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あまりにも多くのIT認定試験と試験に関連する参考書を見ると、頭が痛いと感じていますか。一体どうしたらでしょうか。どのように選択すべきなのかを知らないなら、私は教えてあげます。最近非常に人気があるOracleの1z1-902認定試験を選択できます。この認定試験の資格を取得すれば、あなたは大きなメリットを得ることができます。それに、より効率的に試験の準備をするために、Xhs1991の1z1-902試験問題集を選択したほうがいいです。それはあなたが試験に合格する最善の方法です。

Oracle 1z1-902 認定試験の出題範囲：

トピック 出題範囲
トピック 1
  • Install and configure Oracle Exadata using Oracle Exadata Deployment Assistant
  • Use Cloud Control or DBMCLI to monitor Exadata Database Machine Database Servers
トピック 2
  • Describe the deployment options of Exadata including Virtualization and Bare Metal
  • Add additional storage to Exadata Database Servers
トピック 3
  • Describe Oracle Configuration Manager (OCM) and how it relates to Exadata Database Machine
  • Explain the impact of various diskgroup failure group choices
トピック 4
  • Safely shut down a single Exadata Storage Server
  • Describe the function of Oracle Exadata Configuration Assistant and Oracle Exadata Deployment Assistant
トピック 5
  • Add additional database server to a physical Exadata Database Machine using Oracle Exadata Deployment Assistant
  • Create and configure Automatic Storage Management disk groups using Exadata
トピック 6
  • Describe physical site requirements and safety best practices for implementing Exadata
  • Describe Exadata Remote Direct Memory Access (RDMA) and Client network architecture
トピック 7
  • Describe the network integration options of Exadata Database Machine
  • Use Enterprise Manager to discover Exadata Database Machine
トピック 8
  • Describe the Auto Service Request (ASR) function and how it relates to Exadata Database Machine
  • Set up Automatic Service Request (ASR) on the Exadata Database Machine
トピック 9
  • Describe the monitoring recommendations for Exadata Database Machine database servers
  • Back up the Exadata Database Machine and databases on Exadata
トピック 10
  • Monitor Exadata Storage Server and Network using Command line or Cloud control
  • Connect Exadata Database Server in various scenarios, including client and backup networks
トピック 11
  • Use Exadata Software to deploy an update to an Exadata Database Machine without downtime
  • Configure Exadata Database virtual deployment using Oracle Exadata Deployment Assistant
トピック 12
  • Use Exadata Software to troubleshoot client network disconnect
  • Exadata Database Machine Architecture and Key Capabilities
トピック 13
  • Use the CellCLI, ExaCLI, DCLI and ExaDCLI Exadata administration tools in various situations
  • Reconfigure the Exadata Database Machine to use a single power cable

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Oracle Exadata Database Machine X8M Implementation Essentials 認定 1z1-902 試験問題 (Q45-Q50):

質問 # 45
You are concerned about the operating temperature of the database servers in your Exadata Full Rack and want to be alerted if the server exceeds 30C.
What command should use use to generate alerts for such an event?

  • A. dbmcli -e "create threshold ds_temp comparison='>', critical=30" on each database server
  • B. dbmcli -e "alert metriccurrent ds_temp where metricValue > 30" on each database server
  • C. dbmcli -e "set alert ds_temp> 30" on each database server
  • D. dbmcli -e "set threshold ds_temp comparison=' >', critical=30" on each database server

正解：D 解説：
The Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (page 5-54) recommends using the dbmcli command to set thresholds on metrics, such as temperature. To do this, you should use the following command:
dbmcli -e "set threshold ds_temp comparison=' >', critical=30" on each database server.
This will generate an alert if the temperature exceeds 30C.
質問 # 46
What is the maximum DRAM capacity you can expand an X9M-2 DB Server?

  • A. 2048GB
  • B. 512GB
  • C. 768GB
  • D. 1024GB
  • E. 384GB
  • F. 1536GB

正解：D 解説：
According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book, the maximum DRAM capacity you can expand an X9M-2 DB Server is 1024GB. This is the maximum amount of DRAM that can be installed in the server. The specific steps for adding DRAM are outlined in the book and can be referenced here: https://docs.oracle.com/cd/E8092001/E80920/html/x9mhardware_memory.html.
質問 # 47
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. 5, 8, 7, and 6
  • B. 2, 8, 7, 3, and 6
  • C. 4, 7, 8, 3, and 6
  • D. 2, 7, 8, and 6
  • E. 1, 8, 7, 3 and 6

正解：D
質問 # 48
You have been asked to investigate why an Exadata Database Server stopped communicating on the client network for 10 minutes over the past weekend.
Which command would help investigate this?

  • A. # /opt/oracle.SupportTools/exachk/exachk -from <FridaysDate>17:00:00 -to <SundaysDate>23:59:00
  • B. # /opt/oracle.SupportTools/ibdiagtools/netcheck/runDiagnostics.pm -from <FridaysDate>17:00:00 -to <SundaysDate>23:59:00
  • C. # /opt/oracle.ExaWatcher/GetExaWatcherResults.sh -from <FridaysDate>17:00:00 -to <SundaysDate>23:59:00
  • D. $ ${ORACLEHOME}/suptools/tfa/release/tfahome/bin/tfact1 -from <FridaysDate>17:00:00 -to <SundaysDate>23:59:00

正解：B
質問 # 49
How do ASM failure groups provide redundancy?

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

正解：B
質問 # 50
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