Search notes:

Oracle: V$MEMORY_TARGET_ADVICE

v$memory_target_advice gives a rough estimation on the influence of different values for memory_target on DB time. 
select
   mta.memory_size,
   mta.estd_db_time_factor,
   mta.estd_db_time,
   mta.memory_size_factor,
   mta.version,
   mta.con_id
from
   v$memory_target_advice mta
order by
   mta.memory_size
;

See also

The information in v$sga_target_advice is similar to that provided by v$memory_target_advice.
init parameters

Index

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 8 attempt to write a readonly database in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php:78 Stack trace: #0 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(78): PDOStatement->execute(Array) #1 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(30): insert_webrequest_('/notes/developm...', 1758205466, '216.73.216.150', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/development/databases/Oracle/installed/dynamic-performance-views/memory/target_advice(53): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78