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Study Tips For Completing The Oracle Exadata Database Machine X9M Implementation Essentials

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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q39-Q44):

NEW QUESTION # 39
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?

A. Check the database to see if any rebalance operations are active.
B. Ask the system administrator to replace the broken disk with a spare.
C. Download and run the latest exadiag tool.
D. Call Oracle Support and make an appointment so that the drive can be replaced.
E. Wait for the email of the failure that Exadata or Enterprise Manager will send.
F. Wait for a blue light to appear on the disk if the rebalance operation is running.

Answer: F

Explanation:
According to Oracle documentation1, Exadata Storage software has a complete set of automated operations for hard disk maintenance, when a hard disk has failed or has been flagged as a problematic disk. It will initiate a rebalance operation to redistribute data across other disks and mark the failed disk with an amber light.

NEW QUESTION # 40
You are working on a remote Exadata Database Machine with current software and firmware. You now need to start a storage server after hardware maintenance.
Which ILOM command starts the storage server?

A. -> set /SYS power_state=ON
B. -> start /System
C. -> start /SP/console
D. -> start /SYS/power
E. You must be physically present in the data center to start an Exadata Storage Server.
F. -> start /SYSTEM/power

Answer: A

Explanation:
This command is based on the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and other resources. This command sets the power state of the system to ON and starts the storage server. It is the only command that is able to start the storage server remotely. All the other commands are incorrect or require the user to be physically present in the data center.

NEW QUESTION # 41
Which statement is true about the Persistent Memory Commit Accelerator?

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

Answer: A

NEW QUESTION # 42
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. OS I/O metrics using OS tools such as iostat on the storage servers
B. OS I/O metrics using OS tools such as iostat on the database servers
C. 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
D. OS I/O metrics using Enterprise Manager host pages for the storage servers
E. cellcli (or exacli/exadcli) to examine storage server metrics such as database, category, ceiidisk, and griddisk

Answer: C,E

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 *p1us . These views can help you monitor the I/O activity and latency at the file, function, and consumer group level.

NEW QUESTION # 43
You are planning the monitoring configuration for your Exadata X9M Database Machine.
Which three components are monitored directly through the use of Exadata-specific Enterprise Manager Plug-Ins?

A. Oracle clusterware on the database server
B. the Power Distribution Units (PDUs)
C. the storage server ILOM
D. the RDMA over Converged Ethernet (RoCE) switches
E. ASM instances
F. Hybrid Columnar Compression (HCC) ratios on Extended (XT) storage servers

Answer: B,C,D

Explanation:
According to Oracle's documentation12, the components that are monitored directly through the use of Exadata-specific Enterprise Manager Plug-Ins are:
The storage server ILOM2
The Power Distribution Units (PDUs)2
The RDMA over Converged Ethernet (RoCE) switches3

NEW QUESTION # 44
......

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