[jwhittin]

Many thanks Peter

Calibre reported database errors before I reset the device. So the database is less than two weeks old.

Originally Posted by PeterT

Have you tried using the Kobo Utilities plugin to perform a database check?

Here is the result:

Spoiler:

Result of running 'PRAGMA integrity_check' on database on the Kobo device:


*** in database main ***
Freelist: freelist leaf count too big on page 77632
Freelist: invalid page number 33554432
Tree 3 page 51086: btreeInitPage() returns error code 11
Tree 80 page 76830 cell 6: invalid page number 81281
Tree 80 page 76830 cell 6: Child page depth differs
Tree 80 page 79534 cell 2: invalid page number 81311
Tree 80 page 79534 cell 1: invalid page number 81306
Tree 80 page 79534 cell 0: invalid page number 81280
Tree 80 page 76830 cell 5: Child page depth differs
Tree 80 page 79392 cell 4: invalid page number 81298
Tree 80 page 79392 cell 10: invalid page number 81287
Tree 80 page 79392 cell 9: invalid page number 81264
Tree 80 page 79392 cell 8: invalid page number 81250
Tree 80 page 48012 cell 0: invalid page number 80971
Tree 80 page 48012 cell 0: Child page depth differs
Tree 80 page 80 cell 4: Child page depth differs
Tree 80 page 39879 cell 4: invalid page number 81130
Tree 80 page 39879 cell 4: Child page depth differs
Tree 80 page 39879 cell 3: invalid page number 80970
Tree 80 page 39879 cell 2: 2nd reference to page 45143
Tree 80 page 40015 cell 1: invalid page number 81117
Tree 80 page 40015 cell 10: invalid page number 81134
Tree 80 page 40015 cell 9: invalid page number 81106
Tree 80 page 40015 cell 8: invalid page number 81092
Tree 80 page 40015 cell 7: invalid page number 81076
Tree 80 page 40015 cell 6: invalid page number 81059
Tree 80 page 40015 cell 5: invalid page number 81038
Tree 80 page 40015 cell 4: invalid page number 81023
Tree 80 page 40015 cell 3: invalid page number 81007
Tree 80 page 40015 cell 2: invalid page number 80990
Tree 80 page 40015 cell 1: invalid page number 80969
Tree 80 page 40015 cell 0: invalid page number 80957
Tree 80 page 39879 cell 1: Child page depth differs
Tree 80 page 80 cell 3: Child page depth differs
Tree 80 page 10377 cell 1: 2nd reference to page 22110
Tree 80 page 10377 cell 8: 2nd reference to page 21074
Tree 80 page 10377 cell 7: 2nd reference to page 19647
Tree 80 page 18152 cell 0: invalid page number 80562
Tree 80 page 18152 cell 0: Child page depth differs
Tree 80 page 10377 cell 6: Child page depth differs
Tree 80 page 17104 cell 5: invalid page number 80649
Tree 80 page 18332 cell 8: invalid page number 80714
Tree 80 page 18332 cell 10: invalid page number 80706
Tree 80 page 18332 cell 9: invalid page number 80693
Tree 80 page 18332 cell 8: invalid page number 80685
Tree 80 page 18332 cell 7: invalid page number 80676
Tree 80 page 18332 cell 6: invalid page number 80668
Tree 80 page 18332 cell 5: invalid page number 80659
Tree 80 page 18332 cell 4: invalid page number 80648
Tree 80 page 18332 cell 3: invalid page number 80628
Tree 80 page 18332 cell 2: invalid page number 80618
Tree 80 page 18332 cell 1: invalid page number 80598
Tree 80 page 18332 cell 0: invalid page number 80607
Tree 80 page 17104 cell 8: Child page depth differs
Tree 80 page 18191 cell 7: invalid page number 80580
Tree 80 page 18191 cell 10: invalid page number 80561
Tree 80 page 18191 cell 9: invalid page number 80541
Tree 80 page 18191 cell 8: invalid page number 80520
Tree 80 page 10377 cell 5: Child page depth differs
Tree 4 page 78217 cell 7: invalid page number 81246
Tree 4 page 78217 cell 7: Child page depth differs
Tree 4 page 78217 cell 6: Child page depth differs
Tree 4 page 50782 cell 4: Child page depth differs
Tree 4 page 50661 cell 3: invalid page number 81405
Tree 4 page 50661 cell 6: invalid page number 81465
Tree 4 page 50661 cell 5: Child page depth differs
Tree 4 page 51153 cell 4: invalid page number 81396
Tree 4 page 51153 cell 7: invalid page number 81464
Tree 4 page 51153 cell 6: invalid page number 81448
Tree 4 page 51153 cell 5: invalid page number 81434
Tree 4 page 51153 cell 4: invalid page number 81420
Tree 4 page 51153 cell 3: invalid page number 81466
Tree 4 page 50661 cell 3: 2nd reference to page 51040
Tree 4 page 50661 cell 3: Child page depth differs
Tree 4 page 50661 cell 2: Child page depth differs
Tree 4 page 50782 cell 3: Child page depth differs
Tree 4 page 46753 cell 1: 2nd reference to page 49754
Tree 4 page 46753 cell 4: 2nd reference to page 49699
Tree 4 page 46753 cell 3: 2nd reference to page 48533
Tree 4 page 46753 cell 2: Child page depth differs
Tree 4 page 38299 cell 3: invalid page number 80720
Tree 4 page 38299 cell 3: Child page depth differs
Tree 4 page 39665 cell 6: invalid page number 81042
Tree 4 page 39665 cell 6: Child page depth differs
Tree 4 page 39665 cell 5: invalid page number 81150
Tree 4 page 39665 cell 4: invalid page number 81095
Tree 4 page 39665 cell 3: invalid page number 80731
Tree 4 page 39665 cell 2: invalid page number 80728
Tree 4 page 39665 cell 1: invalid page number 80719
Tree 4 page 40140 cell 0: invalid page number 81156
Tree 4 page 40140 cell 5: invalid page number 81049
Tree 4 page 40140 cell 4: invalid page number 80996
Tree 4 page 40140 cell 3: invalid page number 80877
Tree 4 page 39665 cell 0: Child page depth differs
Tree 4 page 38299 cell 2: Child page depth differs
Tree 4 page 17067 cell 3: invalid page number 80546
Tree 4 page 17067 cell 6: Child page depth differs
Tree 4 page 17686 cell 5: invalid page number 80545
Tree 4 page 17686 cell 5: Child page depth differs
Tree 4 page 17686 cell 4: invalid page number 80623