Pass the Oracle Oracle Exadata 1z0-902 Questions and answers with CertsForce

The correct sequence is:

Review the safety guidelines. This is important to ensure a safe and successful installation1.

Unpack Oracle Exadata Rack. This involves removing the packaging materials and inspecting the rack for damage or missing components1.

Place Exadata in its allocated space. This involves moving the rack to its final location and securing it with bolts and brackets1.

Let the Exadata acclimatize for 24 hours. This is recommended to allow the rack components to adjust to the ambient temperature and humidity before powering on1.

Stabilize the Exadata Rack. This involves leveling the rack and adjusting its height if needed1.

Power on Exadata PDU B. This involves connecting PDU B to a power source and turning it on1.

Power on Exadata PDU A. This involves connecting PDU A to a power source and turning it on1

Oracle Exadata Deployment Assistant (OEDA) offers multiple benefits for configuring and deploying Exadata systems:

Configuration Gathering and Rack File Creation: OEDA simplifies the setup of Exadata environments by collecting system-specific configuration details. It uses this information to generate the Exadata Rack configuration file, which outlines the optimal setup for the particular environment, streamlining the deployment process and ensuring compatibility with Oracle best practices​ .

Lifecycle Management CLI for Exadata Systems: OEDA includes a command-line interface (CLI) that facilitates various lifecycle management tasks, specifically designed for Exadata systems. This CLI helps in automating deployment steps, adjusting configurations, and updating system parameters, tailored specifically for Exadata’s hardware and software environment .

The statements that are true about the CellCLI command are:

It has command-line history . According to 1, you can use the up and down arrow keys to scroll through previous commands that you entered in CellCLI . You can also use Ctrl+R to search for a previous command by entering part of it .

It can be executed on storage servers . According to 1, you can invoke CellCLI by logging in to the Exadata cell as cellmonitor , celladmin , or root user and typing “cellcli” . Within CellCLI , you can perform various management and monitoring tasks for the cell134.

It can be executed using the DCLI utility . According to 5, DCLI (distributed CLI) is another utility that can be used to execute scripts and commands across multiple storage cells from a single interface. You can use DCLI to run CellCLI commands on multiple cells at once54.

The two valid reasons are:

corruption in the / (root) filesystem . According to 1, this is one of the scenarios that requires a storage server rescue procedure , because it prevents the storage server from booting up normally . The rescue procedure will re-image the root filesystem with a fresh copy of the operating system and restore the configuration files from a backup1.

the failure of both physical M.2 disks . According to 2, each Exadata Storage Server X9M-2 has two physical M.2 disks that store the operating system and configuration files for the storage server . If both M.2 disks fail , then the storage server cannot boot up or function properly . The rescue procedure will replace the failed M.2 disks with new ones and re-image them with the operating system and configuration files2.

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:

A. Consult My Oracle Support note 888828.1 to determine the current recommended Exadata software release123.

B. Check the Exadata Critical Issues My Oracle Support note 1270094.1 for any issues not added to the latest version of exachk453.

C. Run exachk and resolve only WARNINGS that you have not seen before3.

D. Run the appropriate patchmgr preqequisite check step for each component being updated3.

Oracle Linux 7.9 is the minimum version required to support RoCE and Persistent Memory. This is because Oracle Linux 7.9 includes kernel enhancements that enable RDMA over Converged Ethernet (RoCE) networking and Intel Optane DC Persistent Memory Modules (DCPMM) for Exadata X8M systems3. These features allow faster access latency and higher throughput for database workloads2.

According to Oracle’s documentation1, to set a threshold for a metric on a database server, you need to use the create threshold command with the appropriate parameters. The set threshold command is used to modify an existing threshold2.

Therefore, the command that you should use to generate alerts for such an event is:

dbmcli -e “create threshold ds_temp comparison=‘>’, critical=30” on each database server1

https://www.oracle.com/a/ocom/docs/engineered-systems/exadata/exadata-x9m-2-ds.pdf

The handling and installation of an Exadata Database Machine rack require caution and adherence to recommended guidelines:

Shipping Brackets: Shipping brackets are specifically designed for transportation purposes and should not be reused for permanent installation. Permanent floor mounting should use approved rack-mounting equipment to ensure stability and safety​ .

Steering and Pushing the Rack: Exadata racks should be steered from the rear due to fixed front casters. It is critical to avoid pushing the rack from the side panels, which could cause it to tip over, presenting a serious safety risk. This careful movement ensures safe positioning and prevents damage to the equipment during installation.

https://docs.oracle.com/en/engineered-systems/exadata-database-machine/dbmmn/maintaining-exadata-storage-servers.html#GUID-AE16A1DA-53C6-4E80-94E5-963AA65373AB

The two commands that must be executed to safely power off the storage server in an Exadata X9M Database Machine are E and F.

Command E, CellCLI alter GRIDDISK all inactive, will deactivate all of the GRIDDISKS on the affected storage server. This will ensure that no data is lost during the power-off process.

Command F, shutdown -h now, will shut down the storage server. This will ensure that the storage server is completely powered off and no data is lost.

For more information on how to properly power off an Exadata Storage Server, refer to the Oracle Exadata Database Machine X9M Implementation Essentials official text book and resources [1][2].

https://support.oracle.com/knowledge/Oracle%20Database%20Products/1188080_1.html