我正在开发一个应用程序，在注销时我正在删除sqlite文件并在登录时我正在创建一个新的但是在重新登录后从服务器获取数据时我遇到了一个谜自2周以来我无法解决的问题：
2013-04-29 07:05:09.107 APP[85958:1cd03] CoreData: sql: SELECT 0, t0.Z_PK, t0.Z_OPT, t0.ZACTION, t0.ZDISPLAYNAME, t0.ZENTITYNAMELIST, t0.ZFIELDCONSULTANTID, t0.ZKEY, t0.ZLASTUPDATETIME, t0.ZMESSAGE, t0.ZPATH, t0.ZPERIODMONTH, t0.ZPERIODYEAR, t0.ZREQUESTDURATION, t0.ZREQUESTNAME, t0.ZREQUESTSTARTTIME, t0.ZSTATE, t0.ZSTOREID, t0.ZTERRITORYID, t0.ZUPDATEDURATION, t0.ZUPDATESTARTTIME FROM ZSYNCREQUESTENTITY t0 WHERE t0.ZKEY = ? LIMIT 1
2013-04-29 07:05:09.107 APP[85958:1cd03] CoreData: details: SQLite bind[0] = "TERRITORY_DATA"
2013-04-29 07:05:09.108 APP[85958:1cd03] CoreData: annotation: Disconnecting from sqlite database due to an error.
2013-04-29 07:05:09.166 APP[85958:1cd03] CoreData: error: (26) Fatal error. The database at /Users/admin/Library/Application Support/iPhone Simulator/6.0/Applications/C01FFF00-8530-4C8E-B954-AD9A70149972/Library/Application Support/APP/APP.sqlite is corrupted. SQLite error code:26, 'file is encrypted or is not a database'
我正在使用MagicalRecord第三方来处理背景中的上下文合并。我不确定它是否可能是问题的原因
任何帮助都会受到赞赏吗？
感谢。
编辑：
这里是2个线程的堆栈跟踪，可能有助于跟踪问题
thread #1: tid = 0x1f03, 0x02228e52 libobjc.A.dylib`objc_exception_throw, stop reason = breakpoint 1.1
frame #0: 0x02228e52 libobjc.A.dylib`objc_exception_throw
frame #1: 0x0069d772 CoreData`_execute + 1634
frame #2: 0x0069d011 CoreData`-[NSSQLiteConnection execute] + 2801
frame #3: 0x006b15ce CoreData`-[NSSQLChannel selectRowsWithStatement:] + 94
frame #4: 0x006ba28f CoreData`newFetchedRowsForFetchPlan_MT + 1279
frame #5: 0x006a56e3 CoreData`-[NSSQLCore newRowsForFetchPlan:] + 323
frame #6: 0x006a4e07 CoreData`-[NSSQLCore objectsForFetchRequest:inContext:] + 711
frame #7: 0x006a48f4 CoreData`-[NSSQLCore executeRequest:withContext:error:] + 404
frame #8: 0x006a3a6d CoreData`-[NSPersistentStoreCoordinator executeRequest:withContext:error:] + 2445
frame #9: 0x006a19c9 CoreData`-[NSManagedObjectContext executeFetchRequest:error:] + 569
frame #10: 0x006f4276 CoreData`-[NSManagedObjectContext(_NestedContextSupport) _parentObjectsForFetchRequest:inContext:error:] + 502
frame #11: 0x0076e155 CoreData`__82-[NSManagedObjectContext(_NestedContextSupport) executeRequest:withContext:error:]_block_invoke_0 + 677
frame #12: 0x006f4071 CoreData`internalBlockToNSManagedObjectContextPerform + 17
frame #13: 0x03d9a014 libdispatch.dylib`_dispatch_client_callout + 14
frame #14: 0x03d89d5f libdispatch.dylib`_dispatch_barrier_sync_f_invoke + 58
frame #15: 0x03d89aa3 libdispatch.dylib`dispatch_barrier_sync_f + 108
frame #16: 0x006f403b CoreData`_perform + 187
frame #17: 0x006f3e9e CoreData`-[NSManagedObjectContext(_NestedContextSupport) executeRequest:withContext:error:] + 238
frame #18: 0x006a19c9 CoreData`-[NSManagedObjectContext executeFetchRequest:error:] + 569
frame #19: 0x006f4276 CoreData`-[NSManagedObjectContext(_NestedContextSupport) _parentObjectsForFetchRequest:inContext:error:] + 502
frame #20: 0x0076e155 CoreData`__82-[NSManagedObjectContext(_NestedContextSupport) executeRequest:withContext:error:]_block_invoke_0 + 677
frame #21: 0x006f4071 CoreData`internalBlockToNSManagedObjectContextPerform + 17
frame #22: 0x03d8b731 libdispatch.dylib`_dispatch_barrier_sync_f_slow_invoke + 89
frame #23: 0x03d9a014 libdispatch.dylib`_dispatch_client_callout + 14
frame #24: 0x03d8a7d5 libdispatch.dylib`_dispatch_main_queue_callback_4CF + 296
frame #25: 0x03565af5 CoreFoundation`__CFRunLoopRun + 1925
frame #26: 0x03564f44 CoreFoundation`CFRunLoopRunSpecific + 276
frame #27: 0x03564e1b CoreFoundation`CFRunLoopRunInMode + 123
frame #28: 0x02d6e7e3 GraphicsServices`GSEventRunModal + 88
frame #29: 0x02d6e668 GraphicsServices`GSEventRun + 104
frame #30: 0x0117065c UIKit`UIApplicationMain + 1211
frame #31: 0x000030ad SubwayDA`main + 125 at main.m:12
thread #29: tid = 0x4103, 0x986d6c5e libsystem_kernel.dylib`semaphore_wait_trap + 10
frame #0: 0x986d6c5e libsystem_kernel.dylib`semaphore_wait_trap + 10
frame #1: 0x03d8bf08 libdispatch.dylib`_dispatch_thread_semaphore_wait + 16
frame #2: 0x03d89b3a libdispatch.dylib`_dispatch_barrier_sync_f_slow + 149
frame #3: 0x03d89a5c libdispatch.dylib`dispatch_barrier_sync_f + 37
frame #4: 0x006f403b CoreData`_perform + 187
frame #5: 0x006f3e9e CoreData`-[NSManagedObjectContext(_NestedContextSupport) executeRequest:withContext:error:] + 238
frame #6: 0x006a19c9 CoreData`-[NSManagedObjectContext executeFetchRequest:error:] + 569
frame #7: 0x00236fbb APP`__67+[NSManagedObject(MagicalRecord) MR_executeFetchRequest:inContext:]_block_invoke_0 + 251 at NSManagedObject+MagicalRecord.m:33
frame #8: 0x006f3d3f CoreData`developerSubmittedBlockToNSManagedObjectContextPerform + 95
frame #9: 0x03d9a014 libdispatch.dylib`_dispatch_client_callout + 14
frame #10: 0x03d89d5f libdispatch.dylib`_dispatch_barrier_sync_f_invoke + 58
frame #11: 0x03d89aa3 libdispatch.dylib`dispatch_barrier_sync_f + 108
frame #12: 0x006f3cba CoreData`-[NSManagedObjectContext performBlockAndWait:] + 202
frame #13: 0x00236d9d APP`+[NSManagedObject(MagicalRecord) MR_executeFetchRequest:inContext:] + 285 at NSManagedObject+MagicalRecord.m:29
frame #14: 0x002372ed APP`+[NSManagedObject(MagicalRecord) MR_executeFetchRequestAndReturnFirstObject:inContext:] + 141 at NSManagedObject+MagicalRecord.m:53
frame #15: 0x002351a6 APP`+[NSManagedObject(MagicalFinders) MR_findFirstWithPredicate:inContext:] + 150 at NSManagedObject+MagicalFinders.m:128
frame #16: 0x002350d0 APP`+[NSManagedObject(MagicalFinders) MR_findFirstWithPredicate:] + 128 at NSManagedObject+MagicalFinders.m:121
frame #17: 0x001f2a3d APP`-[SyncRequestOperation updateSyncRequestFromItem:] + 173 at SyncRequestOperation.m:148
frame #18: 0x001f2c91 APP`-[SyncRequestOperation updateSyncRequestFromItemOnCurrentThread] + 97 at SyncRequestOperation.m:181
frame #19: 0x001f4033 APP`-[SyncRequestOperation loadEntities] + 355 at SyncRequestOperation.m:292
frame #20: 0x001f4f8a APP`-[SyncRequestOperation main] + 890 at SyncRequestOperation.m:385
frame #21: 0x01c61d23 Foundation`-[__NSOperationInternal start] + 736
frame #22: 0x01c61a34 Foundation`-[NSOperation start] + 79
frame #23: 0x01cee301 Foundation`__block_global_6 + 150
frame #24: 0x03d8853f libdispatch.dylib`_dispatch_call_block_and_release + 15
frame #25: 0x03d9a014 libdispatch.dylib`_dispatch_client_callout + 14
frame #26: 0x03d8b2e8 libdispatch.dylib`_dispatch_root_queue_drain + 335
frame #27: 0x03d8afcb libdispatch.dylib`_dispatch_worker_thread3 + 20
frame #28: 0x9a1f0b24 libsystem_c.dylib`_pthread_wqthread + 346
答案 0 :(得分：1)
我在尝试清除核心数据'数据库'时收到了同样的错误。
克里斯蒂安在你的问题中的评论为我解决了这个问题。删除NSPersistentStore之后，我还清除了文档目录。这会删除sql日志文件，这会为我删除错误。
NSPersistentStore *store = [ad.managedObjectContext.persistentStoreCoordinator.persistentStores lastObject];
NSError *error;
NSURL *storeURL = store.URL;
NSPersistentStoreCoordinator *storeCoordinator = ad.persistentStoreCoordinator;
[storeCoordinator removePersistentStore:store error:&error];
[[NSFileManager defaultManager] removeItemAtPath:storeURL.path error:&error];
[self deleteFilesInDocumentsDirectory];
- (void)deleteFilesInDocumentsDirectory
{
NSString *folderPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSError *error = nil;
for (NSString *file in [[NSFileManager defaultManager] contentsOfDirectoryAtPath:folderPath error:&error]) {
[[NSFileManager defaultManager] removeItemAtPath:[folderPath stringByAppendingPathComponent:file] error:&error];
}
}