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Oracle Exadata Database Machine X8M is a high-performance, scalable, and secure database system designed for mission-critical workloads. It combines hardware and software components to provide a complete solution for database consolidation, data warehousing, and online transaction processing (OLTP) workloads. The system features advanced technologies such as InfiniBand networking, flash storage, and database offloading to deliver unparalleled performance, availability, and scalability. The Oracle 1z1-902 exam is an essential certification for IT professionals who want to demonstrate their expertise in implementing and managing this powerful database machine.

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Oracle certification exams are known for their rigor and thoroughness. The 1Z0-902 exam is no exception. Candidates should be prepared to demonstrate their knowledge and skills across a wide range of topics related to Exadata Database Machine X8M implementation. 1Z0-902 exam is a multiple-choice test that is administered at Pearson VUE testing centers worldwide.

Oracle 1Z0-902 is a certification exam designed for candidates who want to validate their knowledge and skills in implementing Oracle Exadata Database Machine X8M. Oracle Exadata Database Machine X8M Implementation Essentials certification exam is intended for professionals who work with Oracle Exadata Database Machine X8M and have expertise in developing solutions for database systems. Oracle Exadata Database Machine X8M is a high-performance database machine that provides a unique combination of hardware and software to accelerate database operations.

Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q44-Q49):

NEW QUESTION # 44
Examine these commands:
1. Execute "crscti stop cluster -all" as the grid user from one database server.
2. Execute "crscti stop cluster -all" as root from one database server.
3. Power off all network switches.
4. Execute "crscti stop cluster" as root from one database server.
5. Execute "crscti stop cluster" as the grid user from one database server.
6. Power off the rack using the power switches on the PDUs.
7. Execute "shutdown -h now" on all database servers.
8. Execute "shutdown -h now" on all Exadata storage servers.
Which is the correct order or the required commands to completely power off an Exadata Database Machine in an orderly fashion?

  • A. 5, 8, 7, and 6
  • B. 1, 8, 7, 3 and 6
  • C. 2, 8, 7, 3, and 6
  • D. 4, 7, 8, 3, and 6
  • E. 2, 7, 8, and 6

Answer: B

Explanation:
In order to power off an Exadata Database Machine in an orderly fashion, the commands should be executed in the following order: 1) Execute "crscti stop cluster -all" as the grid user from one database server; 2) Execute "shutdown -h now" on all database servers; 3) Power off all network switches; 4) Execute "shutdown -h now" on all Exadata storage servers; and 5) Power off the rack using the power switches on the PDUs. This sequence of commands ensures that all services running on the Exadata Database Machine are in a clean state before powering off the system. (Source: Oracle Exadata Database Machine X9M Implementation Essentials, page 543)


NEW QUESTION # 45
Which two statements are true for the Oracle Exadata Configuration Assistant (OECA)?

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

Answer: A,B


NEW QUESTION # 46
You have been asked to investigate why an Exadata Database Server stopped communicating on the client network for 10 minutes over the past weekend.
Which command would help investigate this?

  • A. # /opt/oracle.SupportTools/exachk/exachk -from <Fridays_Date>_17:00:00 -to <Sundays_Date>_23:59:00
  • B. # /opt/oracle.SupportTools/ibdiagtools/netcheck/runDiagnostics.pm -from <Fridays_Date>_17:00:00 -to <Sundays_Date>_23:59:00
  • C. # /opt/oracle.ExaWatcher/GetExaWatcherResults.sh -from <Fridays_Date>_17:00:00 -to <Sundays_Date>_23:59:00
  • D. $ ${ORACLE_HOME}/suptools/tfa/release/tfa_home/bin/tfact1 -from <Fridays_Date>_17:00:00 -to <Sundays_Date>_23:59:00

Answer: C

Explanation:
AccordingtoOraclesdocumentationoneoftheutilitiesfordiagnosticsand
Explanation:
repair of Oracle Exadata Storage Server is ExaWatcher, which collects operating system and network metrics on database servers and storage servers. The utility is located in the /opt/oracle.ExaWatcher directory1.
To investigate why an Exadata Database Server stopped communicating on the client network for 10 minutes over the past weekend, you can use the GetExaWatcherResults.sh script to collect and analyze ExaWatcher data for a specified time range1.
Therefore, the command that you should use to investigate this is:
/opt/oracle.ExaWatcher/GetExaWatcherResults.sh -from <Fridays_Date>_17:00:00 -to <Sundays_Date>_23:59:00


NEW QUESTION # 47
How do ASM failure groups provide redundancy?

  • A. They ensure that the ASM Flex instances are enabled on a maximum of two database servers or VMs per cluster.
  • B. Extended Redundancy mirrors data across data centers providing the highest levels of data protection.
  • C. Failure groups are created for each grid disk to ensure mirror copies are written to the same storage server for faster recovery after a physical disk failure.
  • D. Failure groups contain all ASM disks in a single storage server preventing mirror copies being written to the same storage server.

Answer: C

Explanation:
Failure groups provide redundancy in Oracle Exadata Database Machine X9M by ensuring that mirror copies of the data are written to different storage servers [1][2]. This prevents the potential for mirror copies to be written to the same server, which would cause a data loss if that server were to experience a physical disk failure. Furthermore, failure groups help to ensure that the ASM Flex instances are enabled on a maximum of two database servers or VMs per cluster, providing an extra layer of data protection. Additionally, Extended Redundancy mirrors data across data centers, providing the highest levels of data protection. Reference: Oracle Exadata Database Machine X9M Implementation Essentials [1][2], Chapter 5: Configuring Oracle ASM.


NEW QUESTION # 48
Which two activities are supported on the storage servers in an Exadata Database Machine?

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

Answer: A,B


NEW QUESTION # 49
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