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Thread What can cause application to Freeze
Thu, Aug 23 2007 9:10 PMPermanent Link

"Adam H."
Hi All,

I'm just looking at the moment for some brainstorming ideas on what could
cause an application to intermittently freeze whilst processing a query (or
set of queries within one TDBISamquery).

I'm not talking error messages - just freezing. (On both Local and
Client/Server mode). And not the whole computer, but just the Application.

I've thought of so far:

- Possible script in the progress event
- Network problem (although I'm not sure if this would cause freeze, or
error)
- Dodgy RAM/CPU/Hardware

I'm getting to the extent where I believe that there may be more than just
one problem (so isolating one or two things at a time may not get me to ever
find the solution), but thought that some people here might have some ideas
as to the cause they can throw at me.

Thanks & Regards

Adam.

Thu, Aug 23 2007 9:39 PMPermanent Link

"Robert"

"Adam H." <ahairsub4@rREMOVEMEspamSTOPPER.jvxp.com> wrote in message
news:D2E279D4-CF48-4AE7-8176-FE01017310C5@news.elevatesoft.com...
>
> - Possible script in the progress event

Do you have any user interaction during execution of the query?

Robert


Fri, Aug 24 2007 1:04 AMPermanent Link

"Adam H."
Hi Robert,

> Do you have any user interaction during execution of the query?

No - just the one thread. Any script in the progress event is simply showing
a progressbar for the user.

Cheers

Adam.

Fri, Aug 24 2007 3:51 AMPermanent Link

"Harry de Boer"
Adam,

We encountered some problems with AV software. Don't remember if there were
errors but is was a hell to figure that out.

Regards, Harry

"Adam H." <ahairsub4@rREMOVEMEspamSTOPPER.jvxp.com> schreef in bericht
news:D2E279D4-CF48-4AE7-8176-FE01017310C5@news.elevatesoft.com...
> Hi All,
>
> I'm just looking at the moment for some brainstorming ideas on what could
> cause an application to intermittently freeze whilst processing a query
(or
> set of queries within one TDBISamquery).
>
> I'm not talking error messages - just freezing. (On both Local and
> Client/Server mode). And not the whole computer, but just the Application.
>
> I've thought of so far:
>
>  - Possible script in the progress event
>  - Network problem (although I'm not sure if this would cause freeze, or
> error)
>  - Dodgy RAM/CPU/Hardware
>
> I'm getting to the extent where I believe that there may be more than just
> one problem (so isolating one or two things at a time may not get me to
ever
> find the solution), but thought that some people here might have some
ideas
> as to the cause they can throw at me.
>
> Thanks & Regards
>
> Adam.
>
>

Fri, Aug 24 2007 4:28 AMPermanent Link

Roy Lambert

NLH Associates

Team Elevate Team Elevate

Adam


I'm sort of going to go with Robert's comment. One problem I have had is where the z-order gets screwed and a dialog box is hidden behind the "active" form. Often means a reboot, and I've never figured out a way to determine if that's what's happened.

Roy Lambert
Fri, Aug 24 2007 5:44 AMPermanent Link

"Frans van Daalen"

"Adam H." <ahairsub4@rREMOVEMEspamSTOPPER.jvxp.com> wrote in message
news:D2E279D4-CF48-4AE7-8176-FE01017310C5@news.elevatesoft.com...
> Hi All,
>
> I'm just looking at the moment for some brainstorming ideas on what could
> cause an application to intermittently freeze whilst processing a query
> (or set of queries within one TDBISamquery).
>
> I'm not talking error messages - just freezing. (On both Local and
> Client/Server mode). And not the whole computer, but just the Application.
>
> I've thought of so far:
>
> - Possible script in the progress event
> - Network problem (although I'm not sure if this would cause freeze, or
> error)
> - Dodgy RAM/CPU/Hardware
>
> I'm getting to the extent where I believe that there may be more than just
> one problem (so isolating one or two things at a time may not get me to
> ever find the solution), but thought that some people here might have some
> ideas as to the cause they can throw at me.
>
> Thanks & Regards
>
> Adam.
Are you sue it is frozen? So if you open an other window like explorer and
run it over you program your programm form will not be repainted? If yes
then it is frozen, if not then there might be an message-dialog not
vissible. Using the alt-tab will bring this message-dialog to the front.

Fri, Aug 24 2007 6:10 PMPermanent Link

Tim Young [Elevate Software]

Elevate Software, Inc.

Avatar

Email timyoung@elevatesoft.com

Adam,

<< I'm not talking error messages - just freezing. (On both Local and
Client/Server mode). And not the whole computer, but just the Application.
>>

If it was just C/S, then I would say that you're probably running into the
ping issue just fixed in the latest build.   But for local, that's a whole
different issue.  So, the application stops using any CPU or anything ?

--
Tim Young
Elevate Software
www.elevatesoft.com

Sat, Aug 25 2007 4:16 AMPermanent Link

"Iztok Lajovic"
Adam,

a possible reason of freezing could be in exception trapper program if you
are using it.

I use Eurekalog which has an Anti-Freeze option. If this option is enabled
then Eurekalog detects that program is not active in terms of sending
messages to screen or requesting intervention from user more than defined
timeout seconds and raises an exception.

Iztok Lajovic


"Adam H." <ahairsub4@rREMOVEMEspamSTOPPER.jvxp.com> je napisal v sporočilo
news:D2E279D4-CF48-4AE7-8176-FE01017310C5@news.elevatesoft.com ...
> Hi All,
>
> I'm just looking at the moment for some brainstorming ideas on what could
> cause an application to intermittently freeze whilst processing a query
> (or set of queries within one TDBISamquery).
>
> I'm not talking error messages - just freezing. (On both Local and
> Client/Server mode). And not the whole computer, but just the Application.
>
> I've thought of so far:
>
> - Possible script in the progress event
> - Network problem (although I'm not sure if this would cause freeze, or
> error)
> - Dodgy RAM/CPU/Hardware
>
> I'm getting to the extent where I believe that there may be more than just
> one problem (so isolating one or two things at a time may not get me to
> ever find the solution), but thought that some people here might have some
> ideas as to the cause they can throw at me.
>
> Thanks & Regards
>
> Adam.
>

Sun, Aug 26 2007 8:27 PMPermanent Link

"Adam H."
Good Morning All,

Firstly - thanks for all your suggestions.

I've checked the Antivirus software, and believe that it's not causing a
problem, but thanks for the suggestion Harry!

Roy and Frans - thank you so much for your suggestions about z-order. I had
no idea about this isue at all until now! I have made modifications to my
applicaiton to turn off windows Ghosting, and will also instruct the user to
try opening another window, and moving it over, and away again to see what
happens. It may be that some error message is indeed showing behind the main
program. Will see how this goes.

Tim - thanks for your posing on the ping issue. I have turned Ping off in my
application for the time being (and also can't upgrade to the latest version
at present because of the Access Voilation issues). I've hit a dead end
trying to figure this out at the moment, and presently have resolved to
remain with Build 4.24. If I have ping turned off - is it still possible
that this issue could cause lockups on C/S, or is it only when ping is
turned on?

Iztok - thanks for the advise with Eurekalog. I may give this a shot too.

As previously mentioned - it is my current belief that their may be more
than just one issue here, so I'm trying to explore all avenues at once to
see if we can get the problem fixed, and then turn on each feature one by
one again, until we find the cause(s).

Thanks again for all your input!

Best Regards

Adam

Sun, Aug 26 2007 9:50 PMPermanent Link

"Adam H."
Hi All,

As a further update, it would appear as though the freeze is a complete
freeze. (The window will not repaint if another program is loaded over the
top, etc).

I'll keep trying as per previous message, and let you know. If anyone thinks
of any other possibilities - please feel free to fire away.  Smile

Best Regards

Adam.

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