Updated transaction locks to be defered.

src/Marr.Data/DataMapper.cs

@@ -894,10 +894,10 @@ private void UnbindEvents()
             ClosingConnection = null;
         }
 
-        public void BeginTransaction()
+        public void BeginTransaction(IsolationLevel isolationLevel)
         {
             OpenConnection();
-            DbTransaction trans = Command.Connection.BeginTransaction();
+            DbTransaction trans = Command.Connection.BeginTransaction(isolationLevel);
             Command.Transaction = trans;
         }
 

src/Marr.Data/IDataMapper.cs

@@ -90,7 +90,7 @@ public interface IDataMapper : IDisposable
 
         #region - Connections / Transactions -
 
-        void BeginTransaction();
+        void BeginTransaction(IsolationLevel isolationLevel);
         void RollBack();
         void Commit();
         event EventHandler OpeningConnection;

src/Marr.Data/UnitOfWork.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Data;
 using System.Runtime.Serialization;
 
 namespace Marr.Data
@@ -54,12 +55,12 @@ public UnitOfWorkSharedContext SharedContext
             }
         }
 
-        public void BeginTransaction()
+        public void BeginTransaction(IsolationLevel isolationLevel)
         {
             // Only allow one transaction to begin
             if (_transactionCount < 1)
             {
-                DB.BeginTransaction();
+                DB.BeginTransaction(isolationLevel);
             }
 
             _transactionCount++;

src/NzbDrone.Core/Backup/BackupService.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Data;
 using System.IO;
 using System.Linq;
 using System.Text.RegularExpressions;
@@ -108,7 +109,7 @@ private void BackupDatabase()
 
             using (var unitOfWork = new UnitOfWork(() => _maindDb.GetDataMapper()))
             {
-                unitOfWork.BeginTransaction();
+                unitOfWork.BeginTransaction(IsolationLevel.Serializable);
 
                 var databaseFile = _appFolderInfo.GetNzbDroneDatabase();
                 var tempDatabaseFile = Path.Combine(_backupTempFolder, Path.GetFileName(databaseFile));

src/NzbDrone.Core/Datastore/BasicRepository.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Data;
 using System.Linq;
 using System.Linq.Expressions;
 using Marr.Data;
@@ -145,7 +146,7 @@ public void InsertMany(IList<TModel> models)
         {
             using (var unitOfWork = new UnitOfWork(() => DataMapper))
             {
-                unitOfWork.BeginTransaction();
+                unitOfWork.BeginTransaction(IsolationLevel.ReadCommitted);
 
                 foreach (var model in models)
                 {
@@ -160,7 +161,7 @@ public void UpdateMany(IList<TModel> models)
         {
             using (var unitOfWork = new UnitOfWork(() => DataMapper))
             {
-                unitOfWork.BeginTransaction();
+                unitOfWork.BeginTransaction(IsolationLevel.ReadCommitted);
 
                 foreach (var model in models)
                 {
@@ -203,7 +204,7 @@ public void DeleteMany(IEnumerable<int> ids)
         {
             using (var unitOfWork = new UnitOfWork(() => DataMapper))
             {
-                unitOfWork.BeginTransaction();
+                unitOfWork.BeginTransaction(IsolationLevel.ReadCommitted);
 
                 foreach (var id in ids)
                 {

src/NzbDrone.Core/Datastore/Migration/Framework/MigrationController.cs

@@ -1,4 +1,5 @@
-using System.Reflection;
+using System.Diagnostics;
+using System.Reflection;
 using FluentMigrator.Runner;
 using FluentMigrator.Runner.Initialization;
 using FluentMigrator.Runner.Processors.SQLite;
@@ -21,6 +22,8 @@ public MigrationController(IAnnouncer announcer)
 
         public void MigrateToLatest(string connectionString, MigrationType migrationType)
         {
+            var sw = Stopwatch.StartNew();
+
             _announcer.Heading("Migrating " + connectionString);
 
             var assembly = Assembly.GetExecutingAssembly();
@@ -39,6 +42,10 @@ public void MigrateToLatest(string connectionString, MigrationType migrationType
             var processor = factory.Create(connectionString, _announcer, options);
             var runner = new MigrationRunner(assembly, migrationContext, processor);
             runner.MigrateUp(true);
+
+            sw.Stop();
+
+           _announcer.ElapsedTime(sw.Elapsed);
         }
     }
 }

src/NzbDrone.Core/Datastore/Migration/Framework/MigrationDbFactory.cs

@@ -0,0 +1,14 @@
+using System.Data.Common;
+using System.Data.SQLite;
+using FluentMigrator.Runner.Processors;
+
+namespace NzbDrone.Core.Datastore.Migration.Framework
+{
+    public class MigrationDbFactory : DbFactoryBase
+    {
+        protected override DbProviderFactory CreateFactory()
+        {
+            return SQLiteFactory.Instance;
+        }
+    }
+}

src/NzbDrone.Core/Datastore/Migration/Framework/MigrationLogger.cs

@@ -37,6 +37,7 @@ public void Sql(string sql)
 
         public void ElapsedTime(TimeSpan timeSpan)
         {
+            _logger.Debug("Took: {0}", timeSpan);
         }
 
         public void Error(string message)

src/NzbDrone.Core/Datastore/Migration/Framework/NzbDroneSqliteProcessorFactory.cs

@@ -10,7 +10,7 @@ public class NzbDroneSqliteProcessorFactory : SqliteProcessorFactory
     {
         public override IMigrationProcessor Create(String connectionString, IAnnouncer announcer, IMigrationProcessorOptions options)
         {
-            var factory = new SqliteDbFactory();
+            var factory = new MigrationDbFactory();
             var connection = factory.CreateConnection(connectionString);
             var generator = new SqliteGenerator() { compatabilityMode = CompatabilityMode.STRICT };
             return new NzbDroneSqliteProcessor(connection, generator, announcer, options, factory);

src/NzbDrone.Core/Instrumentation/DatabaseTarget.cs

@@ -22,7 +22,8 @@ public class DatabaseTarget : TargetWithLayout, IHandle<ApplicationShutdownReque
 
         public DatabaseTarget(IConnectionStringFactory connectionStringFactory)
         {
-            _connection = new SQLiteConnection(connectionStringFactory.LogDbConnectionString).OpenAndReturn();
+            _connection = new SQLiteConnection(connectionStringFactory.LogDbConnectionString);
+            _connection.Open();
         }
 
         public void Register()

src/NzbDrone.Core/NzbDrone.Core.csproj

@@ -230,6 +230,7 @@
     <Compile Include="Datastore\Migration\067_add_added_to_series.cs" />
     <Compile Include="Datastore\Migration\Framework\MigrationContext.cs" />
     <Compile Include="Datastore\Migration\Framework\MigrationController.cs" />
+    <Compile Include="Datastore\Migration\Framework\MigrationDbFactory.cs" />
     <Compile Include="Datastore\Migration\Framework\MigrationExtension.cs" />
     <Compile Include="Datastore\Migration\Framework\MigrationLogger.cs" />
     <Compile Include="Datastore\Migration\Framework\MigrationOptions.cs" />