1Z0-902 STUDY MATERIALS & 1Z0-902 TEST QUESTIONS & 1Z0-902 PRACTICE TEST

1Z0-902 Study Materials & 1Z0-902 Test Questions & 1Z0-902 Practice Test

1Z0-902 Study Materials & 1Z0-902 Test Questions & 1Z0-902 Practice Test

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Oracle 1z1-902 certification exam is designed for professionals who want to validate their skills in implementing and managing Oracle Exadata Database Machine X8M systems. 1Z0-902 Exam is intended for individuals who are familiar with Oracle database technologies and have experience in designing, deploying, and administering Exadata Database Machine X8M systems. Oracle Exadata Database Machine X8M Implementation Essentials certification exam tests the candidate's knowledge of Oracle Exadata architecture, performance tuning, backup and recovery, and high availability.

Oracle Exadata Database Machine X8M is a high-performance, scalable, and secure database system that offers a complete solution for running mission-critical workloads. The system is designed to deliver exceptional performance and reliability while reducing the total cost of ownership. The Oracle Exadata Database Machine X8M is an ideal choice for organizations that require high availability, scalability, and security for their critical applications and databases.

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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q71-Q76):

NEW QUESTION # 71
Your customer needs to ensure that their data is available on the Exadata machine during updates. The customer wants to be able to update one server at a time but still be protected against single-node server failure.
What ASM redundancy level should they use?

  • A. External
  • B. Normal
  • C. Sparse
  • D. Extended
  • E. High

Answer: B

Explanation:
Your customer needs to ensure that their data is available on the Exadata machine during updates. The customer wants to be able to update one server at a time but still be protected against single-node server failure. This means that they need a redundancy level that can tolerate at least one disk failure without losing data availability or performance. Therefore, the best option for them is normal redundancy . Normal redundancy provides two-way mirroring by default, which means that each data extent has a primary copy and a mirror copy on different disks in different failure groups1. A failure group is a subset of disks within a disk group that are likely to fail at the same time due to common dependencies2. On Exadata Database Machine , each Storage Server is considered as a failure group by default2. This means that if one Storage Server fails or needs to be updated , the data on its disks can still be accessed from another Storage Server that has the mirror copies of the same data extents2. Therefore, normal redundancy ensures data availability and performance during updates or single-node server failures.
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/sagug/exadata-administering-asm.html


NEW QUESTION # 72
I/O performance of the prod database on your Exadata Database Machine has degraded slightly over the past month. The database has been allocated to the OLTP I/O Resource Management (IORM) category.
Which two monitoring tools might be useful in examining I/O performance for the prod database?

  • A. OS I/O metrics using OS tools such as iostat on the database servers
  • B. I/O-specific dynamic performance views such as v$iostat_fiie, v$iostat_function, and v$iostat_consumer_group from the prod database instances using SQL *p1us
  • C. cellcli (or exacli/exadcli) to examine storage server metrics such as database, category, ceiidisk, and griddisk
  • D. OS I/O metrics using Enterprise Manager host pages for the storage servers
  • E. OS I/O metrics using OS tools such as iostat on the storage servers

Answer: A,C

Explanation:
The two monitoring tools that might be useful in examining I/O performance for the prod database are:
OS I/O metrics using OS tools such as iostat on the database servers.
cellcli (or exacli/exadcli) to examine storage server metrics such as database, category, ceiidisk, and griddisk.
The Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book states that "I/O metrics can be collected from the database server using OS tools such as iostat [1], as well as from the storage servers using cellcli (or exacli/exadcli) to examine storage server metrics such as database, category, ceiidisk, and griddisk". It also suggests using Enterprise Manager host pages for the storage servers to view OS I/O metrics.


NEW QUESTION # 73
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. ASM instances
  • B. Hybrid Columnar Compression (HCC) ratios on Extended (XT) storage servers
  • C. the Power Distribution Units (PDUs)
  • D. the storage server ILOM
  • E. the RDMA over Converged Ethernet (RoCE) switches
  • F. Oracle clusterware on the database server

Answer: A,D,F


NEW QUESTION # 74
You use Enterprise Manager to monitor all the components of your Exadata Database Machine.
Recently, you discovered that certain asmdisks were offline in one of the diskgroups used by the rac database called prod.
In which two sources would you find diagnostic messages related to this problem?

  • A. Enterprise Manager Alerts on the Exadata Storage Server Grid home page
  • B. Enterprise Manager Alerts on the ILOM home page for cell connectivity problems for the prod database instances
  • C. alert logs for Enterprise Manager
  • D. alert logs for the prod database instances
  • E. alert logs for the ASM instances

Answer: D,E

Explanation:
According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and Resources, you can find diagnostic messages related to this problem in the alert logs for the ASM instances and the alert logs for the prod database instances. The alert logs for the ASM instances will provide information related to the offline asm disks, while the alert logs for the prod database instances will provide information related to whether the prod database instances are connected to the ASM instance or not.


NEW QUESTION # 75
Which two activities are supported on the storage servers in an Exadata Database Machine?

  • A. upgrading the Storage Server software package using rpm
  • B. installing an alternative package manager
  • C. changing the root password
  • D. upgrading a device driver for hard disks when inserting a replacement disk after a hard disk failure
  • E. configuring secure shell user equivalency for the cellmonitor user

Answer: A,D

Explanation:
Exadata Database Machine is a preconfigured and optimized for database workloads. The storage servers in an Exadata Database Machine are used to store database data, and support activities such as upgrading a device driver for hard disks when inserting a replacement disk after a hard disk failure and upgrading the Storage Server software package using rpm. These activities are related to maintain the storage servers performance and security. Changing the root password, installing an alternative package manager, and configuring secure shell user equivalency for the cellmonitor user are activities that can be performed on any Linux machine, but they are not specific to Exadata Database Machine.


NEW QUESTION # 76
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