In the Pet Store demo, which I have deployed on 9iAS, tries to connect to the 9iDB, r2, I get the following error:

Unable to Connect to Database
Database Connection is closed: Confirm that you have started your database

In the database, I have the ORACLE instance started and the database mounted and opened. Is there anythign else I have to do to 'start' the database, so that 9iAS can use it?