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Problems after upgrade from 7.0 to 7.4

Hello, We are in an upgrade proces from NW7.0 to 7.4. Because of this all our WebDynpro Java should be migrated to use on NW7.4 The automatic migration is gone well. The first problem (which is fixed) is that a need to change the location of our .porperties file. The issue i encouter now is, the RootApp should create a few components in runtime. We make use of the .createComponent of IWDComponentusage. When i start the app i get the following error:

java.lang.ClassNotFoundException: xx.yyyyyy.interfaces.meldingen.wdp.IExternalIMeldingenComp ------------------------- Loader Info ------------------------- ClassLoader name: [yyyyyy.xx/generiek~meldingen] Loader hash code: 29859cec Living status: alive Direct parent loaders: [system:Frame] [interface:webservices] [interface:cross] [interface:security] [interface:transactionext] [library:webservices_lib] [library:opensql] [library:jms] [library:ejb20] [service:p4] [service:ejb] [service:servlet_jsp] [library:tc~ddic~runtime~facade] [library:tc~bl~logging~api] [library:tc~cmi] [sap.com/tc~wd~api] [library:tc~bl~jco~api] [library:tc~bl~exception~lib] Resources: /usr/sap/OEL/J00/j2ee/cluster/apps/yyyyyy.xx/generiek~meldingen/servlet_jsp/webdynpro/resources/yyyyyy.xx/generiek~meldingen/root/WEB-INF/lib/overheid.xx~yyyyyy~meldingen.jar ---------------------------------------------------------------

I hope someone can give me some help. I don't have a clue at the moment (my Java experience isn't that good).

Thanks in advance. Maarten.

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1 Answer

  • Jan 13, 2015 at 06:11 PM

    Hi Maaten,

    This should be a popular issue.

    Please refer to other threads like

    BR, Tom

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    • Former Member

      Hello Tom,

      First off all, thx for your reply.

      As mentioned in my first post, i don't have much experience with Java. I read your mentioned thread and that doesn't ring a bell for me. The webdynpro which is running, is a webdynpro which is contains of several DC. As far as i know when we created this Web dynpro on 7.0 we didn't placed any external JAR'S in a separated DC.

      Hope for some more guidelines or tips to solve and understand my issue.

      Thanks in advance,

      Maarten.