You want to migrate your database to ASM， so you have done a clean shutdown， made a closed backup of the entire You wa database， noted the location of your control files and online redo log files， and changed your spfile to use OMF. The last step is to run an RMAN script to do the conversion. 
Using the following steps，what is the correct order in which the following RMAN commands should be executed？（）  
1. STARTUP NOMOUNT 
2. ALTER DATABASE OPEN RESETLOGS 
3. SQL "ALTER DATABASE RENAME ，，logfile1 path TO ，，+dgrp4 ，，" # plus all other logfiles 
4. SWITCH DATABASE TO COPY 
5. BACKUP AS COPY DATABASE FORMAT ，，+dgrp4
6. ALTER DATABASE MOUNT 
7. RESTORE CONTROLFILE FROM ，，controlfile_location

单项选择题As DBA for the Rebel Alliance you have decided that you need to facilitate some redundancy in your database. Using ASM， you want to create a disk group that will provide for the greatest amount of redundancy for your ASM data （you do not have advanced SAN mirroring technology available to you， unfortunately）.  Which of the following commands would create a disk group that would offer the maximum in data redundancy？（）

A.A
B.B
C.C
D.D
E.E

单项选择题WhenanASMinstancereceivesaSHUTDOWNNORMALcommand，whatcommanddoesitpassontoalldatabaseinstancesthatrelyontheASMinstancesdiskgroups？（）

A. TRANSACTIONAL
B. IMMEDIATE
C. ABORT
D. NORMAL

单项选择题WhichinitializationparameterinanASMinstancespecifiesthediskgroupstobeautomaticallymountedatinstancestartup？（）

A. ASM_DISKMOUNT
B. ASM_DISKGROUP
C. ASM_DISKSTRING
D. ASM_MOUNTGROUP

单项选择题WhatisthedefaultAUsizeofanASMdiskgroup？WhatisthemaximumAUsizeinanASMdiskgroup？（）

A. 100KB default， 10TB maximum
B. 256KB default， 1024MB maximum
C. 10MB default， 126PB maximum
D. 64KB default， 1EB maximum
E. 1MB default， 64MB maximum

单项选择题WhatistheresultofincreasingthevalueoftheparameterASM_POWER_LIMITduringarebalanceoperation？（）

A. The ASM rebalance operation will likely consume fewer resources and complete in a shorter amount of time.
B. The ASM rebalance operation will consume fewer resources and complete in a longer amount of time.
C. The ASM rebalance operation will be parallelized and should complete in a shorter amount of time.
D. There is no ASM_POWER_LIMIT setting used in ASM.
E. None of the above.