db4o Developer Community

db4o open source object database, native to Java and .NET
Welcome to db4o Developer Community Sign in | Join
in Search
More Search Options

Browse by Tags

All Tags » Java » exceptions   (RSS)
  • Re: NPE when starting Defrag

    Hi Graham and Carl, Thanks for your help so far. I now removed all the code that used the ObjectContainer and its Configuration object. I also rewrote my stored objects so that they now store time in a java.util.Date instead of Calendar. Still, I get an error, immediately after the defrag method is called:SEVERE: Failed to defragment db4o file: ...
    Posted to db4o User Forum (Forum) by Peter Schübel on October 22, 2008
  • NPE when starting Defrag

     Hi, I tried using the db4o defrag functionality on my database file, but sadly it failed. I can't make any sense from the exception. My log file looks like this: 06-Oct-2008 18:07:18 tvadb.database.Db4oFileDefrag openDatabaseINFO: Getting default db4o Configuration...06-Oct-2008 18:07:18 tvadb.database.Db4oFileDefrag openDatabaseINFO: ...
    Posted to db4o User Forum (Forum) by Peter Schübel on October 6, 2008
  • DatabaseReadOnlyException when querying remote database

    Hi, I've been evaluating db4o for a client-server environment for the last few weeks. I've been running into a few problems, but could solve most of them using the tutorial, the db4o reference or by looking up in the forum. But I now have an issue that may or may not be a bug, so I thought I'd ask directly for some advice. Of course it could very ...
    Posted to db4o User Forum (Forum) by Peter Schübel on September 2, 2008
  • What permissions does db4o need in policy file?

    I tried it with  permission java.util.PropertyPermission ''java.fullversion'', ''read''; permission java.io.FilePermission ''/path/to/database/*'', ''read, write'';  but then I get a DatabaseFileLockedException with permission java.security.AllPermission; it works of course... 
    Posted to db4o User Forum (Forum) by elkmann on April 11, 2008