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Oracle 1Z0-902 certification exam covers a wide range of topics related to the implementation and management of the Oracle Exadata Database Machine X8M. These topics include database administration, system administration, storage management, network configuration, and security. 1z1-902 Exam also includes hands-on tasks that require candidates to demonstrate their ability to configure and manage the Oracle Exadata Database Machine X8M.

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Oracle Exadata Database Machine X8M is a powerful, high-performance solution that helps organizations manage complex data environments. Professionals who have expertise in implementing and managing this technology are highly sought after in today's job market. By passing the Oracle 1Z0-902 exam, candidates demonstrate their ability to design, install, configure, and manage the Oracle Exadata Database Machine X8M.

Oracle Exadata Database Machine X8M is a powerful database appliance that is designed to provide high performance, scalability, and availability for mission-critical databases. The machine is built on top of Oracle Database technology and includes advanced hardware components such as InfiniBand networking, flash storage, and high-speed processors. The Oracle 1z1-902 Exam covers all the key concepts and technologies that are necessary to effectively implement the Exadata Database Machine X8M. Passing 1z1-902 exam demonstrates an individual's proficiency in implementing and managing this powerful database machine.

Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q18-Q23):

NEW QUESTION # 18
Which four actions should you take before proceeding with applying updates to your Exadata Database Machine?

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

Answer: A,B,C,E

NEW QUESTION # 19
You want to examine how much Smart Scan activity is occurring.
Which two would provide the information you require?

A. the number of Smart Scans performed for the table on all the storage servers, as shown when performing a list ACTIVEREQUEST command using EXACLI on all the cells
B. the number of serial queries that accessed the table
C. the number of parallel queries that accessed the table
D. the number of full table scans that accessed the table
E. the number of Smart Scans performed for the table on all the storage servers, as shown when performing a list activerequest command using CELLCLI on all the cells

Answer: A,E

Explanation:
To determine the amount of Smart Scan activity on an Exadata Database Machine, you can access two specific commands:
CELLCLI Command: Using the list activerequest command within CELLCLI on all storage cells will show the number of Smart Scans being processed. CELLCLI is an interface specific to Exadata Storage Servers for management and monitoring, and it provides real-time visibility into ongoing Smart Scan operations .
EXACLI Command: Similarly, the list ACTIVEREQUEST command using EXACLI on all storage cells also lists the Smart Scans executed across the storage servers. EXACLI is a remote command-line utility that can be run from a database server to manage storage cells, offering convenient access to similar Smart Scan information .

NEW QUESTION # 20
Which statement is true about the Persistent Memory Commit Accelerator?

A. Persistent Memory Commit Accelerator copies redo log data from disk for faster redo apply on Data Guard Standby Databases.
B. Persistent Memory Commit Accelerator contains logging information from all tiers of the software stack for rapid triage and diagnostics.
C. Persistent Memory Commit Accelerator helps to further reduce redo log write latency by using Persistent Memory and Remote Direct Memory Access (RDMA).
D. Persistent Memory Commit Accelerator tracks changes to Persistent Memory Data Accelerator to ensure duplicate blocks are not written to Flash.
E. Persistent Memory Commit Accelerator reduces redo log write latency by using Persistent Memory and RDMA before flushing to Flash then disk.

Answer: C

Explanation:
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/dbmso/new-features-exadata-system-software-release-23.html

NEW QUESTION # 21
Your system administrator reports an amber, non-blinking light on one of your Exadata storage disks. You immediately execute the 'list physicaldisk where diskType=HardDisk and status=failed DETAIL' command on the Exadata storage system and the specified disk is indeed reported as failed. Platinum Support has not been enabled for this system. Enterprise Manager Cloud Control is monitoring the system.
What is the next step that you should perform before you do anything else?

A. Wait for a blue light to appear on the disk if the rebalance operation is running.
B. Ask the system administrator to replace the broken disk with a spare.
C. Wait for the email of the failure that Exadata or Enterprise Manager will send.
D. Download and run the latest exadiag tool.
E. Call Oracle Support and make an appointment so that the drive can be replaced.
F. Check the database to see if any rebalance operations are active.

Answer: E

Explanation:
According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1], before doing anything else you should call Oracle Support and make an appointment so that the drive can be replaced. If Platinum Support is enabled, then you can call Oracle Support and they will arrange for the disk to be replaced. If Platinum Support is not enabled, then you can arrange for the disk to be replaced through Enterprise Manager Cloud Control.

NEW QUESTION # 22
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. changing the root password
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. upgrading the Storage Server software package using rpm

Answer: C,E

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 # 23
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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q18-Q23):

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