EnsurepassQUESTION 91 Which two statements are true regarding undo tablespaces? (Choose two.)   A.      The database can have more than one undo tablespace. B.      The UNDO_TABLESPACE parameter is valid in both automatic and manual undo management. C.      Undo segments automatically grow and shrink as needed, acting as circular storage buffer for their assigned transactions. D.      An Read more [...]