SQLite error code:14, 'unable to open database file' - macos

Question

In my cocoa application, i am using core data to maintain all my datas. But some time ,i am getting the below given issue.
Issue:
CoreData: error: (14) I/O error for database at /Users/my-mac/Documents/FileT.sqlite. SQLite error code:14, 'unable to open database file'
Here i given the code reference for persistentStoreCoordinator :
- (NSPersistentStoreCoordinator *)persistentStoreCoordinator
{
if (_persistentStoreCoordinator != nil) {
return _persistentStoreCoordinator;
}
NSURL *storeUrl = [NSURL fileURLWithPath: [[self applicationDocumentsDirectory]
stringByAppendingPathComponent: #"FileT.sqlite"]];
NSError *error = nil;
NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption,
[NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil];
_persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc]
initWithManagedObjectModel:[self managedObjectModel]];
options = #{
NSMigratePersistentStoresAutomaticallyOption : #YES,
NSInferMappingModelAutomaticallyOption : #YES
};
if(![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType
configuration:nil URL:storeUrl options:options error:&error]) {
/*Error for store creation should be handled in here*/
}
return _persistentStoreCoordinator;
}
Can anyone suggest what i am missing here?

Answer 1

Take a look at Technical Q&A 1809: New default journaling mode for Core Data SQLite stores in iOS 7 and OS X Mavericks
Your application may be moving or changing the WAL journal files or SQLite files, or may have made assumptions about the file structure that was valid for versions of Core Data that did not use WAL.
It's also possible that your SQLite database is being corrupted, and the error 14 is SQLite attempting to repair the file when Core Data opens it. This corruption can happen if the application was not shut down properly when a write was happening - and many other circumstances. Not shutting down properly is the most common case on Apple platforms though - for example, if Core Data is writing records and the OS kills the application because it's unresponsive. That can cause corruption.