update sqlite sync mode

MediaBrowser.Server.Implementations/Persistence/SqliteExtensions.cs

@@ -176,7 +176,7 @@ namespace MediaBrowser.Server.Implementations.Persistence
             {
                 PageSize = 4096,
                 CacheSize = 4096,
-                SyncMode = SynchronizationModes.Off,
+                SyncMode = SynchronizationModes.Normal,
                 DataSource = dbPath,
                 JournalMode = SQLiteJournalModeEnum.Wal
             };

MediaBrowser.ServerApplication/ApplicationHost.cs

@@ -386,7 +386,8 @@ namespace MediaBrowser.ServerApplication
                 PageSize = 4096,
                 CacheSize = 4096,
                 SyncMode = SynchronizationModes.Normal,
-                DataSource = dbPath
+                DataSource = dbPath,
+                JournalMode = SQLiteJournalModeEnum.Wal
             };
 
             var connection = new SQLiteConnection(connectionstr.ConnectionString);