db4o Developer Community

Ok, either i've found a bug or something is eluding me regarding events. I'm working with 7.4 in java but had the same issue in 6.2...             ObjectServer objectServer = Db4o.openServer(IServerConfiguration.FILE, IServerConfiguration.PORT);        ObjectContainer ...

Hi all  i have a remote server and i want to access it by it's IP address. my code is like thisObjectContainer db=Db4o.openClient(''192.168.0.10'',1212,''admin'',''123456''); unfortunately my program wait in that line for ever. i try to work with it in local server computer with host name ''localhost'' and everything is ...

Edwin, Thanks for your reply and suggestions. I will look more closely in the reference documents... I also tried to incorporate your Configuration suggestions. My server code now reads:             Configuration config = Db4o.newConfiguration();           ...

A couple of days after I posted this, http://developer.db4o.com/forums/thread/42098.aspx, it seems that the server is just taking all cpu when clients die unexpectedly. So, is db4o c/s just unusable in production environments?

Hello,   Sorry for the new thread, but the first one I posted became somewhat unclear. In client-server mode, it seems that CPU is going to 100% on the server thread when some client exits without closing its connection. I think, if this is right, that it is a very annoying problem, as this is something that always could happen ...

Hello, Today, I tried the networked client-server db4o flavour. It seems to work great for most things, but one: when my (swing) client is closed, cpu usage is going to 100% (or 50%, dual core) :-( . It isn't the case when the client is running, everything seems to work as planned. If, on the server, I do a ...

Okay, I finally figured out what the problem was with my NQ in Client/Server.  It basically came down to the anonymous inner class and how DB4O sends the query over the network to the server.  It wasn't able to serialize it correctly, so the query didn't work.  I moved my Predicates out of the dao class and into their own.  ...

Daniel Ferreira Jorge: Is db4o reliable to be used in a website with this much concurrent users? Certainly. It's a question of architecture. If you're dealing with a sustained load of > 1 request per second, then you really need to be thinking about what alternatives you can take to make your environment scale by leaps ...

After one week I'm back to work. But I still don't know how to solve my problem. I would appreciate it, if someone could provide some demo code. Thanks in advance.