Library corrputed when changing author

[gandalfbp]

Hello all,
I see several times "library corrupted" error, especially, when I change the name of the author. Like this: I add a book, it appears as Author: "Williams, Tad" and I change it to "Tad Williams", then the DB goes south. I can not bind it to any version, it happened since many times with me, with many different version. I use the version 8 now, and it just happened.
Nothing lost, I can rebuild it, but it is a pain in the back...
Any idea what am I doring wrong?
Thanks!

[kovidgoyal]

What exactly is the error? click the show details button on the error message and post the full error.

[gandalfbp]

Ok, next time it happens I will . Sorry for not to be prepared beforehand ...

[gandalfbp]

Ok, here we go! Actually this time I dropped a book on the app, then after 3-4 second I dropped an other one. Then this came:

calibre, version 8.0.0
WARNING: Errors while adding: There were problems adding some files, click "Show details" for more information


----------------------------------------------------------------------
Failed to add the file C:/Users/baran/Desktop/Tad_Williams_-_[Otherland_02]_-_River_of_Blue_Fire_(v5.0).epub to the book: River of Blue Fire
With error:
Traceback (most recent call last):
File "calibre\db\backend.py", line 1163, in executemany
File "C:\t\t\apsw-42s16m2x\src\cursor.c", line 240, in resetcursor
apsw.CorruptError: CorruptError: database disk image is malformed

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\gui2\add.py", line 488, in add_formats
File "calibre\db\cache.py", line 1991, in add_format
File "calibre\db\cache.py", line 1566, in update_last_modified
File "calibre\db\write.py", line 572, in set_books
File "calibre\db\write.py", line 206, in one_one_in_books
File "calibre\db\backend.py", line 1162, in executemany
apsw.CorruptError: CorruptError: database disk image is malformed

[kovidgoyal]

That error typically happens when you have multiple processes trying to access the calibre library folder or the library folder is on a non native disk/filesystem. Make sure its on an NTFS filesystem on a locally attached disk and exclude the library folder from antivirus and filesync programs such as dropbox or onedrive or similar.

[gandalfbp]

Thanks for the quick support, I will apply your recomendations!