JPNTestにIT業界のエリートのグループがあって、彼達は自分の経験と専門知識を使ってOracle 1z1-902認証試験に参加する方に対して問題集を研究続けています。

Oracle 1Z1-902認定試験は、専門家がOracle Exadata Database Machine X8Mシステムの実装と管理におけるスキルと知識を検証する絶好の機会です。この試験に合格すると、新しいキャリアの機会が増加し、収益の可能性が高まります。この試験を受けることに関心のある専門家は、データベース管理、データベース設計、Oracle Technologiesの強力なバックグラウンドを持つ必要があり、Oracle Exadata Database Machine X8Mに関連する幅広いトピックを研究する準備をする必要があります。

Oracle Exadata Database Machine X8Mは、高性能なデータベースソリューションを必要とする組織にとって強力なツールです。金融サービス、医療などのデータ可用性とパフォーマンスが重要な業界で使用されるミッションクリティカルなデータベースに必要なパフォーマンスを提供するように設計されています。試験は、Exadata Database Machineの実装と管理を担当するITプロフェッショナルを対象としています。

Oracle Exadata Database Machine X8Mは、データベース操作の最大の効率性と拡張性を実現するために設計された高性能コンピューティングプラットフォームです。このマシンは、Oracle Databaseのパワーと、Oracle Databaseワークロードに特化したハードウェアおよびソフトウェアのパフォーマンスを組み合わせています。このマシンは、金融機関、医療機関、政府機関など、高性能データベース処理が必要なビジネスに最適です。

>> 1z1-902受験方法 <<

1z1-902無料試験、1z1-902最新資料

Oracle Exadata Database Machine X8M Implementation Essentials試験は大多数の受験者にとって難しい難題であることは広く受け入れられていますが、関連する1z1-902認定はこの分野の労働者にとって非常に重要であるため、多くの労働者はこの課題に取り組む必要があります。 幸いなことに、この種の質問について心配する必要はありません。このWebサイトJPNTestで最適なソリューションを見つけることができるので、1z1-902トレーニング資料です。 テクノロジー、人材、施設への継続的な投資により、当社Oracleの未来はこれまでになく輝かしく見えました。 優れた1z1-902試験問題により、1z1-902試験に合格します。

Oracle Exadata Database Machine X8M Implementation Essentials 認定 1z1-902 試験問題 (Q19-Q24):

質問 # 19
Which two statements are true about enabling write-back flash cache?

  • A. When enabling write-back flash cache in a non-rolling manner, you need to drop the Persistent Memory Commit Accelerator (PMEMLog) first.
  • B. Write-back flash cache is on by default for High Capacity Storage Servers in High Redundancy configurations.
  • C. Before write-back flash cache is enabled, you need to drop the Flash Cache first.
  • D. Write-back Flash Cache cannot be used on Extreme Flash Storage Servers.
  • E. When enabling write-back flash cache in a rolling manner, DBCLI should be used to inactivate the grid disks on all cells first.

正解:A、E

解説:
When enabling write-back flash cache in a rolling manner, it is important to use DBCLI to inactivate the grid disks on all cells first so that all the cells are in the same state before the process is started. In a non-rolling manner, you must drop the Persistent Memory Commit Accelerator (PMEMLog) first. Write-back flash cache is not on by default for High Capacity Storage Servers in High Redundancy configurations and can be used on Extreme Flash Storage Servers. It's also important to check if it's necessary to drop the flash cache before enabling write-back flash cache.

 

質問 # 20
Examine these commands:
1. Execute "crscti stop cluster -all" as the grid user from one database server.
2. Execute "crscti stop cluster -all" as root from one database server.
3. Power off all network switches.
4. Execute "crscti stop cluster" as root from one database server.
5. Execute "crscti stop cluster" as the grid user from one database server.
6. Power off the rack using the power switches on the PDUs.
7. Execute "shutdown -h now" on all database servers.
8. Execute "shutdown -h now" on all Exadata storage servers.
Which is the correct order or the required commands to completely power off an Exadata Database Machine in an orderly fashion?

  • A. 1, 8, 7, 3 and 6
  • B. 5, 8, 7, and 6
  • C. 2, 8, 7, 3, and 6
  • D. 2, 7, 8, and 6
  • E. 4, 7, 8, 3, and 6

正解:D

 

質問 # 21
For which four component failures on an X9M Database Machine does Auto Service Request (ASR) raise service requests?

  • A. Cisco management switch
  • B. RoCE network interface cards in the database servers
  • C. Cisco RDMA over Converged Ethernet (RoCE) switches
  • D. power supplies in the database servers
  • E. power distribution units
  • F. fans in the storage servers
  • G. RoCE network interface cards in the storage servers

正解:C、D、E、G

解説:
According to the Oracle Auto Service Request (ASR) documentation1, ASR raises service requests for qualified Oracle products that are detected with specific faults. The qualified Exadata products include2:
Database servers
Storage servers
InfiniBand switches
Cisco switches (X8M and later systems)
Power distribution units (PDUs)

 

質問 # 22
You want to monitor how a large production table is accessed. Especially, you are interested to see how the access on that particular table leverages the benefits of the Exadata Platform.
Which two actions are NOT appropriate for that purpose?

  • A. You query v$segment_statistics and filter for the Object ID of your table from dba_objects and the the column STATISTIC_NAME='optimized physical reads'.
  • B. You run the CellCli-command list activerequest , filtering for the attributes ioReason and objectNumber, that you specify as 'Smart Scan' and the Object ID of your table from DBA_OBJECTS.
  • C. You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table.
  • D. YOU query VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table.

正解:C、D

解説:
A) YOU query VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table. This does not show how much data was filtered by Smart Scan, but only how much data was returned after Smart Scan12.
C) You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table. This does not show how much data was filtered by Smart Scan for a specific table, but only for all tables in a session12.
https://www.databasejournal.com/oracle/monitoring-smart-scans-in-oracle-exadata/

 

質問 # 23
How do ASM failure groups provide redundancy?

  • A. Failure groups contain all ASM disks in a single storage server preventing mirror copies being written to the same storage server.
  • B. They ensure that the ASM Flex instances are enabled on a maximum of two database servers or VMs per cluster.
  • C. Failure groups are created for each grid disk to ensure mirror copies are written to the same storage server for faster recovery after a physical disk failure.
  • D. Extended Redundancy mirrors data across data centers providing the highest levels of data protection.

正解:C

解説:
Failure groups provide redundancy in Oracle Exadata Database Machine X9M by ensuring that mirror copies of the data are written to different storage servers [1][2]. This prevents the potential for mirror copies to be written to the same server, which would cause a data loss if that server were to experience a physical disk failure. Furthermore, failure groups help to ensure that the ASM Flex instances are enabled on a maximum of two database servers or VMs per cluster, providing an extra layer of data protection. Additionally, Extended Redundancy mirrors data across data centers, providing the highest levels of data protection. Reference: Oracle Exadata Database Machine X9M Implementation Essentials [1][2], Chapter 5: Configuring Oracle ASM.

 

質問 # 24
......

誰もが私たちの人生の貴重を認識する必要があります。時間を無駄にすることはできないので、目標をまっすぐに達成するための良い方法が必要です。もちろん、最新の1z1-902試験トレントが最適です。 1z1-902試験の質問から、認定試験の知識だけでなく、質問に迅速かつ正確に回答する方法を学ぶことができることをお約束します。今、1z1-902テストトレントのデモを無料でダウンロードして、すばらしい品質を確認できます。

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