Oracle PL/SQL/System Tables Views/v buffer pool

select name, block_size, current_size from v$buffer_pool

  
SQL>
SQL> alter system set db_keep_cache_size=2M;
System altered.
SQL>
SQL> select name, block_size, current_size from v$buffer_pool;
KEEP                       8192            4
DEFAULT                    8192          164
2 rows selected.
SQL>
SQL>