JCo creation

Hi experts..
I want to create a JCo destination in my portal serever but when i open the webdynpro content adminstrator the JCo creation, Maintain JCo, check SLD, start SLD are in disabled mode..
so how can i enable those things..?

Hi,
Check the following links.
SAP JCo Functions,Architecture,Applications,Installation,Client & Server Programming :
http://help.sap.com/saphelp_nw70/helpdata/en/6f/1bd5c6a85b11d6b28500508b5d5211/frameset.htm
Creating Jco destination:
http://help.sap.com/saphelp_nw70/helpdata/en/3a/3b1b40fcdd8f5ce10000000a155106/frameset.htm
Maintaining Jco destination:
http://help.sap.com/saphelp_nw70/helpdata/en/94/3c1b40fcdd8f5ce10000000a155106/frameset.htm
The SAP JCo Repository :
http://help.sap.com/saphelp_nw70/helpdata/en/01/43e13d82fcfb34e10000000a114084/frameset.htm
Dynamic Jco creation Blogs:
/people/anilkumar.vippagunta2/blog/2007/02/06/dynamic-jco-creation
/people/gregor.wolf3/blog/2004/09/23/from-function-module-to-jco-application--part-1-of-3
Jco Pools :
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/85a483cb-0d01-0010-2990-c5168f01ce8a

Similar Messages

Error in Jcos creation

Hi all,
I am getting an error in Jcos creation.This is tyhe error I am facing.I checked evrything.Evrything seems ok.But i am getting the belwo error.
com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=zimssap GROUP=PUBLIC R3NAME=PRD MSSERV=sapmsPRD PCS=1 ERROR timeout while pending for route completion TIME Tue Jan 06 20:21:50 2009 RELEASE 700 COMPONENT NI (network interface) VERSION 38 RC -12 DETAIL NiErrSet COUNTER 1
I configured sld so many times but never faced this issue.Some starnge error .Timeout oending for route completion.Please let me know what could be the problem?
Thanks and reagrds,
Rajesh

Hi
com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION:
RFC_ERROR_COMMUNICATION | Unknown host
RFC_ERROR_COMMUNICATION - time out
Thanks,
Tulasi

Add R3 message server for Jco creation

Hi All,
I have just finished installing the NW04s Java stack with EP Sneak preview.
I need to develop a web dynpro application with Adaptive RFC model connecting to a backend R3.
Can somebody Pls help me how to add this backend system as message server so that I can see the system in the dropdown (right now this dropdown is empty) of Jco creation wizard.I am new to this administrative kind..Pls help on this..
Thanks,
Ashok

Hi ,
I added the required SAP system as a new technical system in the SLD.
Now I can see the messgae server dropdown value populated with this system.I was able to create a JCo as well.
But cannot test it .
It error as below
"com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=hattrick GROUP=PUBLIC R3NAME=MT2 MSSERV=sapmsMT2 PCS=1 ERROR timeout while pending for route completion TIME Tue Sep 23 15:53:59 2008 RELEASE 700 COMPONENT NI (network interface) VERSION 38 RC -12 DETAIL NiErrSet COUNTER 2 "
the sap system and my local WAS/SLD are on different domains.
But I am not able to ping SAP system host name hattrick from my machine.but can ping its IP.
So I created a entry in the host file mapping these but still the same error..
Any help Pls.
Thanks,
Ashok
Edited by: Ashok D on Sep 23, 2008 4:53 PM

JCO creation Error

HI ALL,
In creation of jco's i got the fallowing error.plz help me in this error.
com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=indiaides GROUP=SPACE R3NAME=IDS MSSERV=sapmsIDS PCS=1 LOCATION CPIC (TCP/IP) on local host with Unicode ERROR timeout while pending for route completion TIME Tue Jun 14 04:18:05 2011 RELEASE 700 COMPONENT NI (network interface) VERSION 38 RC -12 DETAIL NiErrSet COUNTER 2
Regards
Viswa

Hi Viswa,
You can try with a service entry in the portal host. Go to Windows system in path "c:\windows\system32\drivers\etc\services"
Add a entry - sapms<SID> 36xx/tcp where xx is the instance number of the R/3 message server (like - sapmsPRD 3600/tcp)
Hope it helps.
Regards,
Sen

JCO creation takes long time

Hi,
There is some problem with our portal while creating JCo Connection.
It takes very long time to create new JCo connection on development server . If i create Jco connection of same applicationon on other server(Qlty, prod), it takes very less time than development.
I am facing this problem from last few weeks, before it was working fine.
Regards,
Jigar Oza

Hi,
If the JCO connection creation is taking long time on development compared qlty, prod servers then it may be due to various reasons;
1. The H/W , system performance may not good.
2. Web server applications may be hanging up due to insufficient buffer, speed;
3. The Network you are using may not fast;
So please chk all of them & get support from ur basis team;

Error while selecting Load Balancing in JCO creation

While creating JCO i am facing this error.It is working fine with Single server connection,but when i chose Load balancing i error comes out.Please tell me the solution.
I have read couples of forum mentioned you need to start both Portal and ECC.
For you information my Portal and Java are both on diffrrent Box.
com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=olameccpdvr GROUP=PUBLIC R3NAME=DVR MSSERV=sapmsDVR PCS=1 LOCATION CPIC (TCP/IP) on local host with Unicode ERROR service 'sapmsDVR' unknown TIME Thu Feb 24 12:19:54 201 RELEASE 701 COMPONENT NI (network interface) VERSION 38 RC -3 MODULE nixxhsl.cpp LINE 776 DETAIL NiHsLGetServNo: service name cached as unknown COUNTER 5

Is your backend system configured correctly in your SLD ?
Go to transaction SMMS on your backend system that your are connecting to. Click on Goto=>Parameters=>Display. Look for "server port" value.
This should give you the TCP/IP port for your message server. It could be 3600 or 3601 (36NN - where NN is the instance number).
In your services file, if you made the entry at the end of the file, press Enter (Return) after your entry.
Try restarting your server after making the above changes.
- Shanti

Buttons not enabling for JCO Creation in SLD

Hi Experts,
When i logged in into my Webdynpro Content Administrator with administrative rights, all the button like Create JCo Destination, Maintain JCo Destination and Start assigned SLD are getting disabled expect Check SLD Connection Button.
Moreover, displaying a message : "Connection to System Landscape Directory (SLD) could not be opended successfully." at the bottom of the screen.
When i click on the Check SLD Connection Button and then Test Connection, it gives again the same message i.e "Connection to System Landscape Directory (SLD) could not be opended successfully."
Now, When i click on the Check SLD Connection Button and then Start SLD, SLD server is staring and running.
Another thing is, When i am starting my sld server from logging in into http://<hostname>:<port>/sld, SERVER status is running. I stopped it and again started, then it is starting, but giving an error message as:
"Failed to send start signal for complete cluster, SLD may still be stopped on other cluster nodes."
When saving any parameters like profile information, it is not saving and saying error as:"
Cannot save profile settings CIM_ERR_FAILED: Failed to initialize cluster notification sender."
My setting are correct in SLD Data Supplier in Visual Administrator. I had filled the host/port/user/password information for both "HTTP Settings" and "CIM Client Generation Settings".
It went worked well earlier, i come across this problem recently with my sld.
Another thing that i noticed is when i click on the "CIMClient Test" button, its getting an error message saying "Failed to Generate and Test CIMOMClient Object". But, ealier it came as successfull.
I have full authorization to use admin tools.
What might be the problem.
any help must be appreciated.
regards
sunil kumar

Hi Sunil,
We just had this issue couple of days before, this has to do with the JMS Provider Authorization. We did the following steps to solve our issue:
I. Default security configuration of JMS resources is in place (this is by far the most common scenario) and named anonymous users have been created.
Change the mapping of the "clients" jms role as follows:
1. Start the Visual Admin
2. Browse the tree in the left pane
<SID> -> Server 0 -> Services -> Security Provider
3. The "Policy Configurations" tab should be selected by default on the right hand side
4. Select the "service.jms.default.authorization" node from the "Components" list (should be the nineth entry from the top down)
5. Select the "Security Roles" tab
6. Select the "clients" node from the security roles list
7. You should see on the right hand side "Security Roles" list in which the "guests" node is marked
8. Switch to edit mode by pressing the change button on top (pencil icon). The "Modify" button should now become active
9. Press the "Modify" button
10.Select the "all" entry from the "Security Roles" list. The "Groups" pane should show one entry named "Everyone"
11. Press the "Save" button
12. Restart the cluster so that JMS and applications using it can reliably reinitialize.
Check
Note 971249 - JMSServerSecurityException thrown accessing JMS resources
for more details.
Hope this helps!
Regards,
Preetha Rethinam

JCO creation problem

Hi,
I have defined in SLD one WAS Java Server and one R3 system. I would like to define JCO to this R3. I can define JCO Single Server Connection (step 2 - connection type) - it is going ok, but I can define JCo for metadata while it required connection with load balancing. When i have checked out " Load-balanced Connection " type an exception occurred:
Failed to create new JCO client connection TestModel: 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:150) at com.sap.tc.webdynpro.serverimpl.wdc.sl.SystemLandscapeFactory.createJCOClientConnection(SystemLandscapeFactory.java:356) at com.sap.tc.webdynpro.services.sal.sl.api.WDSystemLandscape.createJCOClientConnection(WDSystemLandscape.java:107) at com.sap.tc.webdynpro.tools.sld.ButtonBar.onActionFinish(ButtonBar.java:224) at com.sap.tc.webdynpro.tools.sld.wdp.InternalButtonBar.wdInvokeEventHandler(InternalButtonBar.java:265) at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.invokeEventHandler(DelegatingView.java:87) at com.sap.tc.webdynpro.progmodel.controller.Action.fire(Action.java:67) at com.sap.tc.webdynpro.clientserver.task.WebDynproMainTask.handleAction(WebDynproMainTask.java:101) at com.sap.tc.webdynpro.clientserver.task.WebDynproMainTask.handleActionEvent(WebDynproMainTask.java:304) at com.sap.tc.webdynpro.clientserver.task.WebDynproMainTask.execute(WebDynproMainTask.java:649) at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:59) at com.sap.tc.webdynpro.clientserver.cal.ClientManager.doProcessing(ClientManager.java:248) at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doWebDynproProcessing(DispatcherServlet.java:154) at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doContent(DispatcherServlet.java:116) at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doPost(DispatcherServlet.java:55) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:390) at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:264) at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:347) at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:325) at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:887) at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:241) at com.sap.engine.services.httpserver.server.Client.handle(Client.java:92) at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:148) 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:100) at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170) Caused by: com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: Failed to resolve connection parameter for TestModel at com.sap.tc.webdynpro.serverimpl.wdc.sl.JCOClientConnection.resolveConnectionParameter4MsgServerJCODestination(JCOClientConnection.java:670) at com.sap.tc.webdynpro.serverimpl.wdc.sl.JCOClientConnection.resolveConnectionParameter(JCOClientConnection.java:486) at com.sap.tc.webdynpro.serverimpl.core.sl.AbstractJCOClientConnection.init(AbstractJCOClientConnection.java:248) at com.sap.tc.webdynpro.serverimpl.core.sl.AbstractJCOClientConnection.<init>(AbstractJCOClientConnection.java:222) at com.sap.tc.webdynpro.serverimpl.wdc.sl.JCOClientConnection.<init>(JCOClientConnection.java:106) at com.sap.tc.webdynpro.serverimpl.wdc.sl.SystemLandscapeFactory.getJCOClientConnection(SystemLandscapeFactory.java:148) ... 30 more Caused by: java.lang.NullPointerException at java.util.Hashtable.put(Hashtable.java:393) at com.sap.tc.webdynpro.serverimpl.wdc.sl.JCOClientConnection.resolveConnectionParameter4MsgServerJCODestination(JCOClientConnection.java:564) ... 35 more
What more should I configure?
Regards Bogdan

I have found that I should logon group in message server define. I have made that and now I have succesfully JCo created but when i try it test I becam an error message:
com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=sap47c13 GROUP=PUBLIC R3NAME=C13 MSSERV=sapmsC13 PCS=1 LOCATION CPIC (TCP/IP) on local host with Unicode ERROR service '?' unknown TIME Mon Jan 16 22:48:30 2006 RELEASE 640 COMPONENT NI (network interface) VERSION 37 RC -3 COUNTER 1
I suppose, I have to this logon group on back end system define but I dont know how
Bogdan
Message was edited by: Bogdan Rokosa

JCO Creation error using SAP router string

Hi All,
I have created technical system using customer system IP. After that I have created the JCO
I have given the details while creating a JCO:
JCO Name : <Name>
Client detail: <Client>
Message Server :< hostname>
Logon Group :<SPACE>
SAP Router String :< /H/<host IP>/H/S/<message server port number>
User Name :<User name>
Password :<***>
I have updated the Host and service file in the portal server.
When I am testing the JCO I got an exception:
com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=dicisap1 GROUP=PUBLIC R3NAME=DCD MSSERV=sapmsDCD SAPROUTER_STRING=/H/<RouterIP>/S/3600 PCS=1 LOCATION SAProuter 37.11 on SOLNMAN ERROR timeout occured TIME Wed Nov 05 17:42:31 2008 RELEASE 640 COMPONENT NI (network interface) VERSION 37 RC -93 COUNTER 4825
How to resolve this problem ?
Regards,
Boopathi M

Hi
Check out these thread
/message/5401584#5401584 [original link is broken]
JCO$Exception: (102) RFC_ERROR_COMMUNICATION: CPIC-CALL: 'SAP_CMACCPTP'
Thanks

What's the Name and PWD in JCO Creation ?

Hello All,
 I want to create a JCo Connection.
These are the steps which I've followed :-
1. Logged on to the Portal with username and PWD.
2. Went to the WebDynpro Tab.
3. Clicked on Create JCo Connection
4. Entered the details :-
 NAME : Test_Meta_Data
 Client : 800
Note: I gave the client number of the SAP backend system . Is it right ?
5. J2EE Cluster : I have only one server in the DropDown and it's already selected.
So I choosed the next step.
6. Connection Type : DICTIONARY META DATA
7. Application Server Connection :-
 Message Server : Only one server I have in the DropDown and so I selected that.
8. Security :
 Use Method : USER / PASSWORD
 Name : sapuser
 PWD : server
 Confirm PWD : server
 SNC : OFF
9. Finish.
When I press Finish I'm getting a message :-
" failed to create a new JCo Connection Test_Meta_Data
Error while obtaining JCo Connection. "
Can any one help me in resolving this ?
Regards,
Deepu:k

Hi Deepu,
Firstly,
Yes, The details u enter while creating JCO connection are for the SAP system,
So Client, UserName, Password are for SAP system(Backend) you are creating JCO for.
Secondly, About the error u r getting,
Error says " failed to create a new JCo Connection Test_Meta_Data"
that means the SLD user has not sufficient authorization to create JCO.
In Visual Administrator, in SLD Data Supplier
You would have given SLD connection settings, there you have to give the user which has sufficient authorization(Admin authorizations) to create JCO connection..
Check the current user given in SLD Data Supplier.
Hopefully your problem will be solved.
Regards
Deepak

Run Time JCo Creation

Hi All,
 I have to create JCO at runtime. Based on the SAP client ID, user id,password and system number i have to create JCO. Predefined JCO configuration for a client number thru Portal, is not useful, because i don't know how many users will logon at a time? So, i wish to create JCO based on the user inputs at run time.
I used the following code to create JCO at runtime.
try {
 mConnection = JCO.createClient("sapclient",
 "userid","password",lanuage,"appserver name", "system number");
mConnection.connect();
}catch (Exception ex) { ex.printStackTrace();
 System.exit(1); }
After creating, i got all information like(username,appserver name,system number, etc.)
At this stage i got JCo connection name like 'mConnection'. My question is how to move to next step using mConnection?.
The JcoConnection contains some methods like mConnection.execute(parameter).
1. Is it possible to execute BAPI using JcoConnection created at runtime?
2. How to execute BAPI using JcoConnection created at runtime?
3. Is it necessary to create a model through the wizard in NWDS?
4. If i use execute() method, what are the parameters to be given?
Please help me.
Kind Regards,
S.Saravanan.
Message was edited by: Saravanan S
Message was edited by: Saravanan S

Saravanan,
Refer
1.<a href="http://help.sap.com/saphelp_nw2004s/helpdata/en/6a/14e13d8ee4535ee10000000a114084/frameset.htm">Table Manipulation</a>
2.<a href="http://help.sap.com/saphelp_nw2004s/helpdata/en/6a/14e13d8ee4535ee10000000a114084/frameset.htm">Example Program</a>.
These two links should answer all your queries.
Good Luck,
Bala

JCo creation for multiple backend systems

Hi Experts,
    I have an application in which i am using two different backend systems. I have used three RFCs in my application, in which two RFCs are referring same backend system while 3rd RFC is pointing to another backend system .
    Now my doubt is, Is it possible to use a single JCo connection for this application ...?
    OR if i use 2 or 3 JCos then which one will give better performance...?
Thanks in advance,
   JP

Hi One Jco connection to one R/3 System gives more performance.
even end users increases also we can maintain based on configurations(by increasing connection pool)
https://www.sdn.sap.com/irj/scn/wiki?path=/display/wdjava/faq%252b-%252bmodels%252b-%252badaptive%252brfc
Re: JCO Performance /Load
Thanks,
Tulasi
Edited by: Tulasi Palnati on Jan 25, 2009 11:47 AM

Model and Metadata in JCO creation

Hi all,
I am having dout regarding Modeldata and Metadata.For example i am having 2 function modules.Is it that the name given to the fields " Default logical name for model instances " and
"Default logical name for metadata instances " should be same for both the function modules as WD_BAPI_MODELDATA_DEST and WD_BAPI_RFC_MODELDATA_DEST so that JCO connection created for the above 2 names can be used for all the function modules
Regards
Padma N

Hi Chaitanya,
For example i want to work with 5 function modules in my application.So while creating model i used model data and metadata as
Modeldata Name : WD_BAPI_MODELDATA_DEST
MetaData : WD_BAPI_RFC_MODELDATA_DEST
and i selcted all the 5 function modules and i clicked finish.
If i delpoy the application now and tried to create JCO connection the above 2 names are visible with red button besides them.
If i create JCO connection for the above model and metaData instances will the 5 function modules will work fine or not
Regards
Padma N

Regarding JCO Creation

Hi,
We were trying to create JCO in a newly installed system and for a super admin user it was saying no authorization. So we just logged into Visual Administrator and added the user to Administrator group using Securoty Providers services. Now I am able to view the JCO list , but cannot create a new one or edit the existing one ( it is in display mode). Also when we tried the same thing using J2EE_Admin, the same thing happens. Even the logs saying Access denied,
Your suggession on this is highly appreciated
Kind Regards,
Vivek.

Hi,
Make sure that you have properly configure SLD and connection test to SLD should be successfull.
Thanks,
Akram

How to create a model and JCO connection

Hi all,
The Userid and Password given while creating new model at Singleserver/Load balancing tab should be same as the userid and password given while creating JCO connection. i.e in JCO creation while mapping modeldata to Application data and Metadata to metadata we will give some userid and password.
will those 2 userids and passwords should be same.
the error which i am getting is
com.sap.tc.webdynpro.modelimpl.dynamicrfc.WDDynamicRFCExecuteException: Error connecting using JCO.Client: null
Regards
Padma N

2 userids and passwords need not be same
i got similar problem and this is how i resolved
this is because jco connections are Using SSO and the user who is accessing that webdynpro application is not present in the backend system.
please make sure user is there in the backend system from which you are getting data
xxxxxxxxxxxxxxxxxxxxx
Edited by: Armin Reichert on Feb 18, 2008 7:26 PM

JCo creation

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