V$BUFFER_POOL

Columns
   ___________________________
 
   BUFFERS
   TARGET_SIZE
   TARGET_BUFFERS
   PREV_SIZE
   PREV_BUFFERS
   LO_BNUM
   HI_BNUM
   LO_SETID
   HI_SETID
   SET_COUNT
   ID
   NAME
   BLOCK_SIZE
   RESIZE_STATE
   CURRENT_SIZE

Related:

V$CACHE
V$CLASS_PING 
V$DLM_CONVERT_LOCAL 
V$DLM_CONVERT_REMOTE 
V$DLM_LATCH 
V$DLM_MISC 
V$ENQUEUE_LOCK 
V$EVENT_NAME 
V$LATCH 
V$LATCHHOLDER 
V$LATCHNAME 
V$LATCH_CHILDREN 
V$LATCH_MISSES 
V$LATCH_PARENT 
V$LIBRARYCACHE 
V$LOCK 
V$_LOCK
V$LOCKED_OBJECT 
V$LOCKS_WITH_COLLISIONS 
V$LOCK_ACTIVITY 
V$LOCK_ELEMENT 
V$RESOURCE  
V$RESOURCE_LIMIT 
V$TRANSACTION_ENQUEUE