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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q58-Q63):

NEW QUESTION # 58
Which two statements are true for the Oracle Exadata Configuration Assistant (OECA)?

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

Answer: B,E Explanation:
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 ...
NEW QUESTION # 59
How do ASM failure groups provide redundancy?

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

Answer: A 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 # 60
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?

• A. # lvextend -L +20G -verbose /dev/mapper/VGExaDb-LVDbOral
• B. # lvextend -L +20G -verbose /dev/VGExaDb/LVDbOral
• C. # resize2fs +20G /dev/VGExaDb/LVDbOral
• D. # xfs_growfs /uOl +20G

Answer: A 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 # 61
Which two statements are true about Auto Service Request (ASR) with an Exadata Database Machine?

• A. ASR Manager must be installed and configured on a dedicated server external to the Database Machine.
• B. ASR communicates with Oracle support services using HTTPS.
• C. ASR Manager must be installed and configured on one of the database servers.
• D. ASR can upload configuration metadata to support problem resolution.
• E. ASR Manager opens a service request (SR) automatically after sensors detect hardware faults.
• F. Configuring ASR is mandatory for all Database Machine assets.

Answer: A,E
NEW QUESTION # 62
Which two statements are true about enabling write-back flash cache?

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

Answer: B,E
NEW QUESTION # 63
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