NoClassDefFoundError:com/sap/tc/webdynpro/modelimpl/dynamicrfc/WDDynamicRFC

Question

Hi,
I get a really odd exception, my scenario is as follows.
WDJ DC "models" contains all my RFC models (1 api public part "api_pp")
WDJ DC "delegates" contains a pure-java (no WDJ components) abstraction layer (1 api_pp, 1 ***_pp) depends on models (api_pp)
J2EE server side library "lib/delegates" depends on delegates (***_pp)
WDJ DC "client" uses delegates (api_pp). WDJ runtime reference towards lib/delegates (defLib).
When I run the app in client, I get
java.lang.NoClassDefFoundError: com/sap/tc/webdynpro/modelimpl/dynamicrfc/WDDynamicRFCExecuteException
    at it.sap.fsh.formazione.<Client DC name here>(GestValComp.java:387)
    at it.sap.fsh.formazione.<Client DC name here>(GestValComp.java:220)
most likely, lib/delegates does not resolve this class.
I have tried to declare lib/delegates dependency from tc/wd/webdynpro (default) both runtime and buildtime (also separately).
Something weird happens: buildtime dependency does not resolve issue, runtime dep does not resolve issue AND makes the DC disappear from Visual Admin -> server -> services -> Classloader Viewer -> Libraries, where it is usually correctly listed.
I am studying also JA340... but without luck
Can anyone please help?
Thanks in advance,
Vincenzo

Answer 1

Hi Vincenzo,
I hope you have already created JCo destinations on the server for the RFCs imported in the 'models' Web Dynpro DC project.
If there is some change in backend RFC, then you will need to restart the server. You will have to re-import model in design time (in NWDS),
then do a DC Build & Deploy all the dependent DCs in the particular order and lastly DC Build, Deploy New Archive & Run your application.
Kind Regards,
Nitin
Edited by: Nitin Jain on Jan 6, 2009 9:09 AM