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PostPosted: Wed Jan 09, 2013 12:55 am 
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Joined: Thu Mar 16, 2006 12:15 pm
Posts: 184
I get this problem when trying to catch new data from IB... but I can run backtests...

and if I delet the files mentionend in the following link, I can capture new data without problem, but the old data are lost...
viewtopic.php?f=60&t=8531&hilit=System.ArgumentOutOfRangeException

Any solution for this?

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PostPosted: Wed Jan 09, 2013 11:20 am 
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Joined: Thu Jul 17, 2003 10:39 am
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Hi,

As described in that topic, this error means that the database is corrupted. We have no a recovery tool for it, and we recommend to make backups periodically.

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PostPosted: Wed Jan 09, 2013 12:04 pm 
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Joined: Thu Mar 16, 2006 12:15 pm
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That is a pitty... How to do backups most efficiently? (I am a single trader and do not plan to use additional software like Quantbase)

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PostPosted: Wed Jan 09, 2013 12:20 pm 
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Joined: Thu Jul 17, 2003 10:39 am
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Hi,

There is Database Manager utility in OpenQuant installation. It allows to backup/restore databases (instruments, portfolios, orders and historical data). Start menu->Programs->SmartQuant Ltd->OpenQuant->Tools

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