Getting "SQLite: No temporary directory is accessible." error in v2.7.3

[Nikita Ivanchikov]

Hello Robbie,

I'm using YapDatabase v2.7.3 in one of my projects and today I started receiving following errors on my device (iPhone6, 8.1.4)

<Critical>: SQLite: No temporary directory is accessible.  This is not a legitimate configuration.  Either the process environment or its sandbox is misconfigured.  Various library routines will error out abruptly.
YapDatabaseConnection: Error executing 'yapSetDataForKeyStatement': 23 authorization denied | --[YapDatabaseConnection incrementSnapshotInDatabase]:2740 

YapDatabaseTransaction: Error executing 'yapSetDataForKeyStatement': 23 authorization denied | --[YapDatabaseReadWriteTransaction setStringValue:forKey:extension:]:5757

That's strange, cause DB setup wasn't changed during app development and haven't generated any warnings / errors.  I checked that DB path is set correctly (exists and non-nil), did some fresh app installs and still get the same warnings.

Could you please tell if I'm missing something? (google wasn't much of a help)

Thanks in advance!

[Robbie Hanson]

That’s a good one...

Here’s what I was able to dig up with Google.

> “Apparently this is caused by the process no longer having access to the database file due to iOS’s file encryption. Is it possible your code is being invoked when the device is locked?"

Got the idea from here:

https://groups.google.com/forum/#!topic/mobile-couchbase/q8H3qzgYfHo

You might consider setting the file protection flags to something like NSDataWritingFileProtectionCompleteUntilFirstUserAuthentication for ALL 3 sqlite-related files:

- database.databasePath;

- database.databasePath_wal;

- database.databasePath_shm;

Let me know what you find.

-Robbie Hanson

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