HELP - Exception creating or maintaining Jco Destinatination

Hi,
After system copy we tried to change the jco destinations
WD_OS_MODELDATA_DEST and WD_OS_RFC_METADATA_DEST by
Web Dynpro Content Administrator" Admin", but it failed.
Now the system show,
500 Internal Server Error - Failed to process request. Please contact
your system administrator
java.lang.NullPointerException
     at com.sap.tc.webdynpro.serverimpl.wdc.sl.SystemLandscapeFactory.checkStatus(SystemLandscapeFactory.java:997)
     at com.sap.tc.webdynpro.services.sal.sl.api.WDSystemLandscape.checkStatus(WDSystemLandscape.java:485)
     at com.sap.tc.webdynpro.tools.explorer.JCOConnectionsDetails.updateJCOClientStatus(JCOConnectionsDetails.java:494)
     at com.sap.tc.webdynpro.tools.explorer.JCOConnectionsDetails.addJCOClientToList(JCOConnectionsDetails.java:711)
     at com.sap.tc.webdynpro.tools.explorer.JCOConnectionsDetails.addJCOClientToList(JCOConnectionsDetails.java:675)
     at com.sap.tc.webdynpro.tools.explorer.JCOConnectionsDetails.wdDoInit(JCOConnectionsDetails.java:122)
     at com.sap.tc.webdynpro.tools.explorer.wdp.InternalJCOConnectionsDetails.wdDoInit(InternalJCOConnectionsDetails.java:259)
     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:275)
     at com.sap.tc.webdynpro.progmodel.controller.Controller.init(Controller.java:200)
     at com.sap.tc.webdynpro.progmodel.view.ViewManager.getView(ViewManager.java:539)
     at com.sap.tc.webdynpro.progmodel.view.ViewManager.bind(ViewManager.java:397)
     at com.sap.tc.webdynpro.progmodel.view.ViewManager.makeVisible(ViewManager.java:619)
     at com.sap.tc.webdynpro.progmodel.view.ViewManager.performNavigation(ViewManager.java:262)
     at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.navigate(ClientApplication.java:819)
     at com.sap.tc.webdynpro.clientserver.task.WebDynproMainTask.handleActionEvent(WebDynproMainTask.java:359)
     at com.sap.tc.webdynpro.clientserver.task.WebDynproMainTask.execute(WebDynproMainTask.java:659)
     at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:59)
     at com.sap.tc.webdynpro.clientserver.cal.ClientManager.doProcessing(ClientManager.java:251)
     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)
thanks in advance
Diana

Thanks,
The solution was filling all fields of Jco connection by Sld-content maintenance -
landscape definition - Class JCO message server destination & JCO application server destination.

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Cannot create/maintain JCO connection : NullPointerException in SLD

When I want to create a new JCO connection in SLD (via WebDynpro->Content Administrator) , I get an exception :
java.lang.NullPointerException
     at com.sap.tc.webdynpro.serverimpl.wdc.sl.SystemLandscapeFactory.checkStatus(SystemLandscapeFactory.java:991)
     at com.sap.tc.webdynpro.services.sal.sl.api.WDSystemLandscape.checkStatus(WDSystemLandscape.java:469)
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Because the following document "[Adaptive RFC Troubleshooting Guide|https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/d0019b1a-775f-2910-beb8-d81f27d0d8d0]" suggests that the problem could be an incomplete JCO connection definition, I removed all other existing connections (it's a sandbox system), but this action has not solved the problem.
I also get the message "Exception while getting JCo Clients Failed to get list of defined JCO clients for deployable object 'sap.com/spider_search' " when the Content Administrator screen is displayed.
Any idea of what is missing ?
Thanks,
Eric.

Hi Eric,
Check this forum link using this similar problem got resolved.
can not create jco destination 500   Internal Server Error after sp 13
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Anup

Help needed with message: "Exception creating new Poolable object"

In r12.1.3 EBS users occasionally instead of getting the login screen will see the following message *"Unable to generate forwarding URL. Exception: oracle.apps.fnd.common.AppsException: oracle.apps.fnd.common.PoolException: Exception creating new Poolable object"* Restarting the applications usually resolves the issue but it happens so infrequently that we've been unable to diagnose the problem or recreate the problem at will.
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We've logged an SR with Oracle Support and they recommended turning on OC4J Debugging which they advised would create large log files. Since we can replicate this issue at will we would like to avoid turning on debugging and creating the large log files.

user6035136 wrote:
In r12.1.3 EBS users occasionally instead of getting the login screen will see the following message *"Unable to generate forwarding URL. Exception: oracle.apps.fnd.common.AppsException: oracle.apps.fnd.common.PoolException: Exception creating new Poolable object"* Restarting the applications usually resolves the issue but it happens so infrequently that we've been unable to diagnose the problem or recreate the problem at will.
Any assistance would be greatly be appreciated in diagnosing the problem.
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Please also see these docs.
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Maintain JCO Destination Issue

Hi ,
I have configured SLD and maintained JCO destination WD_MODELDATA_DEST and WD_MODELDATA_DEST with SAP backend connection details.
When i tried to create the JCO desitnation , i m getting the following issues:
JCo destination 'RFC_MODEL' was successfully created in SLD.
Exception while getting JCo Clients Failed to get list of defined JCO clients for deployable object 'sap.com/cafeugpcroomwd'.
Exception while getting the JCo clients Failed to get list of defined JCO clients for deployable object 'sap.com/cafeugpcroomwd'.
Exception while getting the JCo clients Failed to get list of defined JCO clients for deployable object 'sap.com/cafeueruico~km'.
Exception while getting JCo Clients Failed to get list of defined JCO clients for deployable object 'sap.com/cafeugpcroomwd'.
when i try to test the connection, i m having the following issue.
com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=op60vimt75 GROUP=SPACE R3NAME=T75 MSSERV=sapmsT75 PCS=1 ERROR service 'sapmsT75' unknown TIME Sat Apr 17 03:32:23 2010 RELEASE 700 COMPONENT NI (network interface) VERSION 38 RC -3 MODULE nixxhsl.cpp LINE 776 DETAIL NiHsLGetServNo: service name cached as unknown COUNTER 1
Can somebody help me out what went wrong or let me know changes i have to do ?
your help is appreciated!!!
Regards,
Ravi.
Edited by: ravikanth kasim on Apr 17, 2010 9:45 AM

Hi Ravi,
Please refer to below document for jco errors
[Troubleshooting SAP Java Connector |http://wiki.sdn.sap.com/wiki/display/EP/TroubleshootingSAPJavaConnector(JCo)]
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/d0019b1a-775f-2910-beb8-d81f27d0d8d0?quicklink=index&overridelayout=true
Creating JCO Connectivity from J2EE to SAP
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Maintaining JCO destinations

HI experts,
We are using a standard sdn example for flight booking . We have downloaded zip file from sdn. We did all the steps to build the project in the netweaver studio help. After deployment we are not able to maintain JCO destinations. The error is " Unable to obtain JCO destinations and it a system landscape exception". We tried to create our own JCO destinations but the same.

Hi,
Login to http://host:port/index.html
Go to Webdynpro -> Content Administrator. Click on 'Maintain JCo Destinations'.
The JCo connections you have created should be in green colour. If so, try to test the two connections (meta and model data) first. If both are successful, then ping them and check. If it works, then check from the project if you are using the right JCo connectors. If everything is fine, then it should work.
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Harini S

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Can anyone help in installing the SAP Jco successfully.
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Hi venkatesh,
To create JCO follow the procedure.
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1.      Define general data
2.      Define the J2EE cluster
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Please follow the link for more information.
http://help.sap.com/saphelp_nw04/helpdata/EN/3a/3b1b40fcdd8f5ce10000000a155106/content.htm
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Exception thrown while using JCo in Java agents in Lotus Domino applns.

I am trying to use JCo in Java agents in a lotus domino application. Here is my code:(This Java agent calls a Remote enabled function module in SAP which gives the sum of two given numbers)
import lotus.domino.*;
import java.util.*;
import java.io.*;
import com.sap.mw.jco.*;
public class JavaAgent extends AgentBase
private static JCO.Client jClient;
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                    System.out.println("POOL NAMES["+ poolIter "] ========>>"poolNames[poolIter]);
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               String JCOClient = "111";
               String user = "apabap4";
               String password = "sap123";
               String language = "en";
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               JCO.addClientPool(poolName,maxConnections,JCOClient,user,password,language,ashost,sysnr);
          //     JCO.createClient(JCOClient, user,password,language, "172.25.10.68");
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           catch(JCO.Exception jcoe)
                throw new JCO.Exception(jcoe.getGroup(),jcoe.getKey(),"Error in client pool creation "+jcoe.toString());
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      try
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     catch(JCO.Exception jcoe2)
               throw new JCO.Exception(jcoe2.getGroup(),jcoe2.getKey(),"Error in releasing client "+jcoe2.toString());
public void NotesMain()
          try {
               Session session = getSession();
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              Document doc = agentContext.getDocumentContext();
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catch(IOException ioe)
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catch(JCO.Exception jcoe1)
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               e.printStackTrace();
While executing this agent I am getting the following exception.
08/25/2004 06:27:45 PM HTTP JVM: java.lang.ExceptionInInitializerError: JCO.classInitialize(): Could not load middleware layer 'com.sap.mw.jco.rfc.MiddlewareRFC' Native Library C:\Lotus\Domino\sapjcorfc.dll already loaded in another classloader
08/25/2004 06:27:45 PM HTTP JVM: at com.sap.mw.jco.JCO.<clinit>(Unknown Source)
08/25/2004 06:27:45 PM HTTP JVM: at JCoCallTrans.getJCOClient(JCoCallTrans.java:42)
08/25/2004 06:27:45 PM HTTP JVM: at JCoCallTrans.NotesMain(JCoCallTrans.java:88)
08/25/2004 06:27:45 PM HTTP JVM: at lotus.domino.AgentBase.runNotes(Unknown Source)
08/25/2004 06:27:45 PM HTTP JVM: at lotus.domino.NotesThread.run(NotesThread.java:208)
08/25/2004 06:27:45 PM HTTP JVM: Error cleaning up agent threads
Also I have placed the jco.jar in lib of jvm in Domino directory i.e.,
Lotus\Domino\jvm\lib and
sapjcorfc.dll and librfc32.dll in system32 of WINNT folder.
Kindly help me to rectify this problem
Arokiaraj.S

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>
plz i need a help to create a trigger
>
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>
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I call ARFC2 setting WD_MODELDATA_DEST and WD_RFC_METADATA_DEST.
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com.sap.conn.jco.JCoException: (106) JCO_ERROR_RESOURCE: Destination WD_RFC_METADATA_DEST does not exist
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I wnat to Maintain the demo01's JCo Destinations, but the page is null.
Where can I create WD_MODELDATA_DEST、WD_RFC_METADATA_DEST.
thx.

Hi BenChen,
You need to create JCO Destination in the SAP Portal >> Content Administration >> Web dynpro >> Maintain Jco Destinations.
If "Create" button not active,then you need to check SLD running or not and SLD data supplier.
Please refer to below documents will helps
[System Landscape Directory Process and JCo Configuration|http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/c0c1d495-048e-2b10-babd-924a136f56b5?quicklink=index&overridelayout=true]
[JCO Destination Errors|http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/d0019b1a-775f-2910-beb8-d81f27d0d8d0?quicklink=index&overridelayout=true]
[How to Configure the JCo Destination Settings|https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/user-interface-technology/wd%20java/7.0/portal%20integration/how%20to%20configure%20the%20jco%20destination%20settings.pdf]
Hope it will helps
Regards
Arun Jaiswal

Custom transaction has to be created to maintain the custom table

My requirement is like this:
We have received the request to create a special transaction to maintain directly the table ZZRPPT_SUBCONPRI (Subcontracting price table).
Currently the table is accessed through transcation code SM30. Access to this t/code is limited due to the security reasons.
So new transaction has to be created to maintain this table.
Could you please suggest in this?
US

Hi Srinivas,
You can create a program and in that you can call the table with the specificied restrictions.
Maintain the transaction code for that program.
Assigning the table
z_view = 'ZZRPPT_SUBCONPRI '.
For the restriction
REFRESH z_funct.
CLEAR z_funct.
z_funct-function = 'ATAB'.
APPEND z_funct.
Lock the table
CALL FUNCTION 'VIEW_ENQUEUE'
EXPORTING
    action    = 'E' "E for Lock
    view_name = z_view.
Call SM30 transaction for 'ZZRPPT_SUBCONPRI'
CALL FUNCTION 'VIEW_MAINTENANCE_CALL'
EXPORTING
    action                       = z_action
    view_name                    = z_view
TABLES
    excl_cua_funct               = z_funct
EXCEPTIONS
    client_reference             = 1
    foreign_lock                 = 2
    invalid_action               = 3
    no_clientindependent_auth    = 4
    no_database_function         = 5
    no_editor_function           = 6
    no_show_auth                 = 7
    no_tvdir_entry               = 8
    no_upd_auth                  = 9
    only_show_allowed            = 10
    system_failure               = 11
    unknown_field_in_dba_sellist = 12
    view_not_found               = 13
    maintenance_prohibited       = 14
    OTHERS                       = 15.
Definately the above solution will work out, because i had implemented for many of my customized tables.
Reward points if helpful.
Kannu.

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