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Oracle Exadata Database Machine X8M Implementation Essentials exam (1Z0-902) is designed for professionals who want to validate their skills in implementing and maintaining Oracle Exadata Database Machine X8M systems. 1z1-902 Exam measures the candidate's knowledge of the Exadata architecture, software, hardware components, and best practices in configuration and administration.

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Oracle 1Z0-902 (Oracle Exadata Database Machine X8M Implementation Essentials) Certification Exam is designed to test the skills and knowledge of professionals who are involved in the implementation and management of Oracle Exadata Database Machine X8M. 1z1-902 Exam is intended for those who have experience in Oracle database administration and are looking to advance their skills in Exadata implementation.

Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q86-Q91):

NEW QUESTION # 86
Which two statements are true about Exadata System Software metrics and alerts on an Exadata Database Machine?

A. Metrics have no thresholds set on them by default.
B. Metric thresholds, if set, will persist across storage and database server reboots.
C. SMTP metric alert notifications must be sent to both ASR manager and Enterprise Manager agents.
D. Metric alert notifications can be sent to only one destination such as Enterprise Manager OR SNMP OR SMTP.
E. Metric alerts are never stateful.

Answer: A,B

Explanation:
Exadata System Software metrics and alerts work as follows:
Persistence of Thresholds: When metric thresholds are configured, they remain active and persist across server reboots. This ensures consistent monitoring behavior even after maintenance or unexpected reboots .
Default Metrics: By default, metrics are collected without predefined thresholds. Administrators must set custom thresholds to enable specific alerting based on their operational requirements.

NEW QUESTION # 87
You are updating your Exadata X9M-2 Elastic Database Machine with 6 database servers and 12 High Capacity Storage Servers. You will be using patchmgr to apply updates across the entire machine while still maintaining database availability.
Assuming you are driving patchmgr from an external server, which statement is true about the execution phase?

A. patchmgr must be invoked with the -rolling argument. Each component type must be upgraded independently of the other.
B. patchmgr cannot apply updates in a rolling manner, you must manually apply patches with the dbnodeudpate and cellupdate tools if high availability is required.
C. patchmgr must be invoked with the -rolling argument with all database and storage servers listed in a single input file.
D. patchmgr will apply patches in component groups consisting of 1 database server and 2 storage servers to minimize disruption.

Answer: D

Explanation:
According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1], patchmgr can be used to apply updates in a rolling manner while still maintaining database availability. It will apply patches in component groups consisting of 1 database server and 2 storage servers to minimize disruption. This is done by invoking patchmgr with the -rolling argument and specifying the component groups in the input file.

NEW QUESTION # 88
You are providing oversight for the delivery of a new Exadata Database Machine.
1. Stabilize the Exadata Rack.
2. Unpack Oracle Exadata Rack.
3. Review the safety guidelines.
4. Let the Exadata acclimatize for 24 hours.
5. Power on Exadata PDU A.
6. Place Exadata in its allocated space.
7. Power on Exadata PDU B.
What is the correct order of these steps?

A. 2,6,1,4,3,7,5
B. 3,2,6,1,4,7,5
C. 4,3,2,6,1,7,5
D. 2,3,4,6,1,7,5
E. 3,2,6,4,1,7,5

Answer: E

Explanation:
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

NEW QUESTION # 89
Which two statements are true about the initial storage configuration after the standard (non-virtualized) deployment of a new Exadata Database Machine with High Capacity storage servers?

A. The DATA_<DBM_Name> and RECO_<DBM_NAME> ASM diskgroups are built on with DATA on the outer-most tracks and RECO on the inner-most tracks of the physical disk.
B. There is free space available on flashdisks inside the Exadata storage servers for possible use for storage indexes.
C. There is free space available on the hard disks inside the database servers for possible extension of the /uoi file system.
D. The sparse_<DBM_NAME> diskgroup is created automatically.
E. There is free space available on flashdisks inside the Exadata storage servers to configure Exadata Smart Flash Logs.

Answer: B,E

Explanation:
According to the Oracle Exadata Database Machine Technical Architecture1, the initial storage configuration after the standard (non-virtualized) deployment of a new Exadata Database Machine with High Capacity storage servers includes two ASM disk groups: DATA_<DBM_Name> and RECO_<DBM_NAME>. These disk groups are built on hard disks and flash disks inside the Exadata Storage Servers1.
The correct statements about this configuration are:
Option D: There is free space available on flashdisks inside the Exadata storage servers for possible use for storage indexes. Storage indexes are a feature of Exadata Storage Software that can improve query performance by avoiding unnecessary I/O operations. Storage indexes use a small amount of flash memory to store metadata about data blocks stored on disk1.
Option E: There is free space available on flashdisks inside the Exadata storage servers to configure Exadata Smart Flash Logs. Exadata Smart Flash Logs are another feature of Exadata Storage Software that can improve database performance by using flash memory as an extension of the database redo log buffer. This can reduce latency and increase throughput for redo log writes1.

NEW QUESTION # 90
Which of the following is NOT a requirement when validating, receiving, unpacking, and planning access route and space requirements for Exadata Database Machine?

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

Answer: E

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 Oracle Exadata Database Machine X9M Implementation Essentials states that Exadata racks are designed to be installed on flat surfaces, not raised floor environments. It is not required to install the rack on raised floor environments. Additionally, the other options listed are all requirements for validating, receiving, unpacking, and planning access route and space requirements for Exadata Database Machine. (Source: Oracle Exadata Database Machine X9M Implementation Essentials, page 41)
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/dbmin/index.html

NEW QUESTION # 91
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