多选题You work as a database administrator for Certkiller .com. You want to create your database with the automatic undo management feature enable.Which two tasks must you perform to achieve this？（）ASet the UNDO_RETENTION parameter to AUTO.BCreate an initial undo segment in undotablespace.CSet the UNDO_RETENTION parameter to 900 or moreDSet the initialization parameter UNDO_MANAGEMENT to AUTOESet the UNDO_MANAGEMENT parameter to the name of an undotablespace
多选题
You work as a database administrator for Certkiller .com. You want to create your database with the automatic undo management feature enable.Which two tasks must you perform to achieve this？（）
A
Set the UNDO_RETENTION parameter to AUTO.
B
Create an initial undo segment in undotablespace.
C
Set the UNDO_RETENTION parameter to 900 or more
D
Set the initialization parameter UNDO_MANAGEMENT to AUTO
E
Set the UNDO_MANAGEMENT parameter to the name of an undotablespace
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