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Up Topic Rybka Support & Discussion / Aquarium / trees are empty??
- - By Boombaard (**) [nl] Date 2018-01-06 18:52
While working in Aquarium my PC suddenly restarted. After that, all my trees are empty!??
I tried 'restore tree', but after waiting for hours, nothing happened.
It would be a terrible loss if really all my trees are gone.

Can someone tell what to do please?
Parent - - By dickie (**) [gb] Date 2018-01-06 21:35
You should be able to restore your trees from the backups in ATrees\Backup, or failing that you could rebuild them using the project epd files in IDeA\Results.
Parent - - By Boombaard (**) [nl] Date 2018-01-06 22:28
Thank you for your answer!
Which file exactly do I need from the backups and how to handle it so I get my project refilled?
And/or how to rebuild a tree from the EPD-files?
Parent - - By dickie (**) [gb] Date 2018-01-07 08:13
Aquarium backs up trees after every minimax and retains a number of these backups in the folder ATrees\Backup. The latest backup is in ATrees\Backup\LastVersions\0. Simply replace your broken trees with a copy from the backup folder. If that tree is corrupted then go back to an earlier backup.

The alternative is to create a new project and Manage\Add Results from your relevant project epd file in the folder IDeA\Results, and then minimax. There is also an epd utility that can do this, see http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?pid=98226. If you have a large tree you will find the number column capped at 5000, but the evaluations will be as before. If your tree is very large the minimax can take some time.

The project epd file is very useful as it contains the results of every completed task. You can also use it for recovering the gap since the last successful backup. Again use Manage\Add Results with an appropriate quantity of lines from the bottom of the project epd file. You do not have to worry about duplicating tasks because Aquarium does not overwrite results already in the tree. Thankfully Aquarium is so stable now it is rarely ever necessary any more to resort to recovery methods. Only, as in your case, when your computer crashes!
Parent - By Boombaard (**) [nl] Date 2018-01-07 14:50
It worked! Thank you very much. I was really worried I lost all my projects.
I had to go back several backups, probably due to my attempts to 'restore tree'. I think I didn't loose too much data.

I also noticed a lot of different files about the same project in different folders. All with long, strange names like "English$$$restore_temp$$$_$lemom$.lbd_data" or "English_discarde.ldb_data" for my 1.c4 project.

Hopefully I don't need this operation again, but it is good to know it's possible.
Parent - - By OempaS (***) Date 2018-01-09 15:42
The sudden restart is may be due to the 'windows automatic update service"  ? It happened to me few times too. I have now set the "user times" from 22.00 hrs to 16.00 hrs so it will not do any updates during the night. And  I regularly check manually for updates.
However, I never lost a tree because of the automatic back ups by Aquarium. I also backup the whole data directory at least once a day.
Parent - By Boombaard (**) [nl] Date 2018-01-09 20:17
Certainly it has to do with Windows updates. Clever idea to mirror user times. Now you have time to properly close Aquarium before an update is made?
Up Topic Rybka Support & Discussion / Aquarium / trees are empty??

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