多项选择题
A.the CONVERT command of RMAN
B.Data Pump Export and Import into the same database
C.conventional export and import into the same database
D.the BACKUP DATABASE and RESTORE DATABASE commands of RMAN
E.the BACKUP AS COPY DATABASE and SWITCH DATABASE TO COPY command of RMAN
单项选择题 YourproductiondatabaseusesanAutomaticStorageManagement（ASM）instancetomanageitsfiles.YouwanttoaddanewdiskgrouptotheASMinstancetomanagetheincreaseddataload.WhatactionwouldyouperformtoincludethenewdiskgroupintheASMinstancewithoutcausinganyimpactonthecurrentlyconnectedusers？（）
单项选择题 You have a disk group， DGROUP1， with three disks and NORMAL redundancy. You execute the following command to create a template for the disk group： ALTER DISKGROUP dgroup1 ADD TEMPLATE my_temp ATTRIBUTES （MIRROR FINE） Which statement is true？（）
单项选择题 You are using an Automatic Storage Management （ASM） instance to manage the database files of your production database. After adding a new disk group to the ASM instance， you execute the following command： ALTER DISKGROUP dg3 REBALANCE POWER 0 What would be the result of this command？（）