diff --git a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/core/DBeaverCore.java b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/core/DBeaverCore.java
index 59a23a4c460bbf34b1a9751c70e447f13c7012a6..960f1f7cd866a92da3447d178dcab27ae000de09 100644
--- a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/core/DBeaverCore.java
+++ b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/core/DBeaverCore.java
@@ -25,6 +25,7 @@ import org.jkiss.dbeaver.DBException;
 import org.jkiss.dbeaver.model.DBPApplication;
 import org.jkiss.dbeaver.model.DBPPreferenceStore;
 import org.jkiss.dbeaver.model.DBPProjectManager;
+import org.jkiss.dbeaver.model.qm.QMUtils;
 import org.jkiss.dbeaver.registry.PluginServiceRegistry;
 import org.jkiss.dbeaver.runtime.IPluginService;
 import org.jkiss.dbeaver.runtime.net.GlobalProxyAuthenticator;
@@ -161,7 +162,9 @@ public class DBeaverCore implements DBPApplication {
 
         this.localSystem = new OSDescriptor(Platform.getOS(), Platform.getOSArch());
 
+        QMUtils.initApplication(this);
         this.queryManager = new QMControllerImpl();
+
         this.qmLogWriter = new QMLogFileWriter();
         this.queryManager.registerMetaListener(qmLogWriter);
 
@@ -333,6 +336,11 @@ public class DBeaverCore implements DBPApplication {
         return queryManager;
     }
 
+    @Override
+    public DBPPreferenceStore getPreferenceStore() {
+        return getGlobalPreferenceStore();
+    }
+
     public ProjectRegistry getProjectRegistry()
     {
         return projectRegistry;
diff --git a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/DBPApplication.java b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/DBPApplication.java
index 58984a06aec2bad23408e3497518bce83f7624f8..dc7aeba96a76801d08261da6cf3dacca5069364c 100644
--- a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/DBPApplication.java
+++ b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/DBPApplication.java
@@ -22,6 +22,7 @@ import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IWorkspace;
 import org.jkiss.code.NotNull;
 import org.jkiss.dbeaver.model.navigator.DBNModel;
+import org.jkiss.dbeaver.model.qm.QMController;
 
 import java.util.Collection;
 
@@ -35,7 +36,14 @@ public interface DBPApplication
 
     IWorkspace getWorkspace();
 
+    @NotNull
     DBPProjectManager getProjectManager();
+    @NotNull
     Collection<IProject> getLiveProjects();
 
+    @NotNull
+    QMController getQueryManager();
+
+    @NotNull
+    DBPPreferenceStore getPreferenceStore();
 }
diff --git a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/DBPProjectManager.java b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/DBPProjectManager.java
index 909e9e44bab1440bfad04f7837ba0a84809b6718..ee4176025b0b9192eac346fecc947bb11823cc7c 100644
--- a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/DBPProjectManager.java
+++ b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/DBPProjectManager.java
@@ -28,6 +28,8 @@ import org.jkiss.dbeaver.model.project.DBPResourceHandler;
  */
 public interface DBPProjectManager
 {
+    DBPApplication geApplication();
+
     DBPResourceHandler getResourceHandler(IResource resource);
 
     IProject getActiveProject();
diff --git a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/jdbc/data/JDBCContentBLOB.java b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/jdbc/data/JDBCContentBLOB.java
index 9594036b8976eeb51760e682f5fc15af65d2fb21..ecea9f17ba9f9f6756f7d31de6b248718daff4a2 100644
--- a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/jdbc/data/JDBCContentBLOB.java
+++ b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/jdbc/data/JDBCContentBLOB.java
@@ -17,9 +17,9 @@
  */
 package org.jkiss.dbeaver.model.impl.jdbc.data;
 
-import org.jkiss.dbeaver.core.Log;
 import org.eclipse.core.resources.IFile;
-import org.jkiss.dbeaver.core.DBeaverCore;
+import org.jkiss.dbeaver.DBeaverPreferences;
+import org.jkiss.dbeaver.core.Log;
 import org.jkiss.dbeaver.model.DBPDataSource;
 import org.jkiss.dbeaver.model.data.DBDContentStorage;
 import org.jkiss.dbeaver.model.data.DBDDisplayFormat;
@@ -30,7 +30,6 @@ import org.jkiss.dbeaver.model.impl.BytesContentStorage;
 import org.jkiss.dbeaver.model.impl.TemporaryContentStorage;
 import org.jkiss.dbeaver.model.runtime.DBRProgressMonitor;
 import org.jkiss.dbeaver.model.struct.DBSTypedObject;
-import org.jkiss.dbeaver.DBeaverPreferences;
 import org.jkiss.dbeaver.utils.ContentUtils;
 import org.jkiss.dbeaver.utils.MimeTypes;
 
@@ -80,12 +79,12 @@ public class JDBCContentBLOB extends JDBCContentLOB {
     {
         if (storage == null && blob != null) {
             long contentLength = getContentLength();
-            if (contentLength < DBeaverCore.getGlobalPreferenceStore().getInt(DBeaverPreferences.MEMORY_CONTENT_MAX_SIZE)) {
+            if (contentLength < dataSource.getContainer().getApplication().getPreferenceStore().getInt(DBeaverPreferences.MEMORY_CONTENT_MAX_SIZE)) {
                 try {
                     storage = BytesContentStorage.createFromStream(
                         blob.getBinaryStream(),
                         contentLength,
-                        DBeaverCore.getGlobalPreferenceStore().getString(DBeaverPreferences.CONTENT_HEX_ENCODING));
+                        dataSource.getContainer().getApplication().getPreferenceStore().getString(DBeaverPreferences.CONTENT_HEX_ENCODING));
                 }
                 catch (SQLException e) {
                     throw new DBCException(e, dataSource);
diff --git a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/jdbc/data/JDBCContentCLOB.java b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/jdbc/data/JDBCContentCLOB.java
index e1fc687e048de42bbbed4ec5454c726f232d7764..6b6bab4e6e6d87ed6c1eeeb5b5b9d1ee3af13155 100644
--- a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/jdbc/data/JDBCContentCLOB.java
+++ b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/jdbc/data/JDBCContentCLOB.java
@@ -17,10 +17,9 @@
  */
 package org.jkiss.dbeaver.model.impl.jdbc.data;
 
-import org.jkiss.dbeaver.core.Log;
 import org.eclipse.core.resources.IFile;
 import org.jkiss.dbeaver.DBeaverPreferences;
-import org.jkiss.dbeaver.core.DBeaverCore;
+import org.jkiss.dbeaver.core.Log;
 import org.jkiss.dbeaver.model.DBPDataSource;
 import org.jkiss.dbeaver.model.data.DBDContent;
 import org.jkiss.dbeaver.model.data.DBDContentStorage;
@@ -82,7 +81,7 @@ public class JDBCContentCLOB extends JDBCContentLOB implements DBDContent {
     {
         if (storage == null && clob != null) {
             long contentLength = getContentLength();
-            if (contentLength < DBeaverCore.getGlobalPreferenceStore().getInt(DBeaverPreferences.MEMORY_CONTENT_MAX_SIZE)) {
+            if (contentLength < dataSource.getContainer().getApplication().getPreferenceStore().getInt(DBeaverPreferences.MEMORY_CONTENT_MAX_SIZE)) {
                 try {
                     storage = StringContentStorage.createFromReader(clob.getCharacterStream(), contentLength);
                 }
diff --git a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/net/HTTPTunnelImpl.java b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/net/HTTPTunnelImpl.java
index dfba42c0d2aa7bcb2801fbfb8c2c9372fddae068..7094f89b07a4f756226675a3e54dca0e1d737f9d 100644
--- a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/net/HTTPTunnelImpl.java
+++ b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/net/HTTPTunnelImpl.java
@@ -18,6 +18,7 @@
 package org.jkiss.dbeaver.model.impl.net;
 
 import org.jkiss.dbeaver.DBException;
+import org.jkiss.dbeaver.model.DBPApplication;
 import org.jkiss.dbeaver.model.DBPConnectionConfiguration;
 import org.jkiss.dbeaver.model.net.DBWHandlerConfiguration;
 import org.jkiss.dbeaver.model.net.DBWTunnel;
@@ -31,7 +32,7 @@ import java.io.IOException;
 public class HTTPTunnelImpl implements DBWTunnel {
 
     @Override
-    public DBPConnectionConfiguration initializeTunnel(DBRProgressMonitor monitor, DBWHandlerConfiguration configuration, DBPConnectionConfiguration connectionInfo)
+    public DBPConnectionConfiguration initializeTunnel(DBRProgressMonitor monitor, DBPApplication application, DBWHandlerConfiguration configuration, DBPConnectionConfiguration connectionInfo)
         throws DBException, IOException
     {
         return connectionInfo;
diff --git a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/net/SSHTunnelImpl.java b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/net/SSHTunnelImpl.java
index 25981b1bb4202bf40f7e3f251f3088414c586476..411c5714342767ff7ad4faa57a3fe7c5c1a37918 100644
--- a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/net/SSHTunnelImpl.java
+++ b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/impl/net/SSHTunnelImpl.java
@@ -20,8 +20,8 @@ package org.jkiss.dbeaver.model.impl.net;
 import com.jcraft.jsch.*;
 import org.jkiss.dbeaver.DBException;
 import org.jkiss.dbeaver.DBeaverPreferences;
-import org.jkiss.dbeaver.core.DBeaverCore;
 import org.jkiss.dbeaver.core.Log;
+import org.jkiss.dbeaver.model.DBPApplication;
 import org.jkiss.dbeaver.model.DBPConnectionConfiguration;
 import org.jkiss.dbeaver.model.DBPPreferenceStore;
 import org.jkiss.dbeaver.model.net.DBWHandlerConfiguration;
@@ -48,7 +48,7 @@ public class SSHTunnelImpl implements DBWTunnel {
     private transient Session session;
 
     @Override
-    public DBPConnectionConfiguration initializeTunnel(DBRProgressMonitor monitor, DBWHandlerConfiguration configuration, DBPConnectionConfiguration connectionInfo)
+    public DBPConnectionConfiguration initializeTunnel(DBRProgressMonitor monitor, DBPApplication application, DBWHandlerConfiguration configuration, DBPConnectionConfiguration connectionInfo)
         throws DBException, IOException
     {
         String dbPortString = connectionInfo.getHostPort();
@@ -107,7 +107,7 @@ public class SSHTunnelImpl implements DBWTunnel {
         } catch (NumberFormatException e) {
             throw new DBException("Bad database port number: " + dbPortString);
         }
-        int localPort = findFreePort();
+        int localPort = findFreePort(application);
         try {
             if (jsch == null) {
                 jsch = new JSch();
@@ -155,9 +155,9 @@ public class SSHTunnelImpl implements DBWTunnel {
         return connectionInfo;
     }
 
-    private int findFreePort()
+    private int findFreePort(DBPApplication application)
     {
-        DBPPreferenceStore store = DBeaverCore.getGlobalPreferenceStore();
+        DBPPreferenceStore store = application.getPreferenceStore();
         int minPort = store.getInt(DBeaverPreferences.NET_TUNNEL_PORT_MIN);
         int maxPort = store.getInt(DBeaverPreferences.NET_TUNNEL_PORT_MAX);
         int portRange = Math.abs(maxPort - minPort);
diff --git a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/net/DBWTunnel.java b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/net/DBWTunnel.java
index baa7b143e324264be011b2a7a6b9897229330ee4..5073ffd5446c1e9e20d0c916382cd4260af4fd43 100644
--- a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/net/DBWTunnel.java
+++ b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/net/DBWTunnel.java
@@ -18,6 +18,7 @@
 package org.jkiss.dbeaver.model.net;
 
 import org.jkiss.dbeaver.DBException;
+import org.jkiss.dbeaver.model.DBPApplication;
 import org.jkiss.dbeaver.model.DBPConnectionConfiguration;
 import org.jkiss.dbeaver.model.runtime.DBRProgressMonitor;
 
@@ -28,7 +29,7 @@ import java.io.IOException;
  */
 public interface DBWTunnel extends DBWNetworkHandler {
 
-    DBPConnectionConfiguration initializeTunnel(DBRProgressMonitor monitor, DBWHandlerConfiguration configuration, DBPConnectionConfiguration connectionInfo)
+    DBPConnectionConfiguration initializeTunnel(DBRProgressMonitor monitor, DBPApplication application, DBWHandlerConfiguration configuration, DBPConnectionConfiguration connectionInfo)
         throws DBException, IOException;
 
     void closeTunnel(DBRProgressMonitor monitor, DBPConnectionConfiguration connectionInfo)
diff --git a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/qm/QMUtils.java b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/qm/QMUtils.java
index 1cab526bf1a203ebc21fa18de780676b24cdf21a..3f3867f64c06c7f178f25ea780183598b3805fb1 100644
--- a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/qm/QMUtils.java
+++ b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/qm/QMUtils.java
@@ -18,7 +18,7 @@
 
 package org.jkiss.dbeaver.model.qm;
 
-import org.jkiss.dbeaver.core.DBeaverCore;
+import org.jkiss.dbeaver.model.DBPApplication;
 
 import java.util.List;
 
@@ -27,38 +27,43 @@ import java.util.List;
  */
 public class QMUtils {
 
+    private static DBPApplication application;
     private static QMExecutionHandler defaultHandler; 
-
+    
+    public static void initApplication(DBPApplication application) {
+        QMUtils.application = application;
+    }
+    
     public static QMExecutionHandler getDefaultHandler()
     {
         if (defaultHandler == null) {
-            defaultHandler = DBeaverCore.getInstance().getQueryManager().getDefaultHandler();
+            defaultHandler = application.getQueryManager().getDefaultHandler();
         }
         return defaultHandler;
     }
 
     public static void registerHandler(QMExecutionHandler handler)
     {
-        DBeaverCore.getInstance().getQueryManager().registerHandler(handler);
+        application.getQueryManager().registerHandler(handler);
     }
 
     public static void unregisterHandler(QMExecutionHandler handler)
     {
-        DBeaverCore.getInstance().getQueryManager().unregisterHandler(handler);
+        application.getQueryManager().unregisterHandler(handler);
     }
 
     public static void registerMetaListener(QMMetaListener metaListener)
     {
-        DBeaverCore.getInstance().getQueryManager().registerMetaListener(metaListener);
+        application.getQueryManager().registerMetaListener(metaListener);
     }
 
     public static void unregisterMetaListener(QMMetaListener metaListener)
     {
-        DBeaverCore.getInstance().getQueryManager().unregisterMetaListener(metaListener);
+        application.getQueryManager().unregisterMetaListener(metaListener);
     }
 
     public static List<QMMetaEvent> getPastMetaEvents()
     {
-        return DBeaverCore.getInstance().getQueryManager().getPastMetaEvents();
+        return application.getQueryManager().getPastMetaEvents();
     }
 }
diff --git a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/struct/DBSDataSourceContainer.java b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/struct/DBSDataSourceContainer.java
index 1eef5cfaa46bb491801f63a3df341068a980f61a..4a7e6c8656a1f02ae160ae9bd6040fb2f42f6444 100644
--- a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/struct/DBSDataSourceContainer.java
+++ b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/struct/DBSDataSourceContainer.java
@@ -48,6 +48,9 @@ public interface DBSDataSourceContainer extends DBSObject, DBDPreferences, DBPNa
     @NotNull
     DBPDriver getDriver();
 
+    @NotNull
+    DBPApplication getApplication();
+
     /**
      * Connection configuration.
      * @return connection details
diff --git a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/registry/DataSourceDescriptor.java b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/registry/DataSourceDescriptor.java
index 11ec4d57cbd5f58745a4bd2c0f4766f73b94cc7f..ab308d44aa1e3ab00c3f8f54829643d93adf24ba 100644
--- a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/registry/DataSourceDescriptor.java
+++ b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/registry/DataSourceDescriptor.java
@@ -202,6 +202,11 @@ public class DataSourceDescriptor
         return driver;
     }
 
+    @Override
+    public DBPApplication getApplication() {
+        return registry.getApplication();
+    }
+
     public void setDriver(@NotNull DriverDescriptor driver)
     {
         if (driver == this.driver) {
@@ -591,7 +596,7 @@ public class DataSourceDescriptor
                 monitor.subTask("Initialize tunnel");
                 tunnel = tunnelConfiguration.createHandler(DBWTunnel.class);
                 try {
-                    tunnelConnectionInfo = tunnel.initializeTunnel(monitor, tunnelConfiguration, connectionInfo);
+                    tunnelConnectionInfo = tunnel.initializeTunnel(monitor, registry.getApplication(), tunnelConfiguration, connectionInfo);
                 } catch (Exception e) {
                     throw new DBCException("Can't initialize tunnel", e);
                 }
diff --git a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/registry/DataSourceRegistry.java b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/registry/DataSourceRegistry.java
index f6da7ab6052a180130308211c6e0fdd628e1c1bf..e98325ab22f847f860c7b92fb3e6740a22f222be 100644
--- a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/registry/DataSourceRegistry.java
+++ b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/registry/DataSourceRegistry.java
@@ -66,13 +66,15 @@ public class DataSourceRegistry implements DBPDataSourceRegistry
     public static final String CONFIG_FILE_NAME = ".dbeaver-data-sources.xml"; //$NON-NLS-1$
     public static final String OLD_CONFIG_FILE_NAME = "data-sources.xml"; //$NON-NLS-1$
 
+    private final DBPApplication application;
     private final IProject project;
 
     private final List<DataSourceDescriptor> dataSources = new ArrayList<DataSourceDescriptor>();
     private final List<DBPEventListener> dataSourceListeners = new ArrayList<DBPEventListener>();
 
-    public DataSourceRegistry(IProject project)
+    public DataSourceRegistry(DBPApplication application, IProject project)
     {
+        this.application = application;
         this.project = project;
         IFile configFile = project.getFile(CONFIG_FILE_NAME);
         if (!configFile.exists()) {
@@ -133,6 +135,10 @@ public class DataSourceRegistry implements DBPDataSourceRegistry
         }
     }
 
+    public DBPApplication getApplication() {
+        return application;
+    }
+
     ////////////////////////////////////////////////////
     // Data sources
 
diff --git a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/registry/ProjectRegistry.java b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/registry/ProjectRegistry.java
index d9a322816bbcf08ae1c5c97bb9468274b38d4c98..811953856cf9f0f8b9c98927c02e7dc75261eb91 100644
--- a/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/registry/ProjectRegistry.java
+++ b/plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/registry/ProjectRegistry.java
@@ -23,6 +23,7 @@ import org.eclipse.core.runtime.*;
 import org.eclipse.swt.widgets.Display;
 import org.jkiss.dbeaver.DBException;
 import org.jkiss.dbeaver.core.DBeaverCore;
+import org.jkiss.dbeaver.model.DBPApplication;
 import org.jkiss.dbeaver.model.DBPProjectManager;
 import org.jkiss.dbeaver.ui.resources.DefaultResourceHandlerImpl;
 import org.jkiss.dbeaver.model.project.DBPProjectListener;
@@ -170,6 +171,11 @@ public class ProjectRegistry implements DBPProjectManager {
         }
     }
 
+    @Override
+    public DBPApplication geApplication() {
+        return DBeaverCore.getInstance();
+    }
+
     @Override
     public DBPResourceHandler getResourceHandler(IResource resource)
     {
@@ -335,7 +341,7 @@ public class ProjectRegistry implements DBPProjectManager {
             log.warn("Project [" + project + "] already added");
             return;
         }
-        projectDatabases.put(project, new DataSourceRegistry(project));
+        projectDatabases.put(project, new DataSourceRegistry(DBeaverCore.getInstance(), project));
     }
 
     @Override