on 06-21-2007 2:36 PM
Hi All,
I have integrated my webdynpro application in my portal , the application was working for quite some time all of a sudden it is giving the following error
Could not create JCOClientConnection for logical System: WD_SAP_MODELDATA_DESTINATION - Model: class com.allaind.us.model.customerModel. Please assure that you have configured the RFC connections and/or logical system name properly for this model!
What could be the reason.
Hi,
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
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<b>Hi
Check the Following URL and you may get some idea about what is Jco (Java Connector)
Building, Deploying, Configuring, and Running Your Application
http://help.sap.com/saphelp_nw04/helpdata/en/f8/bdfe80d9a3b048a5fb32a7d149774e/frameset.htm
Connectivity and Interoperability
http://help.sap.com/saphelp_nw04/helpdata/en/ed/89746bea5011d6b2e800508b6b8a93/frameset.htm
Creating a JCO.Function Object
http://help.sap.com/saphelp_nw04/helpdata/en/9f/44e13d82fcfb34e10000000a114084/frameset.htm
JCo Client Service
http://help.sap.com/saphelp_nw04/helpdata/en/40/003c41325fa831e10000000a1550b0/frameset.htm
Regards
Chandran</b>
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Hi Sapuser,
Through the following steps you can to see the whether you JCo s is configured or not and check the status of the JCO.
Step 1: Logon to the server: http://hostname:post/index.html
Step2 : Choose Web Dynpro
Step3 : Choose Content Administrator
Step4 : Select Maintain JCo Destinations button.
Or use the URL : http://hostname:port/webdynpro/dispatcher/sap.com/tcwdtools/Explorer
and then select Maintain JCo Destinations button.
Regards,
Mithu
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Hi,
It basically happens due to many open connections. Did your problem resolve..?
Thanks and Regards
Avijit
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The problem will surely be solved using the disconnectIfAlive() methode.
After each call to RFC, I also got this type of error and follows as written above and my problem was solved.... It basically happens due to many open connections
After each call of RFC use the disconnectIfAlive() mothod as written above and your problem will surely be resolved..
Please reward good points if it helps..
Thanks
Avijit
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Hi
Check the JCo Pool Configuration settings of your JCO Destination. This message normally comes when the maximum connections has been reached. Increase the "Maximum Connections" to some number depending on the usage. follow these steps.
1. Login to Content Administrator using Administrator rights.
http://localhost:50000/webdynpro/welcome/Welcome.jsp
2. click on content administrator.
3. Navigate under deployment content choose your project which you want to edit JCO connections and click on application.
other way is
Good to disconnect the jco connection after executing the same in your webdynpro code if you don't want it to be synchronous.
<ModelName>.modelInstance().disconnectIfAlive()
Check this thread too
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