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Our Oracle 1z1-902 practice exam also provides users with a feel for what the real Oracle 1z1-902 exam will be like. Both Oracle Exadata Database Machine X8M Implementation Essentials (1z1-902) practice exams are the same as the Actual 1z1-902 Test and give candidates the experience of taking the real Oracle Exadata Database Machine X8M Implementation Essentials (1z1-902) exam. These 1z1-902 practice tests can be customized according to your needs.

Oracle 1z1-902 exam is a vendor-specific certification that is intended for IT professionals who are responsible for implementing and managing the Oracle Exadata Database Machine X8M. Oracle Exadata Database Machine X8M Implementation Essentials certification is a great way for professionals to demonstrate their expertise in implementing and managing this powerful and efficient database platform. 1z1-902 exam covers a wide range of topics related to the implementation and management of the Exadata Database Machine X8M, and it is designed to test the knowledge and skills of professionals in these areas.

Oracle 1z1-902: Oracle Exadata Database Machine X8M Implementation Essentials is an exam that tests the knowledge and skills of IT professionals in implementing and managing Oracle Exadata Database Machine X8M. 1z1-902 Exam is designed to validate the candidate's ability to install, configure, and optimize the Exadata Database Machine, which is a high-performance database machine that combines hardware and software to deliver unmatched performance, availability, and scalability for mission-critical databases.

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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q20-Q25):

NEW QUESTION # 20
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 Enterprise Manager
C. alert logs for the prod database instances
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: C,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 # 21
You are concerned about the operating temperature of the database servers in your Exadata Full Rack and want to be alerted if the server exceeds 30C.
What command should use use to generate alerts for such an event?

A. dbmcli -e "alert metriccurrent ds_temp where metricValue > 30" on each database server
B. dbmcli -e "create threshold ds_temp comparison='>', critical=30" on each database server
C. dbmcli -e "set threshold ds_temp comparison=' >', critical=30" on each database server
D. dbmcli -e "set alert ds_temp> 30" on each database server

Answer: B

Explanation:
The correct command to generate alerts for an event when the temperature of the database servers in an Exadata Full Rack exceeds 30C is "dbmcli -e "create threshold ds_temp comparison='>', critical=30" on each database server". The dbmcli is the command-line interface for the Oracle Database Management Agent (DMA), which allows you to perform various management tasks on the Exadata servers. This command creates a threshold for the ds_temp metric with a comparison operator of ">" (greater than), and a critical value of 30. The threshold is set on all database servers in the Exadata Full Rack, so when the server temperature exceeds 30C, an alert will be generated.

NEW QUESTION # 22
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. High
B. Normal
C. Extended
D. External
E. Sparse

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 # 23
Which of the following is NOT a requirement when validating, receiving, unpacking, and planning access route and space requirements for Exadata Database Machine?

A. A conditioned space is required to remove the packaging material to reduce particles before entering the data center.
B. Oracle Exadata Rack may only be installed on raised floor environments.
C. The entire access route to the installation site should be free of raised-pattern flooring that can cause vibration.
D. 914mm of space required above the rack height is required for maintenance access.
E. The incline of any access route ramp must be less than or equal to 6 degrees.
F. All four leveling and stabilizing feet should be raised and out of the way prior to moving the rack.

Answer: B

Explanation:
Exadata Database Machine is a pre-configured and pre-tuned hardware and software system designed to run Oracle Database, it can be installed on raised floor environments, but also on concrete or tile floors

NEW QUESTION # 24
Which two statements are true about enabling write-back flash cache?

A. When enabling write-back flash cache in a rolling manner, DBCLI should be used to inactivate the grid disks on all cells first.
B. Before write-back flash cache is enabled, you need to drop the Flash Cache first.
C. Write-back flash cache is on by default for High Capacity Storage Servers in High Redundancy configurations.
D. When enabling write-back flash cache in a non-rolling manner, you need to drop the Persistent Memory Commit Accelerator (PMEMLog) first.
E. Write-back Flash Cache cannot be used on Extreme Flash Storage Servers.

Answer: B,C

Explanation:
According to the Oracle documentation1, two statements that are true about enabling write-back flash cache are:
Write-back flash cache is on by default for High Capacity Storage Servers in High Redundancy configurations (A). This is because write-back flash cache provides better performance and reliability for data file writes than write-through flash cache.
Before write-back flash cache is enabled, you need to drop the Flash Cache first (D). This is because changing the flash cache mode requires recreating the flash cache with a different configuration.

NEW QUESTION # 25
......

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