diff --git a/libsearch/appdata/app-info-table-private.h b/libsearch/appdata/app-info-table-private.h
index 358ba60..7cbe75d 100644
--- a/libsearch/appdata/app-info-table-private.h
+++ b/libsearch/appdata/app-info-table-private.h
@@ -45,8 +45,8 @@ public:
 
 private:
     ~AppInfoTablePrivate();
-    void initDateBaseConnection();
-    void openDataBase();
+    bool initDateBaseConnection();
+    bool openDataBase();
     void closeDataBase();
 
     AppInfoTable *q = nullptr;
diff --git a/libsearch/appdata/app-info-table.cpp b/libsearch/appdata/app-info-table.cpp
index 2f28351..8201547 100644
--- a/libsearch/appdata/app-info-table.cpp
+++ b/libsearch/appdata/app-info-table.cpp
@@ -25,7 +25,10 @@ AppInfoTablePrivate::AppInfoTablePrivate(AppInfoTable *parent) : QObject(parent)
             break;
     }
     qDebug() << "App info database currunt connection name:" << m_ConnectionName;
-    this->openDataBase();
+    if (!this->openDataBase()) {
+        Q_EMIT q->DBOpenFailed();
+        qWarning() << "Fail to open App DataBase, because:" << m_database->lastError();
+    }
 }
 
 bool AppInfoTablePrivate::setAppFavoritesState(QString &desktopfp, size_t num)
@@ -653,24 +656,26 @@ AppInfoTablePrivate::~AppInfoTablePrivate()
     this->closeDataBase();
 }
 
-void AppInfoTablePrivate::initDateBaseConnection()
+bool AppInfoTablePrivate::initDateBaseConnection()
 {
     m_database->setDatabaseName(APP_DATABASE_PATH + APP_DATABASE_NAME);
     if(!m_database->open()) {
         qWarning() << m_database->lastError();
-        QApplication::quit();
+        return false;
+//        QApplication::quit();
     }
+    return true;
 }
 
-void AppInfoTablePrivate::openDataBase()
+bool AppInfoTablePrivate::openDataBase()
 {
     *m_database = QSqlDatabase::addDatabase("QSQLITE", m_ConnectionName);
     m_database->setDatabaseName(APP_DATABASE_PATH + APP_DATABASE_NAME);
 
     if(!m_database->open()) {
-        qWarning() << m_database->lastError();
-        QApplication::quit();
+        return false;
     }
+    return true;
 }
 
 void AppInfoTablePrivate::closeDataBase()
diff --git a/libsearch/appdata/app-info-table.h b/libsearch/appdata/app-info-table.h
index ef50ac2..04cf34e 100644
--- a/libsearch/appdata/app-info-table.h
+++ b/libsearch/appdata/app-info-table.h
@@ -76,6 +76,8 @@ private:
     bool updateAppLaunchTimes(QString &desktopfp);
 
     AppInfoTablePrivate *d;
+Q_SIGNALS:
+    void DBOpenFailed();
 
 };
 }