--- In Firebird-Java@yahoogroups.com, Mark Rotteveel <mark@...> wrote:

>
> On 7-3-2013 20:34, hugo.larson wrote:
> > Hello,
> > I'm not using iscSeekBlob or iscBlobInfo.
>
> If you are using Blobs, then iscBlobInfo most likely is getting used
> (iscSeekBlob depends on how you use blobs).
>
> > The problem can't be related to network issues since it happens on localhost.
> > I think that JBuilder DataExpress does not like that different threads execute statements simultaneously with same connections but that usually (I think) throws an exception "Resultset is already closed".
> > I don't think I do that but will do some logging to exclude the possibility.
>
> On localhost it likely isn't a network problem. The only reasons would
> be that the Firebird server closes connections for some reason (this
> would include Jaybird misbehaving), or you have a firewall or
> virusscanner that allows connections, but only closes a port if it
> generates too much traffic, but if that would be the cause, then I would
> expect this to be a much more frequent occurrence.
>
> What connection properties are you using?
>
> Mark
> --
> Mark Rotteveel
>

Hello Mark,
Sorry i missed this post.

> virusscanner

We have seen this problem on machines that do not have virusscanner installed.

> What connection properties are you using?

Connection properties: (problem existed before these new props)
"connectTimeout", "3"
"columnLabelForName", "true"

I have now logging which logs every database query. No problem with threads that use same database connection.

I have furthermore noticed this. Normally when a client cant access database which is a remote computer the following exception is thrown:
com.borland.dx.dataset.DataSetException:
GDS Exception. 335544721. Unable to complete network request to host "KASSA1".

But I have same exception thrown on computer which try to access remote database but with empty host, same as localhost:
com.borland.dx.dataset.DataSetException: GDS Exception. 335544721. Unable to complete network request to host "".

Regards,