多选题Which three pieces of information are considered while deciding the size of the undo tablespace in your database？（）Athe size of an undo blockBthe size of the redo log filesCundo blocks generated per secondDthe size of the database buffer cacheEthe valu
题目
多选题
Which three pieces of information are considered while deciding the size of the undo tablespace in your database？（）
A
the size of an undo block
B
the size of the redo log files
C
undo blocks generated per second
D
the size of the database buffer cache
E
the value of the UNDO_RETENTION parameter