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单选题Which statement is true about the Manageability Monitor （MMON） background proces（）A It transfers statistics from memory to disk at regular intervals.B It coordinates the rebalance activity for disk groups when ASM is used.C It communicates with the Aut

题目
单选题
Which statement is true about the Manageability Monitor （MMON） background proces（）
A

It transfers statistics from memory to disk at regular intervals.

B

It coordinates the rebalance activity for disk groups when ASM is used.

C

It communicates with the Automatic Storage Management （ASM） instance on behalf of the databaseinstance.

D

It performs dynamic memory management when Automatic Shared Memory Management is enabledfor the database instance.

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相似问题和答案

第1题：

You administer an online transaction processing (OLTP) system whose database is stored in AutomaticStorage Management (ASM) and whose disk group use normal redundancy.One of the ASM disks goes offline, and is then dropped because it was not brought online before DISK_REPAIR_TIME elapsed.When the disk is replaced and added back to the disk group, the ensuing rebalance operation is too slow.Which two recommendations should you make to speed up the rebalance operation if this type of failurehappens again?（）

A. Increase the value of the ASM_POWER_LIMIT parameter.

B. Set the DISK_REPAIR_TIME disk attribute to a lower value.

C. Specify the statement that adds the disk back to the disk group.

D. Increase the number of ASMB processes.

E. Increase the number of DBWR_IO_SLAVES in the ASM instance.


参考答案：A, D

第2题：

Which two are the uses of the ASM metadata backup and restore （AMBR） feature？（）

  • A、 It can be used to back up all data on ASM disks.
  • B、 It can be used to recover the damaged ASM disk group along with the data.
  • C、 It can be used to gather information about a preexisting ASM disk group with disk paths，disk name，failure groups，attributes templates，and alias directory structure.
  • D、 It can be used to re-create the ASM disk group with its attributes.

正确答案:C,D

第3题：

As shown in the diagram, in－memory statistics are transferred to the disk at regular intervals. Which background process performs this activity?()

A. CKPT

B. SMON

C. MMON

D. DBWR


参考答案：C

第4题：

You are managing an Oracle 11g database with ASM storage, for which the COMPATIBLE initialization parameter is set to 11.1.0. In the ASM instance, the COMPATIBLE.RDBMS attribute for the disk group is set to 10.2 and the COMPATIBLE.ASM attribute is set to 11.1. Which two statements are true in this scenario for the features enabled for ASM? （）

  • A、The ASM-preferred mirror read feature is enabled.
  • B、The ASM supports variable sizes for extents of 1, 8, and 64 allocation units.
  • C、The ASM disk is dropped immediately from a disk group when it becomes unavailable.
  • D、The RDBMS always reads the primary copy of a mirrored extent of the ASM disk group.

正确答案:A,B

第5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

正确答案:C,D

第6题：

Which two statements are true about variable extent size support for large ASM files?()

A. The metadata used to track extents in SGA is reduced.

B. Rebalance operations are completed faster than with a fixed extent size

C. An ASM Instance automatically allocates an appropriate extent size.

D. Resync operations are completed faster when a disk comes online after being taken offline.

E. Performance improves in a stretch cluster configuration by reading from a local copy of an extent.


参考答案：A, C

第7题：

What is the net effect of the following command？（）   alter diskgroup dgroup1 drop disk abc；

  • A、 The disk ABC will be dropped from the disk group. Since you did not issue a rebalance command，the data on that disk will be lost.
  • B、 The command will raise an error indicating that you need to rebalance the disk group to remove the data from that disk prior to dropping the disk.
  • C、 The disk group will be automatically rebalanced during the drop operation. Once the rebalancing is complete，the disk will be dropped.
  • D、 This command will fail because you cannot drop a specific disk in an ASM disk group.
  • E、 The disk drop command will be suspended for a predetermined amount of time，waiting for you to also issue an alter diskgroup rebalance command. Once you have issued the rebalance command，ASM will proceed to rebalance the disk group and then drop the disk.

正确答案:C

第8题：

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

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


参考答案：C, D

第9题：

Which statement is true about the Manageability Monitor （MMON） background proces（）

  • A、It transfers statistics from memory to disk at regular intervals.
  • B、It coordinates the rebalance activity for disk groups when ASM is used.
  • C、It communicates with the Automatic Storage Management （ASM） instance on behalf of the databaseinstance.
  • D、It performs dynamic memory management when Automatic Shared Memory Management is enabledfor the database instance.

正确答案:A

第10题：

Which background process coordinates the rebalance activity for disk groups？（）

  • A、 ORBn
  • B、 OSMB
  • C、 RBAL
  • D、 ASMn

正确答案:C

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