单选题A database instance is using an Automatic Storage Management (ASM) instance, which has a disk group, DGROUP1, created as follows: SQL> CREATE DISKGROUP dgroup1 NORMAL REDUNDANCY FAILGROUP controller1 DISK '/devices/diska1', '/devices/diska2' FAILGROUP

第1题：

You work as a database administrator at Certkiller .com. Your production database uses an Automatic Storage Management （ASM） instance to manage its files. You want to add a new disk group to the ASM instance to manage the increased data load. What action would you perform to include the new disk group in the ASM instance without causing any impact on the currently connected users？（）

• A、 mount the new disk group in the ASM instance
• B、 restart the ASM instance and the production database instance
• C、 register the new disk groups in the production database instance
• D、 restart the ASM instance without restarting the production database instance
• E、 include the new disk group in the ASM_DISKSTRING parameter in the parameter file and restart the ASM instance

第2题：

Which two statements are true regarding an Automatic Storage Management (ASM) instance? （）

• A、As ASM instance mounts an ASM control file
• B、An ASM instance uses the ASMB process for rebalancing of disks within a disk group
• C、Automatic Memory Management is enabled in an ASM instance even when the MEMORY_TARGET parameter is not set explicitly
• D、An RDBMS instance gets connected to an ASM instance using ASMB as a foreground process when the database instance is started

第3题：

第4题：

As the DBA， you run the following query on your ASM instance. What is the implication of the results of the query？（） SQL> select group_number， name， state from v$ASM_DISKGROUP；  GROUP_NUMBER NAME STATE  0 DGROUP1 DISMOUNTED  2 DGROUP2 MOUNTED  3 DGROUP3 MOUNTED  

• A、 The DGROUP1 disk group was unmounted by another DBA.
• B、 A datafile has been lost， causing the ASM disk group DGROUP1 to go into the DISMOUNTED state
• C、 One of the redundant disks （DGROUP1） has been lost in a disk group.
• D、 This query has no meaning in an ASM instance.
• E、 A disk associated with a disk group was discovered after the ASM instance initially opened.

第5题：

A database instance is using an Automatic Storage Management (ASM) instance, which has a disk group, DGROUP1, created as follows: SQL> CREATE DISKGROUP dgroup1 NORMAL REDUNDANCY FAILGROUP controller1 DISK '/devices/diska1', '/devices/diska2' FAILGROUP controller2 DISK '/devices/diskb1', '/devices/diskb2' ; What happens when the whole CONTROLLER1 Failure group is damaged?（）

• A、The transactions that use the disk group will halt.
• B、The mirroring of allocation units occurs within the CONTROLLER2 failure group.
• C、The data in the CONTROLLER1 failure group is shifted to the CONTROLLER2 failure group and implicit rebalancing is triggered.
• D、The ASM does not mirror any data and newly allocated primary allocation units (AU) are stored in the CONTROLLER2 failure group.

第6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？（）

• A、The rebalancing of the disk group would be stopped.
• B、The rebalancing of the disk group would be completed as fast as possible.
• C、The command would result in an error because the value of POWER cannot be 0.
• D、The rebalancing of the disk group would be completed without affecting the disk group DG3.
• E、The command would result in an error because the disk groups cannot be manually rebalanced.

第7题：

Your production database uses an Automatic Storage Management （ASM） instance to manage its files. You want to add a new disk group to the ASM instance to manage the increased data load. What action would you perform to include the new disk group in the ASM instance without causing any impact on the currently connected users？（）

• A、mount the new disk group in the ASM instance
• B、restart the ASM instance and the production database instance
• C、register the new disk groups in the production database instance
• D、restart the ASM instance without restarting the production database instance
• E、include the new disk group in the ASM_DISKSTRING parameter in the parameter file and restart the ASM instance

第8题：

第9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？（）

• A、 This command would result in an error because the disk group is not empty.
• B、 The command would distribute the contents of the specified disk group among all other disk groups and then drop the specified disk group.
• C、 The command would result in the contents being moved to the parent disk group and dropping of the disk group.
• D、 The command would result in the disk group being marked as INVALID because it cannot be dropped.
• E、 The command would drop the disk group， ignoring the EXCLUDING CONTENTS option.

第10题：

A database is stored in an Automatic Storage Management (ASM) disk group, disk group, DGROUP1 with SQL: There is enough free space in the disk group for mirroring to be done. What happens if the CONTROLLER1 failure group becomes unavailable due to error of for maintenance?（）

• A、Transactions and queries accessing database objects contained in any tablespace stored in DGROUP1 will fall.
• B、Mirroring of allocation units will be done to ASM disks in the CONTROLLER2 failure group until the CONTROLLER1 for failure group is brought back online.
• C、The data in the CONTROLLER1 failure group is copied to the controller2 failure group and rebalancing is initiated.
• D、ASM does not mirror any data until the controller failure group is brought back online, and newly allocated primary allocation units (AU) are stored in the controller2 failure group, without mirroring.
• E、Transactions accessing database objects contained in any tablespace stored in DGROUP1 will fail but queries will succeed.