Connecting and querying a container

Hi

Oracle 12c container instance with Plugable

When connecting to the instance with none DBA user and running the query:

SELECT name ,open_mode ,status,TOTAL_SIZE FROM v$pdbs b,dba_pdbs a where a.pdb_name=b.name ORDER BY name;

we have got : no rows selected

When using the same user but connecting " as sysdba "

we do get rows.

Q1 : Is connecting as sysdba is the only way to do it ?

Q2 : Why it does not work when connecting to a remote database ?

Thanks

Eyal