[Digikam-users] missing thumbnails - database cleanup???

Gilles Caulier caulier.gilles at gmail.com
Tue Jan 6 17:26:45 GMT 2015

Hi Daniel,

Just to try, rename thumbnails-digikam.db database file and restart digiKam.

There is nothing important in this database. It store thumbnail with
wavelets compression. It's a cache.

You will need of course to rebuild thumbnails after.

Gilles Caulier

2015-01-06 16:13 GMT+01:00 Daniel Bauer <linux at daniel-bauer.com>:
> Am 06.01.2015 um 15:25 schrieb Daniel Bauer:
>> Hello,
>> from time to time digikam refuses to show thumbnails in the album view
>> for some images. No idea why...
>> Searching google I found that it might bbe nessesary to cleanup the
>> databases. As I always have a lot of changes I can imagine...
>> But I cannot find the cleanup_digikamdb.1 program as an rpm for
>> opensuse. Big brother google doesn't help me, of course.
>> Any hints?
>> Daniel
>> digikam 3.2.0
>> sqlite db
>> (ps: I even copied the missing image again under a new name, it is still
>> not shown...)
> I updated to digikam 4.6.0, no change
> I run
>         sqlite3 -line digikam4.db 'pragma integrity_check;'  and
>         sqlite3 -line thumbnails-digikam.db 'pragma integrity_check;'
> no errors
>         sqlite3 -line digikam4.db 'vacuum;'
> reduced size about 50%
>         sqlite3 -line thumbnails-digikam.db 'vacuum;'
> no vivible change in file size
> however the thumbs of those images are still not shown.
> There must be something in those images that digikam does not like (although
> they were produced with digikams batch tool). They wouldn't be shown in any
> other folder, no matter if I rename them. But when I open the fiole with
> gewenview and save a new copy, it is immediately shown...
> I can send such an image to a developper, but not publish it...
> Daniel
> --
> Daniel Bauer photographer Basel Barcelona
> http://www.daniel-bauer.com
> room in Barcelona: https://www.airbnb.es/rooms/2416137
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