To be able to work with the content and structure of a database, you need to connect to it. When you create a new connection to a database, DBeaver automatically connects to the new database, see Create Connection.
To connect to a database using an existing connection, in the Database Navigator or Projects view, click the connection and then click the Connect button in the toolbar or click Database -> Connect on the main menu:
You can also right-click the connection and click Connect on the context menu.
If a database connection exists but DBeaver is not connected to the database, the connection appears with its original icon (for example, for PostgreSQL database). When DBeaver connects to the database, the icon changes to signal the connected status: .
If DBeaver cannot connect to a database, the connection appears with an error sign: . If you attempt to connect to such a database, DBeaver displays an error message describing the cause for the error.