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bugfixing delphi7 application with sql server 2005 - problem with win7

$100-500 USD

In Progress
Posted almost 12 years ago

$100-500 USD

Paid on delivery
Klankie is a software program with an educational keyboard with all phonetic symbols of the dutch language on this keyboard. By pressing a specific key on the keyboard, the software pronounces the phonetic and about 1400 words. The software is also adaptive, you can select specific phonetics for a user and the software only gives word with these characters. The software was made in Delphi 7, with a SQL7 database, back in 2003. The company who build the software does not exist anymore and the software source code is gone. However, in 2010 we managed to replace the SQL7 database for a SQL Server 2005 (or 2008) Express edition. A new setup was build. The new version now works as a network version as well. Originally the software worked fine only as a stand-alone application under W98SE, Win2000 and XP. **Problem:** The new SQL 2005 version works perfectly under XP clients, but in Vista and Windows 7 (all versions) the software seems to work fine, but suddenly, (sometimes in a couple of minutes, sometimes after about 30 minutes) the software hangs (cpu 99%) and you can only restart the pc. The freezing of the application is random but always when the user is typing in an "input field" in the software. I have tested a lot of things that could be the cause of the conflict so i can give you more detailed information of what has been tested properly already. Who knows the solution for this strange behaviour? I can give you the software so that you can see what happens after a while. If you think you have the solution or workaround for this issue, i will test it. I have more details about what has been checked already. The first coder who tackles this issue will be rewarded. ## Deliverables **What has been checked:** ? Problem only exists in Vista and Win7 ? The sudden freeze of the application is random, but only when you type a word (input field) ? It looks like the problem is occurring more when the sql server runs at another computer ? It does not matter if the SQL Server is 2005 or 2008, and it occurs stand-alone or when the SQL server runs at another PC. ? The problems still exists when you make an "Klankie"-instance on a existing SQL server 2005/2008. ? The problem still exists when you start the software as "admin" user and when you give all rights to the folder C:\Klankie ? It seems that the Windows Firewall is not the cause. Disabling the firewall does not fix the issue. Even when testing fully stand alone with no UTP cable the problem still remains. ? Under XP installation there is a regkey placed, under Vista or Windows 7 not. If you add this regkey the problem still exists. (detailed information about the regkey can be given) ? The problem still exists when running with the SQL Server Browser Service ? Several different schools and private customers with a stand-alone installation have already reported this bug, so it looks like it is not a problem in a specific domain structure or local pc or external-software conflict. The strange thing is that the software runs fine and fast, but suddenly will "hang". You cannot reproduce the freezing of the software, it looks random. ? I tried to find out if the Windows error reporting tool or the SQL Server reporting tool will give me some clues, but I found nothing, but I'm not an expert on this. ? In order to get the klankiesoftware run, the WinXP machine sometimes needs a win95-compatibility modus. So I tried different compatibilities, WinXP, Win2000. The Win2000 modus seems to make it more stable but the sudden freeze of the program still occurs. ? TCP/IP and named pipes are enabled. I tried with only Named Pipes but the problem still remains. **Possible solutions or workarounds:** ? Maybe the bug has something to do with the original programming for Windows 95/2000 and XP and now the difference with Vista and Windows7?However, the source code of the Delphi program is not available. I don't know if it's possible to run a Delphi-software-analyser-program in the background to report the possible error or cause? Maybe there is a windows 7 (and Vista) process on the local pc that conflicts at random times. ? Maybe the only option is to virtualize WinXP on the Windows7 client (Windows Vista is not important for me) and then run the software virtual on Windows XP. This has not been tested because I don't have enough experience with virtualizing. ? Another solution for the future could be that the complete software is working as cloudsoftware (or as a SaaS solution), so that the complete program is online. Then the software must be architected with scalable options, because much schools have to connect to their own (online) SQL instance. And the audio in the software must be fast enough for the end-user to work with. ? There are similar problems reported online by other Delphi7-applications with SQL software who have problems with running under Win7 and not under XP, so there may be a solution online or known by Microsoft or Delphi? Data to analyse this bug: ? I can give you the complete setup of the Klankie software and SQL 2005 installation, so that you can install this on a XP environment and Win7 pc. However, testing is very difficult. For every change each test will take more than 30 minutes or longer to test it, because of the random time-error. * * *This broadcast message was sent to all bidders on Wednesday Apr 4, 2012 7:28:41 PM: The software "klankie" with SQL 2005 can be downloaded at [login to view URL] please read the "read_me" instruction file before installing on your Win 7 pc.
Project ID: 2728198

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Active 12 yrs ago

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Flag of NETHERLANDS
Netherlands
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Member since Mar 18, 2009

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