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1Z0-902 Der beste Partner bei Ihrer Vorbereitung der Oracle Exadata Database Machine X8M Implementation Essentials

Die echten und originalen Prüfungsfragen und Antworten zu 1Z0-902 Zertifizierung (Oracle Exadata Database Machine X8M Implementation Essentials) bei Fast2test wurden verfasst von unseren IT-Experten mit den Informationen von 1Z0-902 Prüfungen (Oracle Exadata Database Machine X8M Implementation Essentials) aus dem Testcenter wie PROMETRIC oder VUE.

Die Oracle Exadata Database Machine X8M ist eine leistungsstarke Datenbankmaschine, die extreme Leistung, Skalierbarkeit und Zuverlässigkeit bietet. Es handelt sich um ein konstruiertes System, das Hardware- und Softwarekomponenten kombiniert, um eine komplette Lösung für Datenbank-Workloads bereitzustellen. Die Maschine ist für die Bewältigung anspruchsvollster Workloads konzipiert, wie zum Beispiel Online-Transaktionsverarbeitung (OLTP), Data Warehousing und Big Data Analytics.

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1Z0-902 Prüfungsressourcen: Oracle Exadata Database Machine X8M Implementation Essentials & 1Z0-902 Reale Fragen

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Oracle Exadata Database Machine X8M Implementation Essentials 1Z0-902 Prüfungsfragen mit Lösungen (Q14-Q19):

14. Frage
Which two statements are true about enabling write-back flash cache?

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

Antwort: A,E

15. Frage
You plan to monitor the status of the motherboard, memory, power, fans, and network cards on the database nodes in your Exadata Database Machine using Enterprise Manager.
Where must you set the thresholds for these hardware components and why, to assure that sensor readings, faults, and any related alerts, are visible in Enterprise Manager?

A. No thresholds need to be set because they are preset in the ILOM and these are sufficient for monitoring.
B. Set thresholds in ILOM and in Enterprise Manager because they are not preset anywhere and must be set in both places.
C. No thresholds need to be set because they are preset in the ILOM and in Enterprise Manager
D. Set thresholds only in ILOM because they are not preset anywhere but need to be set only in ILOM.

Antwort: C

Begründung:
For Exadata systems, hardware monitoring for components like the motherboard, memory, power, fans, and network cards on the database nodes is managed through the Integrated Lights Out Manager (ILOM). The ILOM provides built-in thresholds and sensor readings that are automatically recognized by Oracle Enterprise Manager.
These thresholds and alerts are already configured within ILOM for Exadata components, ensuring seamless integration with Enterprise Manager for alerting and monitoring purposes.
Enterprise Manager uses these pre-set ILOM thresholds and does not require additional configuration for monitoring hardware components. Therefore, administrators benefit from preset alerting mechanisms that are sufficient for comprehensive hardware status visibility.

16. Frage
Which two statements are true for the Oracle Exadata Configuration Assistant (OECA)?

A. OECA extends the hardware for the elastic configuration only.
B. OECA allows one XT storage server in the configuration.
C. OECA's "Add Equipment" input option allows allocation of RU slots for customer equipment.
D. OECA reconfigures the size of disk groups and recreates grid disks.
E. OECA facilitates PDU power selection initially and after equipment addition.

Antwort: A,E

Begründung:
B and E are true statements for the Oracle Exadata Configuration Assistant (OECA). OECA facilitates PDU power selection initially and after equipment addition, and it allows for the elastic configuration of the hardware. It does not reconfigure the size of disk groups or recreate grid disks, nor does it allow for a single XT storage server in the configuration. The "Add Equipment" input option does allow for the allocation of RU slots for customer equipment.
References for this information can be found in the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and Resources.
Search results: [1] Oracle Exadata Database Machine X8-2 [1][2]: Configuration Assistant Guide ... The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can ... [2] The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can be used to ... Add Equipment: This input option allows you to allocate RU slots for ... [3] Oracle Exadata Database Machine X7-2 and X7-2L Installation Guide ... The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can ... [4] The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can be used to ... Power Selection [1][2]: This input option allows you to select PDU power initially ... [5] Oracle Exadata Database Machine X7-2 and X7-2L Installation Guide ... The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can ...

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

Antwort: C

Begründung:
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

18. Frage
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 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.
B. You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table.
C. YOU query VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table.
D. You query v$segment_statistics and filter for the Object ID of your table from dba_objects and the the column STATISTIC_NAME='optimized physical reads'.

Antwort: C,D

Begründung:
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).

19. Frage
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