Making a New Connection
After you start SQLyog, you have to enter the details of MySQL server you want to connect to. You must connect to a MySQL server before you can perform any activities with the software. Check out more how to make a database connection.
New Window Using Current Settings
To open a new connection with same server profile of the current connection select File -> New Window Using Current Settings (or press Ctrl+N). It will establish another connection with the same details without any further specification.
Disconnecting A Connection
Select File -> Disconnect (or press Ctrl+F4) to disconnect the current active connection. To re-connect (or establish another connection), selectConnect option (or press Ctrl+M).
Disconnecting All Connections
Select File -> Disconnect All to disconnect from all current active connections.