After your database Service Instance is online, you can use any standard SQL client application to connect to the instance.
Connecting to a database Service Instance requires its fully-qualified distinguished name (FQDN), as well as the information that you specified in Database Instance Configuration when you created the instance: the database name, database server port number, and administrative user credentials.
You can find the FQDN, database name, database server port number, and the administrative user credentials for a running database Service Instance in the Database information Details tab:
Select Databases from the left navigation pane.
This action displays the Databases view, a table that lists the provisioned database Service Instances.
Examine the databases listed in the table, identify the database whose connection parameters you wish to locate, and navigate to that table row.
Click the database Instance Name.
The database information Details tab displays, which includes the required connection parameter settings:
Connecting to a PostgreSQL Database Service Instance describes connecting specifics for PostgreSQL.
Connecting to a MySQL Database Service Instance describes connecting specifics for MySQL.