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Exams1Z0-062Questions#67
Oracle

1Z0-062 · Question #67

1Z0-062 Question #67: Real Exam Question with Answer & Explanation

The correct answer is A: Increase the value of the ASM_POWER_LIMIT parameter.. A: ASM_POWER_LIMIT specifies the maximum power on an Automatic Storage Management instance for disk rebalancing. The higher the limit, the faster rebalancing will complete. Lower values will take longer, but consume fewer processing and I/O resources. * Normally a separate proces

Question

You administer an online transaction processing (OLTP) system whose database is stored in Automatic Storage 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 failure happens again?

Options

  • AIncrease the value of the ASM_POWER_LIMIT parameter.
  • BSet the DISK_REPAIR_TIME disk attribute to a lower value.
  • CSpecify the statement that adds the disk back to the disk group.
  • DIncrease the number of ASMB processes.
  • EIncrease the number of DBWR_IO_SLAVES in the ASM instance.

Explanation

A: ASM_POWER_LIMIT specifies the maximum power on an Automatic Storage Management instance for disk rebalancing. The higher the limit, the faster rebalancing will complete. Lower values will take longer, but consume fewer processing and I/O resources. * Normally a separate process is fired up to do that rebalance. This will take a certain amount of time. If you want it to happen faster, fire up more processes. You tell ASM it can add more processes by increasing the rebalance power. ASM Background Process Communicates with the ASM instance, managing storage and providing statistics Not B: A higher, not a lower, value of DISK_REPAIR_TIME would be helpful here. Not E: If you implement database writer I/O slaves by setting the DBWR_IO_SLAVES parameter, you configure a single (master) DBWR process that has slave processes that are subservient to it. In addition, I/O slaves can be used to "simulate" asynchronous I/O on platforms that do not support asynchronous I/O or implement it inefficiently. Database I/O slaves provide non-blocking, asynchronous requests to simulate asynchronous I/O.

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You administer an online transaction processing (OLTP) system... | 1Z0-062 Q#67 Answer | NerdExam