Clipper - VDMnnnnn.TMP files ???

Author

VDMnnnnn.TMP files ???

Mel Smith

2005-02-04, 8:55 pm

Dear Friends,

My user seems to get a lot of VDM (Virtual DOS Machine) temporary files
populating my project \DBF directories, but only on his XP Pro machines and
lesser on his Win2K machines (none on the Win98SE computers)

When are they formed and why are they not deleted ?

After a few months we have *hundreds* of these .tmp 'crap' files laying
around :((

Anybody else have this problem ?

TIA,

-Mel Smith

Charles Foot

2005-02-04, 8:55 pm

Hi Mel,
these are formed when the app starts and deleted upon normal
termination. If the app crashes, or is still running when the machine is
shut down, these files are left there.

Mel Smith wrote:
> Dear Friends,
>
> My user seems to get a lot of VDM (Virtual DOS Machine) temporary files
> populating my project \DBF directories, but only on his XP Pro machines and
> lesser on his Win2K machines (none on the Win98SE computers)
>
> When are they formed and why are they not deleted ?
>
> After a few months we have *hundreds* of these .tmp 'crap' files laying
> around :((
>
> Anybody else have this problem ?
>
> TIA,
>
> -Mel Smith
>
>

Mel Smith

2005-02-05, 3:55 am

Charles,

Thank you. I'll notify the user to watch over his 20 or so people, and
to ensure that all my apps are shutdown properly.

-Mel Smith

Ross McKenzie

2005-02-05, 3:55 am

On Fri, 4 Feb 2005 18:08:33 -0700, "Mel Smith" <medsyntel@aol.com>
wrote:

>Charles,
>
> Thank you. I'll notify the user to watch over his 20 or so people, and
>to ensure that all my apps are shutdown properly.
>
>-Mel Smith
>
>
>

Hi Mel,

In case you have not heard of this technique before...

When my apps open they look for a particular text file, if not found
it creates one. On correct exit, the app deletes this text file. On
next startup, if the text file is found, the app squeals and screams
at the operator about not closing down correctly last time....they
learn fairly quickly after that.

Regards,

Ross McKenzie
ValuSoft
Melbourne Australia

valusoft AT optushome DOT com DOT au

Please consider a donation through the Red Cross to our friends affected by the tsunamis.

Igor Shinder

2005-02-05, 8:55 am

Hi Mel!
> Dear Friends,
>
> My user seems to get a lot of VDM (Virtual DOS Machine) temporary
files
> populating my project \DBF directories, but only on his XP Pro machines
and
> lesser on his Win2K machines (none on the Win98SE computers)
>
> When are they formed and why are they not deleted ?
>
> After a few months we have *hundreds* of these .tmp 'crap' files
laying
> around :((
>
> Anybody else have this problem ?
Yes. I'm do some tests and found what is happens. When app try to erase
already open file (so it must just do nothing) XP&2000 create this VDM*.tmp
file to inform self to do late erasing. Normally this temp files must be
erased by OS, but not always and not anywhere. Some our users report such
problems and we just solve it by following code:

#xtranslate FErase(<file> ) => safeFErase(<file> ) //include this in
every prg used FErase()

//func
Func safeFErase(fn)
Static blk:=NIL
Local r:=-1,h

If File(fn)
h:=FCreate(fn,0)
If h!=-1 //file is free
//
FClose(h)

If blk==NIL
blk:="{|fn| FE"
blk+="rase(fn)}"
blk:=&blk.
End

r:=Eval(blk,fn) //FErase(fn)
End
End

Return r

--
Eka Muratova,
www.eleussoft.narod.ru

check our software:
> smartGC: addon tool to speedup garbage collector
> XFuncs: easy extend your app with script functions

Markus Wiederstein

2005-02-05, 8:55 am

Mel,

if your client is running netware -> be sure to use a netware client 4.83
SP2 or later,
this VDM Temp is a known issue.

cu
Markus

Am Fri, 4 Feb 2005 18:08:33 -0700 hat Mel Smith <medsyntel@aol.com>
geschrieben:

> Charles,
>
> Thank you. I'll notify the user to watch over his 20 or so people,
> and
> to ensure that all my apps are shutdown properly.
>
> -Mel Smith
>
>
>

--
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/

Markus Wiederstein

2005-02-05, 8:55 am

Mel, read this!

Novell Document ID: 10074919
http://support.novell.com/cgi-bin/s...i?/10074919.htm
"After installing the Novell Client v4.83 SP1, when running 16-bit
applications residing on a Novell NetWare volume ..., a number of zero
byte .tmp files (named VDM##.tmp ...) get created, but not deleted.
When the program is installed on a local drive, the problem does not
exist."

Cheers Markus

Am Fri, 4 Feb 2005 15:03:23 -0700 hat Mel Smith <medsyntel@aol.com>
geschrieben:

> Dear Friends,
>
> My user seems to get a lot of VDM (Virtual DOS Machine) temporary
> files
> populating my project \DBF directories, but only on his XP Pro machines
> and
> lesser on his Win2K machines (none on the Win98SE computers)
>
> When are they formed and why are they not deleted ?
>
> After a few months we have *hundreds* of these .tmp 'crap' files
> laying
> around :((
>
> Anybody else have this problem ?
>
> TIA,
>
> -Mel Smith
>
>

--
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/

Mel Smith

2005-02-05, 3:55 pm

Ross,
That's a good idea !!

"Ross McKenzie" <NoJunk_valusoft@optushome.com.au> wrote in message
news:42044a75.11953218@news...
> On Fri, 4 Feb 2005 18:08:33 -0700, "Mel Smith" <medsyntel@aol.com>
> wrote:
>
and[color=darkred]
>
> Hi Mel,
>
> In case you have not heard of this technique before...
>
> When my apps open they look for a particular text file, if not found
> it creates one. On correct exit, the app deletes this text file. On
> next startup, if the text file is found, the app squeals and screams
> at the operator about not closing down correctly last time....they
> learn fairly quickly after that.
>
>
> Regards,
>
> Ross McKenzie
> ValuSoft
> Melbourne Australia
>
> valusoft AT optushome DOT com DOT au
>
> Please consider a donation through the Red Cross to our friends affected
by the tsunamis.

Mel Smith

2005-02-05, 3:55 pm

Markus,

As I noted in an e-mail to you I forwarded your directions to my friend
in the north.

Thanks much !

-Mel Smith

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