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Oracle Exadata Database Machine X8M is a high-performance database appliance designed to deliver extreme performance, scalability, and reliability for mission-critical workloads. It is a complete system that includes hardware, software, and networking components, all optimized to work together seamlessly. The Oracle 1z1-902 exam covers a wide range of topics, including Exadata architecture, networking, software installation and configuration, backup and recovery, and performance tuning. By mastering these topics, you will be able to deploy and manage the Oracle Exadata Database Machine X8M effectively.

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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q24-Q29):

NEW QUESTION # 24
Which two activities are supported on the storage servers in an Exadata Database Machine?

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

Answer: A,E

Explanation:
According to the web search results123, the storage servers in an Exadata Database Machine are mainly used for processing data at the storage level and offloading some SQL operations from the database servers. Therefore, the two activities that are supported on the storage servers are:
A) changing the root password
E) configuring secure shell user equivalency for the cellmonitor user
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/dbmso/exadata-introduction.html

NEW QUESTION # 25
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$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table.
B. You query v$segment_statistics and filter for the Object ID of your table from dba_objects and the the column STATISTIC_NAME='optimized physical reads'.
C. 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.
D. YOU query VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table.

Answer: B,D

Explanation:
The two actions that are not appropriate for monitoring how a large production table is accessed in order to leverage the benefits of the Exadata Platform are A) querying VSSYSTEMEVENTS and filtering for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table; and B) querying v$segmentstatistics and filtering for the Object ID of your table from dbaobjects and the the column STATISTICNAME='optimized physical reads'. Instead, you should query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table (C), or 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 (D). These two methods are outlined in the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (Chapter 8, Monitoring the Exadata Database Machine).

NEW QUESTION # 26
What is the maximum DRAM capacity you can expand an X9M-2 DB Server?

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

Answer: E

Explanation:
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/E80920_01/E80920/html/x9m_hardware_memory.html.

NEW QUESTION # 27
Which four actions should you take before proceeding with applying updates to your Exadata Database Machine?

A. For database servers, perform a server backup using patchmgr -dbnodes db_list_file -backup -rolling.
B. Run patchmgr --all_comp -autofix -autobackup -upgrade -rolling.
C. Run exachk and resolve only WARNINGS that you have not seen before.
D. Check the Exadata Critical Issues My Oracle Support note 1270094.1 for any issues not added to the latest version of exachk.
E. Consult My Oracle Support note 888828.1 to determine the current recommended Exadata software release.
F. Run the appropriate patchmgr preqequisite check step for each component being updated.

Answer: C,D,E,F

Explanation:
According to Oracle.com documents or resources, the four actions that you should take before proceeding with applying updates to your Exadata Database Machine are:
1. Consult My Oracle Support note 888828.1 to determine the current recommended Exadata software release123.
2. Check the Exadata Critical Issues My Oracle Support note 1270094.1 for any issues not added to the latest version of exachk453.
3. Run exachk and resolve only WARNINGS that you have not seen before3.
4. Run the appropriate patchmgr preqequisite check step for each component being updated3.

NEW QUESTION # 28
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. alert logs for the prod database instances
C. alert logs for Enterprise Manager
D. Enterprise Manager Alerts on the ILOM home page for cell connectivity problems for the prod database instances
E. alert logs for the ASM instances

Answer: B,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 # 29
......

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