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Oracle 1z1-902 is a certification exam designed to test the knowledge and skills of IT professionals in implementing and managing the Oracle Exadata Database Machine X8M. Exadata is a powerful platform developed by Oracle that combines hardware and software components to deliver a high-performance database solution. 1Z0-902 Exam is intended for individuals who have experience in implementing Exadata and want to validate their skills.
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Oracle 1Z0-902 Certification Exam is a valuable credential for professionals who want to demonstrate their expertise in implementing and managing the Oracle Exadata Database Machine X8M. Oracle Exadata Database Machine X8M Implementation Essentials certification exam is designed to test the candidate's knowledge and skills in various areas, such as installation and configuration, performance tuning, backup and recovery, and maintenance. Oracle Exadata Database Machine X8M Implementation Essentials certification exam is a rigorous and challenging exam that requires extensive preparation and study.
Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q78-Q83):
NEW QUESTION # 78
You have been asked to design a backup solution for an Exadata X9M-2 Quarter Rack with Extreme Flash Storage Servers connected to a new ZFS Storage Appliance ZS7 with 2 Storage Controllers with 100Gb Ethernet cards and 3 Storage Trays. You are using Oracle Exadata Configuration Assistant to validate the rack layout.
1. Use "Add Equipment" to add the Exadata X9M EF Storage Servers, starting from RU10.
2. Use drop down to add ZFS Storage Appliance Controllers.
3. You cannot add ZFS Storage Appliance to an Exadata Rack.
4. Use "Add Equipment" to add the ZFS Storage Trays, starting from RU1.
5. Use drop down to add ZFS Storage Trays.
6. Use "Add Equipment" to add the Exadata X9M Database Servers, starting from RU16.
7. Use "Add Equipment" to add the Exadata X9M EF Storage Servers, starting from RU1.
8. Use drop down to add Exadata X9M EF Storage Servers.
9. Use "Add Equipment" to add the ZFS Storage Controllers, starting from RU27.
10. Use drop down to add Exadata X9M Database Servers.
11. Use "Add Equipment" to add the ZFS Storage Trays, starting from RU31.
Which of these steps are correct and what is their correct order?
- A. 10, 8, 2, 5
- B. 10, 8, 9, 11
- C. 0
- D. 44, 6, 9
- E. 7,6,9,11
Answer: B
NEW QUESTION # 79
I/O performance of the prod database on your Exadata Database Machine has degraded slightly over the past month. The database has been allocated to the OLTP I/O Resource Management (IORM) category.
Which two monitoring tools might be useful in examining I/O performance for the prod database?
- A. I/O-specific dynamic performance views such as v$iostat_fiie, v$iostat_function, and v$iostat_consumer_group from the prod database instances using SQL *p1us
- B. OS I/O metrics using OS tools such as iostat on the database servers
- C. cellcli (or exacli/exadcli) to examine storage server metrics such as database, category, ceiidisk, and griddisk
- D. OS I/O metrics using OS tools such as iostat on the storage servers
- E. OS I/O metrics using Enterprise Manager host pages for the storage servers
Answer: A,C
Explanation:
According to the Oracle documentation1, two monitoring tools that might be useful in examining I/O performance for the prod database are:
cellcli (or exacli/exadcli) to examine storage server metrics such as database, category, ceiidisk, and griddisk (D). This tool can help you monitor the I/O Resource Management (IORM) metrics and identify any bottlenecks or imbalances in the storage layer.
I/O-specific dynamic performance views such as v$iostat_fiie, v$iostat_function, and v$iostat_consumer_group from the prod database instances using SQL *plus. These views can help you monitor the I/O activity and latency at the file, function, and consumer group level.
NEW QUESTION # 80
How many 128GB Persistent Memory DIMMS are included in Exadata X9M-2 Extended (XT) Storage Servers?
Answer: B
Explanation:
The Exadata X9M-2 Extended (XT) Storage Server does not include any Persistent Memory (PMEM) DIMMs. The XT server configuration primarily serves as a cost-effective archival storage option and lacks the performance features available in the HC (High Capacity) and EF (Extreme Flash) storage servers. This configuration does not include Persistent Memory, which is leveraged in other models for accelerating OLTP workloads and providing extremely low-latency data access.
NEW QUESTION # 81
You have been tasked with replacing a memory module of an Exadata Storage Server and need to power off the affected storage server. Which two commands must you execute to safely power off the storage server in an Exadata X9M Database Machine?
- A. CellCLI LIST GRIDDISK ATTRIBUTES name WHERE asmdeactivationoutcome != 'Yes' on the affected Storage server
- B. 'crsct1 stop cluster -all' on one of the database servers
- C. shutdown -h now' on the affected storage server
- D. CeLLCLI> alter cell shutdown SERVICES all on the affected storage server
- E. CeLLCLI> list GRIDDISK where status != 'inactive' on the affected storage server
- F. CellCLI alter GRIDDISK all inactive on the affected storage server
Answer: C,F
Explanation:
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
NEW QUESTION # 82
Which two activities are supported on the storage servers in an Exadata Database Machine?
- A. upgrading the Storage Server software package using rpm
- B. configuring secure shell user equivalency for the cellmonitor user
- C. changing the root password
- D. installing an alternative package manager
- E. upgrading a device driver for hard disks when inserting a replacement disk after a hard disk failure
Answer: B,C
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:
1. changing the root password
2. 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 # 83
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