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Application Crashing when calculating

I have a fairly intensive application build on MS Access 2003.  Often when the user is entering inforamtion, the CPU usage jumps to 100% and then the application crashes.  Their computer has 512MB RAM and plenty of open hard drive space.  Granted, the computer was fragmented pretty bad - 22% file frag. (which I'm cleaning up now), but I'm surprised that it would cause the application to fail.  

Also, I have gone into the code module and checked to break on all errors, yet it crashed witout breaking.

So I have two questions:
1.  Is it likely that fragmentation caused the application to crash
2.  Can I limit Access to only calculate when a command button is pushed, rather than continously calculating.  I have noticed that there is a calculation everytime a key is entered - even when type items into a memo box.

By the way - it NEVER crashes on my desktop (1 GB RAM).  So I don't think it's an application issue per se.

Thanks
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dewster1971
Asked:
dewster1971
1 Solution
 
rockiroadsCommented:
1. Doubt it, 22% isnt that bad
2. Yes, u can, whats the calculation?

I assume this is on a form, u may have a keypress event which keeps calculating
u could move that to the afterupdate event, so calculate only when value is changed
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dewster1971Author Commented:
Indeed after I cleaned up the fragmentation, I had the same problem.  It's not really a calculation that's occuring.  It seems to be happening when I type into a memo box.  This is occuring on a form and the event associated with the memo box is "on change".  You think this is the problem?

I will change that event to after update.
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dewster1971Author Commented:
That helped but I'm still getting to crash.
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rockiroadsCommented:
have u tried the usual compact/repair fix?

problem with adding into memo fields eh
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dewster1971Author Commented:
I compact on every close.  When changing the event to after update it seems to not be a problem when entering into a memo field, now I run into the problem when executing a command button.  I just compiled my code and don't know if that will help.  I also checked every other input box to make sure there are no more "on change" events.  I do have an "on load" event for this form.  Thought about changing that to on open, code is a requery for a specific form - probably don't need that one.

Any other suggestions?

And how do I stop the application from calculating until I tell it to?
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peter57rCommented:
Hi dewster1971,
>  event associated with the memo box is "on change".

Do you really need to use this event?  This will run after every keystroke.
Can you consider using the afterupdate or exit events?

Pete
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Chuck WoodCommented:
If it crashes on one computer and not another, I would suspect a corrupted Access file or Operating System file.

If nothing else fixes the problem, I would consider:
1. Uninstall and reinstall Access (or Office).
2. Rebuild the computer by reinstalling the Operating System and all your programs (don't forget to backup all your data first--and check the backup).
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clarkscottCommented:
Try deleting the memo box (and all associated code) and bring in a new one.  Sometimes funky things happen with controls and they seem to 'lose their mind'.   I've experienced strange things before and sometimes it's the only fix.

I've had entire forms act weird.... by deleting the form and starting over... all was well.

Scott C.
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dewster1971Author Commented:
I've done some more investigating by running the task manager while running through some inputs, and I found that every once in a while (usually when there is a pause in inputting),  msscript runs and hogs the memory.  I'm not familiar with the executable or if there is a way to minimize it's effect.

Tips, comments?

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rockiroadsCommented:
there obviously is some background task taking cpu time and like u say, hogging memory

why is MS Script running?

Well something is using that ocx

I saw this, perhaps it may help http://support.microsoft.com/?kbid=819897

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dewster1971Author Commented:
Thanks for everyone's help.  I will attribute the save to rockiroads for his "on change" suggestion - which helped a bit.  Looks like the bigger problem was the lack of Service Pack 2 on the users XP computer.  Once that was installed everything ran fine.
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rockiroadsCommented:
Thanks, and good to know, a simple SP would make such a change. For what you got, you wouldn't of thought so
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