Online Documentation for SQL Manager for Oracle
Connecting to databases
When the database registration is complete, you can establish connection to your database.
The simplest way to connect to a database is to double-click its alias in the Database Explorer tree. The same operation can be performed by selecting the Connect to Database item of the database context menu, or by using the Database | Connect to Database main menu item.
Alternatively, you can use the Shift+Ctrl+C shortcut or the 
Connect to Database toolbar button.
