1 Reply Latest reply: Jun 7, 2012 12:25 AM by 796392 RSS

    Singleton service is registered but not activated

    796392
      I have an ear application that is deployed to a cluster of 2 managed servers
      For some reason the singleton service is registered but is not activated in neither of the servers and I can't see it from the jndi tree
      <The Singleton Service HelloWorldSingleton is now registered on this server. This server may be chosen to host this service.>

      I used the same code to create a new ear application and the singleton was activated succesfully so this means that my cluster configuration is correct.

      What may prevent a singleton service from becoming activated?
      Can this be something that has to do with datasources or with adf-config.xml?
      I don't know where to look
        • 1. Re: Singleton service is registered but not activated
          796392
          Ok I found the answer to this.
          The problem was that inside the ear there was a MANIFEST.MF file (versioned application) which is not supported by the Singleton Service.
          The MANIFEST.MF was automatically added because of the jazn-data.xml (I really don't know why)
          If I delete the jazn-data.xml then the MANIFEST.MF is no longer added (Jdeveloper 11.1.1.4)