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Oracle 1z1-902 (Oracle Exadata Database Machine X8M Implementation Essentials) Certification Exam is a specialized test designed for database administrators who wish to demonstrate their expertise in implementing and maintaining Oracle Exadata Database Machines. 1Z0-902 Exam is designed for professionals who have a strong knowledge of Oracle database architecture and who are familiar with the best practices for deploying and managing Oracle Exadata Database Machines. Successful completion of 1Z0-902 exam is a valuable credential for database administrators seeking to advance their careers and demonstrate their expertise in this specialized field.
Oracle Exadata Database Machine is a pre-configured, pre-tuned and pre-tested data center appliance that is optimized for database workloads. It offers high-performance, scalability, and reliability for both OLTP and data warehousing workloads. Oracle Exadata X8M is the latest version of the Oracle Exadata Database Machine, which includes enhanced hardware and software features to further improve performance and availability.
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NEW QUESTION # 67
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?
Answer: E
Explanation:
In order to completely power off an Exadata Database Machine in an orderly fashion, it's important to properly shut down the cluster first. The command "crscti stop cluster" as root should be executed from one of the database servers.
Once the cluster has been stopped, the next step is to shut down the database servers by executing the command "shutdown -h now" on all database servers.
Next, shut down the Exadata storage servers by executing the command "shutdown -h now" on all Exadata storage servers.
Finally, power off the rack using the power switches on the PDUs.
NEW QUESTION # 68
Your system administrator reports an amber, non-blinking light on one of your Exadata storage disks. You immediately execute the 'list physicaldisk where diskType=HardDisk and status=failed DETAIL' command on the Exadata storage system and the specified disk is indeed reported as failed. Platinum Support has not been enabled for this system. Enterprise Manager Cloud Control is monitoring the system.
What is the next step that you should perform before you do anything else?
Answer: D
Explanation:
According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1], before doing anything else you should call Oracle Support and make an appointment so that the drive can be replaced. If Platinum Support is enabled, then you can call Oracle Support and they will arrange for the disk to be replaced. If Platinum Support is not enabled, then you can arrange for the disk to be replaced through Enterprise Manager Cloud Control.
NEW QUESTION # 69
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?
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 # 70
Which four actions should you take before proceeding with applying updates to your Exadata Database Machine?
Answer: B,D,E,F
NEW QUESTION # 71
You are adding a disk expansion kit to a running Exadata X8M Database Machine's Database Servers, and have a filesystem layout that includes:
After running the following commands, which command needs to be run to add 20G of space to the filesystem mounted on /u01?
Answer: B
Explanation:
After running the commands above, the filesystem mounted on /u01 is on the logical volume /dev/mapper/VGExaDb-LVDbOral. So, to add 20G of space to the filesystem mounted on /u01, the command that needs to be run is:
lvextend -L +20G --verbose /dev/mapper/VGExaDb-LVDbOral
This command will extend the logical volume /dev/mapper/VGExaDb-LVDbOral by 20 GB of space. It is important to note that the option --verbose is used to display the progress of the operation.
NEW QUESTION # 72
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