database disk image is malformed

[JUMA55]

Went to save the metadata on a book and got the following and got it while attempting to exit the program or add a new book. I'm running calibre on an Intel iMac with Sequoia 15. Does anyone have an idea on how to fix this? Thank you.

calibre, version 7.20.0
ERROR: Unhandled exception: <b>CorruptError</b>:CorruptError: database disk image is malformed

calibre 7.20 embedded-python: True
macOS-15.1-x86_64-i386-64bit Darwin ('64bit', '')
('Darwin', '24.1.0', 'Darwin Kernel Version 24.1.0: Thu Oct 10 21:02:27 PDT 2024; root:xnu-11215.41.3~2/RELEASE_X86_64')
Python 3.11.5
OSX: ('15.1', ('', '', ''), 'x86_64')
Interface language: None
EXE path: /Applications/calibre.app/Contents/MacOS/calibre
Successfully initialized third party plugins: Find Duplicates (1, 10, 9)
Traceback (most recent call last):
File "calibre/gui2/actions/delete.py", line 460, in delete_books
File "calibre/gui2/actions/delete.py", line 437, in do_library_delete
File "calibre/gui2/library/models.py", line 474, in delete_books_by_id
File "calibre/db/cache.py", line 85, in call_func_with_lock
File "calibre/db/cache.py", line 2224, in remove_books
File "calibre/db/backend.py", line 2295, in remove_books
File "calibre/db/backend.py", line 1159, in executemany
File "src/cursor.c", line 240, in resetcursor
apsw.CorruptError: CorruptError: database disk image is malformed

[DNSB]

A couple of questions. Where is your calibre library stored? Local disk? NAS? Cloud Storage?

If you are using local storage, you could try restoring the database. Click on the library icon => Library Maintenance => Restore database. You may want to delete/move the metadata.db file in the root of the library folder before doing this.

Otherwise see: I am getting errors with my calibre library on a networked drive/NAS? in the calibre FAQs.

[JUMA55]

Originally Posted by DNSB

A couple of questions. Where is your calibre library stored? Local disk? NAS? Cloud Storage?

If you are using local storage, you could try restoring the database. Click on the library icon => Library Maintenance => Restore database. You may want to delete/move the metadata.db file in the root of the library folder before doing this.

Otherwise see: I am getting errors with my calibre library on a networked drive/NAS? in the calibre FAQs.

Thank you for the help. That worked. I wonder how the database got corrupted in the first place and how do I keep it from happening again. My calibre library is on my internal disk.