ORACLE 1Z1-902 DUMPS PDF - PASS EXAM IMMEDIATELY (2025)

Oracle 1z1-902 Dumps PDF - Pass Exam Immediately (2025)

Oracle 1z1-902 Dumps PDF - Pass Exam Immediately (2025)

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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q23-Q28):

NEW QUESTION # 23
Which dbmcli command is NOT valid on Exadata X9M?

  • A. dbmcli -e "LIST ALERTHISTORY WHERE agelnMinutes < 15"
  • B. dbmcli -e "LIST IBPORT DETAIL"
  • C. dbmcli -e "LIST METRICHISTORY WHERE name LIKE 'DS_.*'"
    B) dbmcli -e "LIST METRICCURRENT WHERE name = 'DS_TEMP' "

Answer: A


NEW QUESTION # 24
You are planning the monitoring configuration for your Exadata X9M Database Machine.
Which three components are monitored directly through the use of Exadata-specific Enterprise Manager Plug-Ins?

  • A. the storage server ILOM
  • B. Oracle clusterware on the database server
  • C. ASM instances
  • D. the RDMA over Converged Ethernet (RoCE) switches
  • E. Hybrid Columnar Compression (HCC) ratios on Extended (XT) storage servers
  • F. the Power Distribution Units (PDUs)

Answer: B,C,E

Explanation:
Exadata-specific Enterprise Manager Plug-Ins are used to monitor different components of the Exadata Database Machine.
1. ASM instances: The Automatic Storage Management (ASM) instances can be monitored directly through the use of Exadata-specific Enterprise Manager Plug-Ins. This allows you to monitor the storage space, disk usage, and performance of the ASM instances.
2. Hybrid Columnar Compression (HCC) ratios on Extended (XT) storage servers: The HCC ratios on Extended (XT) storage servers can be monitored directly through the use of Exadata-specific Enterprise Manager Plug-Ins. This allows you to monitor the compression ratios and performance of the storage servers.
3. Oracle clusterware on the database server: The Oracle clusterware on the database server can be monitored directly through the use of Exadata-specific Enterprise Manager Plug-Ins. This allows you to monitor the health and performance of the clusterware.


NEW QUESTION # 25
Which are two valid reasons for executing an X9M-2 Exadata storage server rescue procedure?

  • A. the failure of both physical M.2 disks
  • B. the failure of physical disk 1
  • C. corruption in a normal or high redundancy ASM diskgroup
  • D. accidental loss of all data from all griddisks in a storage server
  • E. the failure of physical disk 0 and 11
  • F. moving all disks from one cell to another as part of a chassis-level component failure
  • G. corruption in the / (root) filesystem

Answer: E,G

Explanation:
The rescue procedure is necessary when system disks fail, the operating system has a corrupt file system, or there was damage to the boot area. If only one system disk fails, then use CellCLI commands to recover. In the rare event that both system disks fail simultaneously, you must use the Exadata Storage Server rescue functionality provided on the Oracle Exadata Storage Server Software CELLBOOT USB flash drive.


NEW QUESTION # 26
A new Exadata Quarter Rack with 2 Database Servers and 3 HC Storage Servers and 3-phase 15kVA PDUs is being installed in a Data Center. However, the Data Center is only providing enough power for a single cable from each PDU.
Which statement is correct?

  • A. The installation cannot proceed until two power feeds are available per PDU.
  • B. The power cables from the servers to the PDUs can be rearranged inside the rack following OECA guidance to utilize a single PDU power cable.
  • C. A splitter cable can be used to provide power to all PDU cables.
  • D. The installation can go ahead, no change is required.

Answer: A

Explanation:
An Exadata Quarter Rack with 2 Database Servers and 3 HC Storage Servers and 3-phase 15kVA PDUs would typically require two power feeds per PDU, one for each of the two power distribution units (PDUs) in the rack. A single power feed per PDU is not sufficient to provide the necessary power to the servers and storage in the rack.
The installation cannot proceed until two power feeds are available per PDU. According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1][2], it is recommended that each PDU should have at least two power feeds from different power sources in the data center. This is to ensure redundancy and avoid any power interruption due to power failure on one of the power sources. Splitter cables are not recommended, as they can reduce efficiency and increase the risk of overheating. Rearranging the power cables within the rack is not recommended either, as it does not provide the necessary redundancy for the PDU.


NEW QUESTION # 27
Which two options describe the flash memory capabilities of the Exadata X9M-2 database and storage severs?

  • A. 8 x 6.4 TB NVMe flash cards on the Extreme Flash (EF) storage server
  • B. 4 x 6.4 TB NVMe flash cards on the High Capacity (HC) storage server
  • C. 4 x 6.4 TB NVMe flash cards on the database server
  • D. 8x 6.4 TB NVMe flash cards on the Extended (XT) storage server
  • E. No flash storage on the database server

Answer: A,B

Explanation:
In the Exadata X9M-2 configuration:
High Capacity (HC) Storage Server: Each HC storage server is equipped with 4 x 6.4 TB NVMe flash cards. These flash cards serve as a cache layer to accelerate I/O performance, especially for read-heavy and mixed workload environments. This configuration combines large storage capacity with NVMe flash for optimal data processing.
Extreme Flash (EF) Storage Server: Each EF storage server contains 8 x 6.4 TB NVMe flash cards, which provides extremely high IOPS and low latency. This configuration is designed for applications demanding high-performance flash storage, making it suitable for intensive OLTP and analytical workloads.
Database Server Flash Storage: The Exadata X9M-2 database servers themselves do not include flash storage as part of their default configuration, which aligns with option D. However, since option E is correct, we do not include D as the other correct answer.


NEW QUESTION # 28
......

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