单选题In which situation is the UNDO_RETENTION parameter be ignored， even if it is set to a value（）A
When the data file of the undo tablespace is autoextensibleB
When there are more than one undo tablespaces available in the databaseC
When the undo tablespac
题目
单选题
In which situation is the UNDO_RETENTION parameter be ignored， even if it is set to a value（）
A
When the data file of the undo tablespace is autoextensible
B
When there are more than one undo tablespaces available in the database
C
When the undo tablespace is of a fixed size and retention guarantee is not enabled
D
When the undo tablespace is autoextensible and retention guarantee is not enabled
