多项选择题
A. Backup compression is disabled by default.
B. Backup compression can be used with both backup sets and image copies.
C. Backup compression cannot be enabled using the CONFIGURE command.
D. Backup compression works only if the COMPATIBILITY parameter is set to 9.0.0.0 or higher.
E. Backup compression applies to only backup sets.
F. Backup compression applies to only image copies.
多项选择题 Exhibit： View the Exhibit and examine the properties of the USERS tablespace. You execute the following statement to shrink the TRANS table existing on the USERS tablespace： SQL> ALTER TABLE trans SHRINK SPACE CASCADE； Which objects would be affected by this command？（）
多项选择题 YourdatabaseoperatesinARCHIVELOGmodeandallthetablespacesareonline.Duetoausererror，youdecidedtoperformanincompleterecovery.Whichtwotaskswouldyouberequiredtoperformintherecoveryprocess？（）
单项选择题 In your Automatic Storage Management （ASM） instance， one of the nonempty disk groups， DGROUP1， is no longer required and you want this disk group to be removed. You execute the following command to achieve this objective： DROP DISKGROUP dgroup1 EXCLUDING CONTENTS； What would be the result of this command？（）