Components of Oracle DB BUFFER CACHE

What are the components of DB BUFFER CACHE?

Below mentioned are the components of db buffer cache,

• Default pool (where blocks are normally buffered)
• Big table cache (optional part of the default pool; uses a temperature based algorithm instead of the LRU based one)
• Keep pool - data buffers for frequently running queries
• Recycle pool - data buffers for least running queries
• Non-default buffer pools (used for non-standard block sizes of 2, 4, 16 or 32 KB, when you have different tablespaces with different db block sizing)
• Database Smart Flash Cache (used in flash cache)
• Least Recently Used list (LRU)
• Checkpoint queue
• Flash Buffer Area