CoreData: Strange data corruption errors - iOS 9 only?

I'm starting to see telemetry come back for our latest release build with Xcode 7. I'm seeing what seems to be data corruption for our CoreData databases, but only on iOS 9. I'm seeing two forms, both when the application tries to reopen the database on launch:

Could not create history store with error Error Domain=NSCocoaErrorDomain Code=259 "The file couldn’t be opened because it isn’t in the correct format." UserInfo={NSSQLiteErrorDomain=26, NSUnderlyingException=File at path does not appear to be a SQLite database: /var/mobile/Containers/Data/Application/95677339-A20B-4EBF-B1B4-0AB6AC5E1080/Library/Application Support/History.db}


That one I have no ideas on. It's like our database just became magically corrupted.

Could not create thumbnail store with error Error Domain=NSCocoaErrorDomain Code=134110 "An error occurred during persistent store migration." UserInfo={destinationURL=file:///var/mobile/Containers/Data/Application/36E5990A-CF49-44C4-8C1B-9338C7A2A3FE/Library/Caches/.Thumbnails.db.migrationdestination_41b5a6b5c6e848c462a8480cd24caef3, reason=Cannot migrate store in-place: I/O error for database at /var/mobile/Containers/Data/Application/36E5990A-CF49-44C4-8C1B-9338C7A2A3FE/Library/Caches/.Thumbnails.db.migrationdestination_41b5a6b5c6e848c462a8480cd24caef3. SQLite error code:1, 'no such column: ZACTIONTOKEN', NSUnderlyingError=0x15621090 {Error Domain=NSCocoaErrorDomain Code=134110 "An error occurred during persistent store migration." UserInfo={NSSQLiteErrorDomain=1, NSFilePath=/var/mobile/Containers/Data/Application/36E5990A-CF49-44C4-8C1B-9338C7A2A3FE/Library/Caches/.Thumbnails.db.migrationdestination_41b5a6b5c6e848c462a8480cd24caef3, reason=I/O error for database at /var/mobile/Containers/Data/Application/36E5990A-CF49-44C4-8C1B-9338C7A2A3FE/Library/Caches/.Thumbnails.db.migrationdestination_41b5a6b5c6e848c462a8480cd24caef3. SQLite error code:1, 'no such column: ZACTIONTOKEN', NSUnderlyingException=I/O error for database at /var/mobile/Containers/Data/Application/36E5990A-CF49-44C4-8C1B-9338C7A2A3FE/Library/Caches/.Thumbnails.db.migrationdestination_41b5a6b5c6e848c462a8480cd24caef3. SQLite error code:1, 'no such column: ZACTIONTOKEN'}}, sourceURL=file:///var/mobile/Containers/Data/Application/36E5990A-CF49-44C4-8C1B-9338C7A2A3FE/Library/Caches/Thumbnails.db}


This one is odd because the store throwing the error has a custom configuration that shouldn't require the column SQLite is complaining about, and the database shouldn't need migration.


I haven't been able to repro in house, but this only happening for our iOS 9 customers seems like it might be one clue. Were there any changes to CoreData in iOS 9 that could cause us to trip into one of these issues?

hey, have you ever been able to solve this? I'm experiencing the exact same problem - iOS 9 only.

Hi guys.. I'm seeing the same problem. iOS 9 only and 99% happening on 6s and 6s plus devices. I found this post. Do you think this could be the reason of the crashes? https://forums.developer.apple.com/message/78808

Any update on this? I am also facing the same issue . But its happening with me in iOS 8 as well

CoreData: Strange data corruption errors - iOS 9 only?
 
 
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