I'm preparing an update for a Core Data based app for fixes with iOS 7. I use Xcode 5 and iOS 7 SDK GM. However I realized a different behavior of the persistent store (which is a UIManagedDocument
): Prior to iOS 7 builds there was only one file persistentStore
in the documents folder (sometimes there was a second one persistentStore-journal
).
In iOS 7 builds (clean installation) there are now three files for the persistent store:
persistentStore
persistentStore-wal
and
persistentStore-shm
Did Apple change the journal mode by default to WAL now? I wonder if there is an impact on my app (think of users how update from the last version)? Would it be best to disable WAL - and if so, how can I do this with iOS 7/UIManagedDocument
?
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