[Gvsig_english] unable to open an existing project

[Benjamin Ducke]

File corruption is not the same as performance issues.

The project file should ALWAYS be written correctly, no matter how many
other processes are running in parallel on your system.
The file corruption you have encountered is a serious bug and needs to
be corrected. For that to happen, we need to establish exactly under
which circumstances it occurs.

There should be no relation between the "amount of data" and the time
it takes to save a project file. The data itself is not saved in the
project file, only references to the data sources. So unless you have
a massive number of layers in your project, there should be no problem.
In my case, gvSIG has never taken more than a few seconds to save
a project file, even with massively large datasets.

If gvSIG gets too slow to reasonably handle your project, then you need
to upgrade your system with more RAM and faster hard disks.
Another way to boost performance is by upgrading the Java VM gvSIG
uses to 1.6 Update 7.

Ben


christian Brandt wrote:
> Dear list,
> 
> you're right that the file is empty but the question is why the file got 
> empty.
> 
> Sometimes gvsig takes very very long time to save a project (of course 
> also depending on the data quantity within the project), so if gvsig 
> stocks e.g. due to other applications with higher volume (or priority) 
> you have two possibilities: either finishing other applications and 
> waiting (maybe 5 minutes but maybe also half an hour) just in hope that 
> gvsig comes back or to stop gvsig by task manager. The last <hard> 
> option seems to produce those empty gvsig files as I've learned now (how 
> can this happen!?).
> 
> As we know that any computer system can stock anytime a backup system is 
> absolutly necessary.  So far I didn't find a note within the manual 
> about backups.
> Advanced gvsig user will know to make backup copies from their projects, 
> but beginners will get badly surprised. Hence until the planned backup 
> system starts there should be an appropriate note within the manual or 
> on gvsig download page.
> 
> Regards
> 
> Christian
> 
>  > Date: Mon, 6 Oct 2008 14:00:01 +0100
>  > From: benjamin.ducke at oxfordarch.co.uk
>  > To: gvsig_internacional at runas.cap.gva.es
>  > Subject: Re: [Gvsig_english] unable to open an existing project
>  >
>  > I have had this problem before. There is a rare condition where gvSIG
>  > zero-bytes the project file. I reported this one before:
>  >
>  > ---
>  >
>  > When attempting to save a project, the Spanish error message:
>  > "Error guardando el proyecto" appears. This seems to happen when adding
>  > the same Shapefile as more than one layer. In my case, the .GVP project
>  > file got corrupted (zero'd) afterwards once!
>  >
>  > ---
>  >
>  > I have not quite been able to reconstruct the precise circumstances that
>  > led to this yet.
>  >
>  > Ben
>  >
>  > César Martínez Izquierdo wrote:
>  > > christian Brandt escribió:
>  > >> Dear list,
>  > >>
>  > >> attached is the gvp file but it seems that this file is damaged.
>  > >>
>  > >> Regards
>  > >>
>  > >> Christian
>  > >>
>  > >> P.S. Doesn't gvsig creates backup gvp files?
>  > >>
>  > >
>  > > Hello Christian,
>  > > it seems that attached project is emtpy (0kb file) :-(
>  > >
>  > > Regarding the gvSIG backups, there is something prepared for next
>  > > version. However, for the moment you'll have to backup projects by 
> hand.
>  > >
>  > > Greetings,
>  > >
>  >
>  >
>  > --
>  > Benjamin Ducke
>  > Senior Applications Support and Development Officer
>  >
>  > Oxford Archaeology Ltd
>  > Janus House
>  > Osney Mead
>  > OX2 0ES
>  > Oxford, U.K.
>  >
>  > Tel: +44 (0)1865 263 800 (switchboard)
>  > Tel: +44 (0)1865 980 758 (direct)
>  > Fax :+44 (0)1865 793 496
>  > benjamin.ducke at oxfordarch.co.uk
>  >
>  >
>  >
>  >
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-- 
Benjamin Ducke
Senior Applications Support and Development Officer

Oxford Archaeology Ltd
Janus House
Osney Mead
OX2 0ES
Oxford, U.K.

Tel: +44 (0)1865 263 800 (switchboard)
Tel: +44 (0)1865 980 758 (direct)
Fax :+44 (0)1865 793 496
benjamin.ducke at oxfordarch.co.uk




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Files attached to this email may be in ISO 26300 format (OASIS Open Document Format). If you have difficulty opening them, please visit http://iso26300.info for more information.