V$TABLESPACE

Columns
   ___________________________
 
   TS#
   NAME
   INCLUDED_IN_DATABASE_BACKUP

Related:

V$ACTIVE_INSTANCES 
V$COMPATIBILITY 
V$COPY_CORRUPTION 
V$DATABASE 
V$DATAFILE 
V$DBFILE 
V$DBLINK 
V$DB_PIPES 
V$INSTANCE 
V$LICENSE 
V$OFFLINE_RANGE 
V$OPTION 
V$SGA 
V$VERSION