ava.sql.SQLInvalidAuthorizationSpecException Not authorized to access instance

cant understand why: 

i can access db no problem from development server, but on deployed app engine i cant access db.

i am connecting as root, not as any particular user/password.

jdbc:google:rdbms://book-server.appspot.com:book-server:books/books

error:

java.sql.SQLInvalidAuthorizationSpecException Not authorized to access instance: book-server.appspot.com:book-server:books

--
You received this message because you are subscribed to the Google Groups "Google Cloud SQL discuss" group.
To unsubscribe from this group and stop receiving emails from it, send an email to google-cloud-sql-discuss+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/google-cloud-sql-discuss/edb677b3-2359-42ce-9882-559b9c28c885%40googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.