"Database" menu is used to check database status. If the database is very loaded, some of counters may overflow. All running database threads can be viewed from the "Processes" submenu. If you want to stop a long-running query, when in your browser, (query continues to run and consume processor time), database menu allows you to kill long running threads. Starting a long-run query ("Trends" or "Search" or "Interface" menu) may cause problems, because the web server or PHP can close the connection. You can view all of the data tables by clicking on the "Tables" link. The latest version also includes support for automatic database health check. Click on the Status->Database->Optimalization to run a database check. Visit Section 6.3, “Optimizing database” to get more information about better system performance.