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Free Sample 1Z0-902 Questions | Exam 1Z0-902 Vce

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Oracle 1Z0-902 certification exam is a valuable credential for individuals who work with the Oracle Exadata Database Machine X8M. It demonstrates that they have the skills and knowledge necessary to implement and manage this powerful database machine, and can be a valuable asset for organizations that rely on the Oracle Exadata Database Machine X8M for their mission-critical applications.

Oracle 1z1-902 (Oracle Exadata Database Machine X8M Implementation Essentials) Certification Exam is designed to validate the skills and knowledge of IT professionals who are responsible for implementing and managing Oracle Exadata Database Machine X8M. 1Z0-902 Exam covers a range of topics related to Exadata implementation and management, and candidates should have a strong understanding of Oracle database technology and experience with Oracle database administration and performance tuning to succeed on the exam.

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

NEW QUESTION # 20
Which two activities are supported on the storage servers in an Exadata Database Machine?

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

Answer: D,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 # 21
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 VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table.
B. You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table.
C. You run the CellCli-command list activerequest , filtering for the attributes ioReason and objectNumber, that you specify as 'Smart Scan' and the Object ID of your table from DBA_OBJECTS.
D. You query v$segment_statistics and filter for the Object ID of your table from dba_objects and the the column STATISTIC_NAME='optimized physical reads'.

Answer: A,B

Explanation:
A) YOU query VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table. This does not show how much data was filtered by Smart Scan, but only how much data was returned after Smart Scan12.
C) You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table. This does not show how much data was filtered by Smart Scan for a specific table, but only for all tables in a session12.
https://www.databasejournal.com/oracle/monitoring-smart-scans-in-oracle-exadata/

NEW QUESTION # 22
Which four actions should you take before proceeding with applying updates to your Exadata Database Machine?

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

Answer: A,B,C,D

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:
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.

NEW QUESTION # 23
Which are two correct statements for managing virtual deployment using Oracle Exadata Deployment Assistant (OEDA)?

A. OEDA deployment steps include calibrate cells, create cell disks, and resecure machine.
B. OEDA sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA.
C. There is no limit on the number of VMs in an Exadata rack as long as the Exadata rack has adequate resources.
D. OEDA allows customers to have both bare metal (BM) and virtual machine (VM) in an Exadata X9M Quarter Rack.

Answer: A,D

NEW QUESTION # 24
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 VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table.
B. You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table.
C. You run the CellCli-command list activerequest , filtering for the attributes ioReason and objectNumber, that you specify as 'Smart Scan' and the Object ID of your table from DBA_OBJECTS.
D. You query v$segment_statistics and filter for the Object ID of your table from dba_objects and the the column STATISTIC_NAME='optimized physical reads'.

Answer: A,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 # 25
......

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