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"Database context does not exist or is invalid"

Created by: DrewBul at: 3/25/2009 12:21 PM (17 Replies)

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3/25/2009 12:21 PM	Rate (0)
DrewBul Posts: 6 Rating: (0)	The project has been working for more than 18 months and now says "Database context does not exist or is invalid". I have read all the topics in this forum with "Database context does not exist or is invalid" key words and found no solution. Network card drivers and the network in general is healthy, no other Simatic software but WinCC 6.2 SP2 is installed, security rights not changed (admin). Moreover - I have restored the good tested image of the sytem partition, so the problem is not in the OS or WinCC, but in the project (or hardware, which is not likely - all tests say OK). I have also restored a backup copy of the WinCC project and it is running OK. But I would like to recover the archive database (alarms, trends). Simply copying ArchiveManager folder gives no result. Also tried to "Save as" the old project with "Project duplicator". Copied OK, activates OK, but also no archives. Please advise how I could copy and attach the archive database from the old project to the new one. The WinCC RT license 1024 tags is OK.
DrewBul Posts: 6 Rating: (0)	Last edited by: DrewBul at: 4/2/2009 11:23 AM Last edited by: Blue Moderator at: 25.03.2009 23:40 Splitted and renamed thread Last edited by: DrewBul at: 3/25/2009 12:24 PM
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3/26/2009 9:13 AM	Rate (0)
cumulus Platinum Member Joined: 9/27/2007 Last visit: 12/18/2020 Posts: 993 Rating: (102)	Hi Take a lock to this FAQ http://support.automation.siemens.com/WW/view/en/24435650 regards cumulus
	Learn more about visualization - visit the HMI courses of Siemens AG! siemens.com/sitrain Basic course WinCC (TIA Portal) machine-based https://support.industry.siemens.com/cs/ww/en/view/109758624 Advanced course WinCC (TIA Portal) machine-based https://support.industry.siemens.com/cs/ww/en/view/109758626 Basic course WinCC Professional https://support.industry.siemens.com/cs/ww/en/view/109758618 Basic course SiVArc (Auto. Generation of HMIs) https://support.industry.siemens.com/cs/ww/en/view/109758628 Basic course Energy Suite https://support.industry.siemens.com/cs/ww/en/view/109755577
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4/2/2009 12:19 PM	Rate (0)
DrewBul Posts: 6 Rating: (0)	I didn't find anything there. That FAQ seems to be rather about WinCC Flexible.
DrewBul Posts: 6 Rating: (0)
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4/2/2009 6:31 PM	Rate (3)
uel123 Gold Member Joined: 1/29/2006 Last visit: 9/26/2023 Posts: 440 Rating: (64)	Hi, DrewBull! Maybe this won´t be a direct answer to your question, but I can describe you my experience with similar situation, which I have succesfully resolved with help of Siemens Support! I have had some other malfunction (also after appr. 18 months of good operation,...), SCADA did not open, there was a system message Hresult Error 0x8004627: NULL,...... It turned out, that my runtime database of SCADA project became corrupted. Guys from Support adviced me following scenario(a Quote from Support): "Please, create a new wincc project with same project name (like original project) and copy the new created files "<projectname>RT.mdf" and "<projectname>RT.ldf" from new project to original project and try to open this project again. You will lose your runtime data by using this steps. Before you copy such a database file, please run the script "reset_wincc.vbs" by using "start-->run"" (end of quote) Of course, I was not very pleased with statement "You will lose your runtime data by using this steps", but I didn´t have any other option, as to proceed with that. But, afterwards, I managed to retrieve all archives (tags; messages were not needed..), with use of "Linking to the Archive Using the Tag Logging Editor" (see WinCC Helpsystem, "Linking, archive backup" in Index tab). (BTW: "Automatic Linking to an Archive", as described in Help, did not work for me.). So, If you have a working version of SCADA and only Archive data is missing, my advice to you is try to link your archives (if you have them) manually, as described in WinCC help system. Have fun! uel123

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This contribution was helpful to 2 thankful Users Khaled_Ezzat Damien_555

4/2/2009 7:28 PM	Rate (0)
DrewBul Posts: 6 Rating: (0)	This is a very good answer, thank you. I will try it and will report the results here.
DrewBul Posts: 6 Rating: (0)
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This contribution was helpful to 1 thankful Users oztunali

5/26/2014 7:51 AM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 7/12/2023 Posts: 10221 Rating: (1177)	I have almost the same. WInCC 7.2 Update7 Windows7 32 bits. New installation. No antivirus, no firewalls. Can not create a new project or open old!

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5/26/2014 8:36 AM	Rate (1)
SteBo Platinum Member Joined: 10/3/2010 Last visit: 9/6/2023 Posts: 1552 Rating: (184)	UMENCHO I have almost the same. WInCC 7.2 Update7 Windows7 32 bits. New installation. No antivirus, no firewalls. Can not create a new project or open old! I had a similar problem a few months ago but problem was due to the PC being installed in a domain. We had to reinstall WinCC and its updates after taking the PC out of the domain. Is it possible that this can be your issue too? http://cache.automation.siemens.com/dnl/DU/DUyMjQ2MzEA_78346833_Tools/78346833_WinCC_V7_Domain_en.pdf
	B r g d s , S t e B o SIMATIC HMI in Online Support Forum
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5/26/2014 11:52 AM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 7/12/2023 Posts: 10221 Rating: (1177)	Thanks Ste Bo, To be honest the PC was in domein. But on the same time I realized there ha sbeen installed another SQL server. Now I am removing the Servers, WinCC and will start again with installation. Will update the thread. Best regards, Hristo Mihalev

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This contribution was helpful to 1 thankful Users SteBo

5/26/2014 12:26 PM	Rate (0)
SteBo Platinum Member Joined: 10/3/2010 Last visit: 9/6/2023 Posts: 1552 Rating: (184)	UMENCHO Thanks Ste Bo, To be honest the PC was in domein. But on the same time I realized there ha sbeen installed another SQL server. Now I am removing the Servers, WinCC and will start again with installation. Will update the thread. Best regards, Hristo Mihalev Good luck with reinstallation, cya back in a few hours
	B r g d s , S t e B o SIMATIC HMI in Online Support Forum
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5/26/2014 12:57 PM	Rate (0)
Khaled_Ezzat Silver Member Joined: 9/7/2007 Last visit: 8/30/2023 Posts: 550 Rating: (61)	UMENCHO I have almost the same. WInCC 7.2 Update7 Windows7 32 bits. New installation. No antivirus, no firewalls. Can not create a new project or open old! HiUMENCHO Let me give you a tip that may solve your problem, just create new project or open a project on Drive "C" (WinCC Installation drive). This will probably fix your problem.
	Best Regards
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