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Hello! I'm doing some web services that use an embedded form of BD in db4o. When I make the request to a service any of the place, I create a static object ObjectServer for all services can use to access it, that is, the object instance in the form of BD Singleton. All services are functioning correctly if I go either locally or ...

Thanks a lot Goran! I added the Diagnostic... Configuration configuration = Db4o.newConfiguration();configuration.diagnostic().addListener(new DiagnosticToConsole());...and noticed a reference to db4o-6.4.38.10595-npopt.jar was missing. Now it works well. Manuel