Re: [Virtuoso-devel] Buffer exceptions using Jena/VirtGraph?

[Hugh W. <hwi...@op...>]

Hi Rune,

What is the version of the Virtuoso JDBC Driver you are using (java virtuoso.jdbc3.Driver) and Virtuoso server (virtuoso-t -?) ?

Also, can you please provide the output of running the "status()" command on the server to see what the status of the server is at this point.

Best Regards
Hugh Williams
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On 22 Feb 2013, at 09:52, Rune Stilling <run...@rd...> wrote:

> Hi
> 
> First I'm a bit confused by the different access methods to Virtuoso. Currently I (think) I'm using the Jena provider by using the VirtGraph class:
> 
> graph = new VirtGraph(repGraph, repURL, "xxx", "xxx");
> 
> First confusing is, that sometimes when I call this a lot I get the following exception:
> 
> Got com.hp.hpl.jena.shared.JenaException 'virtuoso.jdbc3.VirtuosoException: Connection failed: No buffer space available (maximum connections reached?): connect'
> 
> I'm closing the graph object after each call which I know is certainly inefficient, but not doing it has caused me troubles, because it seemed that the graph-object had some kind of timeout.
> 
> So what to do to avoid all these "buffer exceptions"?
> 
> Regards,
> Rune
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