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All Tags » db4o 6.4 » db4o java   (RSS)
  • File format incompatible. Help please

    Hello. I have some problem with db file.I'm using db4o in my application written in Java.User which uses it broke db file. I know that he updated application (replaced .jar file).New version of app has the same version db4o and the same settings.What was the immediate cause of this problem I don't know. But I have assumption, that he replaced .jar ...
    Posted to db4o User Forum (Forum) by twin84 on November 22, 2008
  • Problems with embedded databases using Web Services with Axis.

    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 ...
    Posted to db4o User Forum (Forum) by dexes on October 20, 2008
  • Native Query optimization problems

    Hi there,   I am building an application running on db4o 6.4.38.10595 and Java 1.6.02 and I encounter problems regarding Native Query optimization. I added a DiagnosticToConsole-listener which gives me the following error message: :: db4o 6.4.38.10595 Diagnostics ::  Native query not present. :: Native Query Optimizer could not be ...
    Posted to db4o User Forum (Forum) by berlinermainzer on May 19, 2008
  • How to speed up query?

    Hi everyone, I am a newbie. I am trying to use db4o to replace Hsqldb which we are using. And my use case is very simple. The DB only needs to store one type of object -- Employee. class Employee {    // id     // name     // ... other fields } However, the query speed is very slow ...
    Posted to db4o User Forum (Forum) by tetsu on March 27, 2008