE input function module doesn't provide this.
Thanks a lot.
Achim

Hi Dheeraj,
the challenge with the "map the TLOG and create WPUUMS Idoc" is that inside the TLOG you are getting receipt based data. But for the WPUUMS IDOC you'd be expecting to see aggregated information.
The better and recommended way to integrate SAP POS with SAP Retail is to use the delivered standard integration with the following two data streams:
1. SAP Retail master data (e.g. articels, prices, promotions) to SAP PI to SAP POS
2. SAP POS - Transnet - SAP PI - SAP POS DM - SAP BW/SAP Retail
The advantage would be that aggregation is handled in POS DM and you have all the detail available in SAP BW and that you will be able to utilize the data collected for other processes as well.
Please check the Wiki for POS Integration which will give you a good overview about the integration and covered scenarios:
https://wiki.sdn.sap.com/wiki/display/CK/ExchangeInfrastructure-SAPPOS+Integration
For SAP POS DM you will find a wiki here:
https://wiki.sdn.sap.com/wiki/display/Retail/SAPPOSDM%28SAPPoint-of-SaleDataManagement%29
Additionally there are two courses focussing on this topics:
Integration: W26TGI
POS Data Management: W26POS
Kind regards,
Stefan

BAPI call with JCO too slow

Hello everybody,
I have an application which a call a BAPI in an ECC System. This BAPI is a specific one, and it is developed in Batch input to create a Billing document from a sales order.
This call take too much time and my java program don't wait for the answer of it. I have done some performance check on the program and this call take more of 1 minutes to finish.
Here is my program :
               //-Fill the entry parameter-
               //Import parameter
               paramImport = function.getImportParameterList();
               paramImport.setValue(SalesOrder, Constants.IV_VBELN);
               //Define Export parameter list for the returning Data
               paramExport = function.getExportParameterList();
               //Execute the BAPI
               client.execute(function.getName(), paramImport, paramExport);
The fact it is developped in Batch input could be a problem ? Tell me if there is a solution to speed up the process or to say to my java program to wait until the answer of the BAPI.
Thanks.

Hello Sir,
I am a student who is pursuing a project that deals with JCo 3.
I read your question on the forum and think that you have done the JCo stuff and can answer my questions.
Kindly, try to shed some light on following question:
Q1: I simply want to start with connecting my SAP system. I have a user ID and password for the same.
I saw some examples where they use "JCo.createClient(....)" and "JCo.client.connect()" to simply connect the client but
when I type in the code it shows me an error, because they are using package "com.sap.mw.jco" but since I am using JCo3,
I don't have that package instead I have "com.sap.conn.jco" which do not have createClient function.
Q2: By setting the classpath for "sapjco.jar" I was able to compile one of the sample programs but could not run it. Do you
know how to run the SAP JCo program.
Your guidance will be highly appreciated
-Thanks
-Dmukhi

QRFC with ALE for outbound interfaces

I'm working on a client that is using ERP 4.7 (R/3). We would like to use the ALE qRFC addition to utilize the serialization concept. In the partner profile, I see a check box that says "queue processing". To our understanding, it enables qRFC with ALE. But how does the function module (FM) MASTER_IDOC_DISTRIBUTE determine which queue naming function module to call from transaction WE85? WE85 is a transaction where you define a function module to set your queue name based on the control record or IDOC. Do you pass the Rule Name from WE85 into the MASTER_IDOC_DISTRIBUTE and thus ALE calls the associated queue naming FM ? If so, what field do you set in the control record?

http://help.sap.com/saphelp_nw70ehp1/helpdata/en/48/05daa0b5133ca0e10000000a42189c/frameset.htm
http://help.sap.com/saphelp_nw70ehp1/helpdata/en/c7/4efe402762ef6fe10000000a1550b0/frameset.htm
http://help.sap.com/saphelp_nw70ehp1/helpdata/en/c2/4356429c69b430e10000000a155106/frameset.htm
http://help.sap.com/saphelp_nw70ehp1/helpdata/en/e7/555e3c0f51a830e10000000a114084/frameset.htm
Please go through this link.
This would help you..

PDV with JCO

Hi,
I want to connect to a BAPI with JCO, using PDV as view. I extend PDVDynPage to achieve this.
Now my question is: Do I have to handle JCO connection pooling (providing access data), JCO repository creating etc. on my own when using PDV and building a JCO.Table or is there a way to automatically retrieve this? I had this idea since I didn't have to cope with connection stuff when using ALV as source type.
Any ideas?
Thanks & regards,
Michael

Hi,
I think MSS -> Phone List iview may help to you.
Regards,
Altug Bayram

Replainf JDBC with Jco

Hi,
i want to replace my JDBC with Jco to communicate with SAP. May i know what all are required to do ?

if you want to use adaptive rfc model that can communicate with SAP you need to follow this link
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/uuid/355b9c90-0201-0010-d2a8-89fece426526
for that you need to configure the JCO destinations follow this
http://help.sap.com/saphelp_nw04/helpdata/en/3a/3b1b40fcdd8f5ce10000000a155106/frameset.htm
if you want to java connectors to connect to SAP follow this
https://forums.sdn.sap.com/click.jspa?searchID=8562442&messageID=4388980
reward points if helpful

Creating filters for tRFC and qRFC (SM58).

Hi All,
I am trying to create filters for qRFC and tRFC as per OSS note 441269 - Setting up tRFC/qRFC monitoring in the alert monitor. When I try to create/copy owner I am getting error "_not in name space_" in task bar when I try to save the changes, I tried all kinds of naming convection still unable to proceed. Pls tell me how can I resolve this issue.
System:-
Kernel version 700
Support pack 13
Regards,
kurma

Hi Jordan,
We used to 'reorganize' the tRFC/qRFC LUWs via sm58.
Your found note is ok and try to refer some other notes as well.
Note 375566 - Large number of entries in tRFC and qRFC tables
Note 760113 - Delete unprocessed LUWs in the qRFC
Following similar thread might also help -
how to delete error entities in TRFC queue to clear stuck
Thanks

BGRFC advantages over trfc and qrfc

Hi ,
Can anyone tell me what are the advantages of bgrfc over trfc and qrfc if i have to consider bgrfc.
Thanks
Akriti

Hello Akriti,
bgRFC allows you to do everything that you could do with "Classic tRFC and qRFC".
But it does it faaar better.
It is far more scalable and has far better performance.
All these benefits are due to the way the bgRFC schedulers could be configured.
With "Classic tRFC and qRFC" - there is only one scheduler (one each for outbound and inbound) for the entire client. All the tRFC, qRFC entries for a given client are processed by only one scheduler and there is no way to increase the number of schedulers.
With bgRFC - you can have multiple schedulers in the system (in fact, multiple schedulers per application server is also possible).
The configurations could be controlled with SBGRFCCONF.
Remember though that simply increasing the number of schedulers does not increase the performance directly. I would suggest to keep the default settings there in SBGRFCCONF (by default, there will be one scheduler per application server in the system) and consider increasing the number only if this is not helping your performance.
I highly recommend bgRFC.
Thank you,
Best Regards,
JothiSubaramaniam P
SAP IMS CST

How do I use Edge Web Fonts with Muse?

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Hello,
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http://helpx.adobe.com/muse/tutorials/typography-muse-part-2.html
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