V$SUBCACHE

Columns
   ___________________________
 
   HEAP_ALOC
   OWNER_NAME
   NAME
   HEAP_NUM
   CACHE_ID
   HEAP_SZ
   HEAP_USED
   CACHE_CNT
   TYPE

Related Views:

V$CACHE
V$DB_OBJECT_CACHE 
V$LIBRARYCACHE 
V$ROWCACHE 
V$ROWCACHE_PARENT 
V$ROWCACHE_SUBORDINATE