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What are the Key Features of the Oracle Exadata Database Machine X9M Implementation Essentials

The Oracle Exadata Database Machine X9M Implementation Essentials is a powerful database machine, which provides users with fast data retrieval. With it, users can analyze large amounts of data quickly, and store more information in less space.

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The machine's performance is greatly improved by the use of a 64-bit architecture. It provides a lot of advantages, such as faster data retrieval and storage, and more RAM.

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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q14-Q19):

NEW QUESTION # 14
Which two statements are true in regards to starting the Exadata Virtual Machine?

• A. To see Oracle Linux boot messages during guest startup, use -console option with the vm_maker -start-domain command.
• B. Use vm_maker -auto-start command to configure a virtual machine to start automatically when the KVM host is started.
• C. To streamline the diagnosis of virtual machines, one ISO file is used for multiple Oracle Exadata System Software releases.
• D. Use vm_maker boot-from-iso command to boot a virtual machine.
• E. Use vm_maker -start-domain to start a virtual machine manually.

Answer: B,E

NEW QUESTION # 15
Which statement is true about the Persistent Memory Commit Accelerator?

• A. Persistent Memory Commit Accelerator contains logging information from all tiers of the software stack for rapid triage and diagnostics.
• B. Persistent Memory Commit Accelerator helps to further reduce redo log write latency by using Persistent Memory and Remote Direct Memory Access (RDMA).
• C. Persistent Memory Commit Accelerator copies redo log data from disk for faster redo apply on Data Guard Standby Databases.
• D. Persistent Memory Commit Accelerator tracks changes to Persistent Memory Data Accelerator to ensure duplicate blocks are not written to Flash.
• E. Persistent Memory Commit Accelerator reduces redo log write latency by using Persistent Memory and RDMA before flushing to Flash then disk.

Answer: E

Explanation:
Persistent Memory Commit Accelerator reduces redo log write latency by using Persistent Memory and RDMA before flushing to Flash then disk. This helps to further reduce redo log write latency by utilizing the speed and low latency of Persistent Memory, along with the Remote Direct Memory Access (RDMA) protocol, to commit changes to disk faster. This allows the system to quickly commit changes to disk, resulting in improved performance and reduced latency.

NEW QUESTION # 16
Which two statements are correct about adding an additional database server to a physical Exadata X9M Database Machine using Oracle Exadata Deployment Assistant (OEDA)?

• A. Executing /opt/oracle.supportTools/reclaimdisks.sh -free -reclaim on each Exadata X9M Database server is required to reclaim disk space and perform partition reconfiguration.
• B. In order to configure the servers with Oracle Exadata Deployment Assistant (OEDA), the new server information must be entered in OEDA, and the configuration file must contain existing nodes.
• C. Do not proceed if the OEDA Validate Configuration File step displays an error message about missing files p6880880.zip.
• D. The applyElasticConfig.sh script performs network configuration for the new servers. The new servers are restarted at the end of the process.
• E. It is required to install OEDA on the first new database server.

Answer: B,D

Explanation:
https://docs.oracle.com/en/database/oracle/oracle-database/21/ladbi/db-on-exadata.html

NEW QUESTION # 17
What is the minimum Oracle Linux version required to support RoCE and Persistent Memory?

• A. Oracle Linux 7.7
• B. Oracle Linux 7.9
• C. Oracle Linux 7.5
• D. Oracle Linux 8.0

Answer: D

Explanation:
RoCE, or Remote Direct Memory Access over Converged Ethernet, is a high-speed networking technology that allows data to be transferred between servers, storage, and other devices over Ethernet. Persistent Memory is a form of non-volatile memory that can be used to store data without losing it when power is lost.
Oracle Linux 8.0 supports both RoCE and Persistent Memory, allowing Exadata systems to leverage the benefits of both technologies. For more information on Oracle Linux 8.0 and its features, refer to the Oracle Exadata Database Machine X9M Implementation Essentials official text book and resources.

NEW QUESTION # 18
An Exadata storage server physical disk on an X9M-2 high-capacity full rack entered the predictive failure state. Which two steps must you perform to replace this failed physical disk?

• A. Create a new celldisk and new griddisks on the replaced physical disk.
• B. Add the griddisks back into the ASM diskgroup they used to be a member of.
• C. Replace the failed physical disk.
• D. Verify that the griddisks located on the physical disk have been successfully dropped from the associated ASM diskgroups.
• E. Rebalance the data on the effected griddisks before performing a manual drop command.
• F. Identify the griddisks located on the failed physical disk and drop them from the associated ASM diskgroups.

Answer: C,F

Explanation:
Once the physical disk has been replaced, you will need to create a new celldisk and griddisks on the replaced physical disk. After the griddisks have been dropped from the associated ASM diskgroups, you can then add the griddisks back into the ASM diskgroup they used to be a member of and rebalance the data on the effected griddisks. Finally, you should verify that the griddisks located on the physical disk have been successfully dropped from the associated ASM diskgroups.

NEW QUESTION # 19
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