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Oracle Exadata Database Machine X8M is a high-performance, scalable, and secure database system that offers a complete solution for running mission-critical workloads. The system is designed to deliver exceptional performance and reliability while reducing the total cost of ownership. The Oracle Exadata Database Machine X8M is an ideal choice for organizations that require high availability, scalability, and security for their critical applications and databases.

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Oracle Exadata Database Machine X8M is the latest addition to the Oracle Exadata family of products. It offers several new features and improvements over the previous generations, such as faster CPUs, increased memory, and faster networking. The machine also includes several software enhancements, such as automatic indexing, machine learning, and hybrid columnar compression.

Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q22-Q27):

NEW QUESTION # 22
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?

A. You query v$segment_statistics and filter for the Object ID of your table from dba_objects and the the column STATISTIC_NAME='optimized physical reads'.
B. You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table.
C. YOU query VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table.
D. You run the CellCli-command list activerequest , filtering for the attributes ioReason and objectNumber, that you specify as 'Smart Scan' and the Object ID of your table from DBA_OBJECTS.

Answer: B,C

Explanation:
1. Querying VSSYSTEM_EVENTS for the event 'cell physical IO interconnect bytes returned by smart scan' will not be appropriate for monitoring the access on a particular table. The V$SYSTEM_EVENT view is used to monitor system-wide performance statistics, not specific table access. C. Querying v$SYSTAT for the statistic 'cell smart table scan' will not be appropriate for monitoring the access on a particular table as well. The v$SYSTAT view contains system-wide performance statistics, not specific table access.

NEW QUESTION # 23
Which two statements are false about backup to ZFS Storage Appliance (ZFSSA)?

A. ZFS Snapshots can provide rapid cloning of development and test environment.
B. When backing up multi-rack systems, sharing Exadata X9M switches is recommended.
C. Top of Rack (ToR) switches are managed as part of the hardware stack and software levels are upgraded during the patching process.
D. ZFSSA may connect directly to the Exadata 100Gb RoCE network switches.

Answer: B,D

Explanation:
A . ZFS Storage Appliance (ZFSSA) can't connect directly to the Exadata 100Gb RoCE network switches. ZFSSA uses Fibre Channel protocol to connect to the Exadata storage cells. C. When backing up multi-rack systems, sharing Exadata X9M switches is not recommended. Each rack should have its own switches to minimize the risk of data loss due to switch failure.
Review the safety guidelines.
Unpack Oracle Exadata Rack.
Let the Exadata acclimatize for 24 hours.
Place Exadata in its allocated space.
Stabilize the Exadata Rack.
Power on Exadata PDU A.
Power on Exadata PDU B.
This order ensures that the necessary safety precautions are taken before installing the Exadata Database Machine, and that the machine is allowed to acclimate to its new environment before being powered on.

NEW QUESTION # 24
Which two statements are true about the initial storage configuration after the standard (non-virtualized) deployment of a new Exadata Database Machine with High Capacity storage servers?

A. The DATA_<DBM_Name> and RECO_<DBM_NAME> ASM diskgroups are built on with DATA on the outer-most tracks and RECO on the inner-most tracks of the physical disk.
B. There is free space available on flashdisks inside the Exadata storage servers to configure Exadata Smart Flash Logs.
C. The sparse_<DBM_NAME> diskgroup is created automatically.
D. There is free space available on the hard disks inside the database servers for possible extension of the /uoi file system.
E. There is free space available on flashdisks inside the Exadata storage servers for possible use for storage indexes.

Answer: A,C

Explanation:
This is according to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1]. The other statements are false as there is no free space available on the hard disks inside the database servers for possible extension of the /uoi file system, and there is no free space available on flashdisks inside the Exadata storage servers for possible use for storage indexes or to configure Exadata Smart Flash Logs [2][3].

NEW QUESTION # 25
Which two options can be used to identify a damaged or failing flash card on an X9M-2 Database Machine High Capacity storage server?

A. using the CELLCLI list LUN DETAIL command as the celladmin user
B. using the CELLCLI CALIBRATE command on the storage server after logging in as the root user
C. using the CELLCLI CALIBRATE command on the storage server after logging in as the celladmin user
D. hardware monitoring using the storage server ILOM

Answer: C,D

Explanation:
The CELLCLI CALIBRATE command can be used to check the health of all flash cards in the storage server, and it should be run after logging in as the celladmin user. The hardware monitoring using the storage server ILOM should also be used to check for errors and other potential issues with the flash cards. The CELLCLI list LUN DETAIL command should not be used to identify a damaged or failing flash card, since it will not provide any information about the health of the flash card.
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/dbmmn/index.html

NEW QUESTION # 26
Which are two valid reasons for executing an X9M-2 Exadata storage server rescue procedure?

A. the failure of physical disk 1
B. the failure of physical disk 0 and 11
C. the failure of both physical M.2 disks
D. corruption in a normal or high redundancy ASM diskgroup
E. moving all disks from one cell to another as part of a chassis-level component failure
F. corruption in the / (root) filesystem
G. accidental loss of all data from all griddisks in a storage server

Answer: C,F

Explanation:
The two valid reasons are:
corruption in the / (root) filesystem . According to 1, this is one of the scenarios that requires a storage server rescue procedure , because it prevents the storage server from booting up normally . The rescue procedure will re-image the root filesystem with a fresh copy of the operating system and restore the configuration files from a backup1.
the failure of both physical M.2 disks . According to 2, each Exadata Storage Server X9M-2 has two physical M.2 disks that store the operating system and configuration files for the storage server . If both M.2 disks fail , then the storage server cannot boot up or function properly . The rescue procedure will replace the failed M.2 disks with new ones and re-image them with the operating system and configuration files2.

NEW QUESTION # 27
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