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The Oracle Exadata Database Machine X8M is a powerful database appliance that is designed to provide high performance, scalability, and availability for mission-critical databases. The machine is built on top of Oracle Database technology and includes advanced hardware components such as InfiniBand networking, flash storage, and high-speed processors. The Oracle 1z1-902 Exam covers all the key concepts and technologies that are necessary to effectively implement the Exadata Database Machine X8M. Passing this exam demonstrates an individual's proficiency in implementing and managing this powerful database machine.

Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q53-Q58):

NEW QUESTION # 53
Which four actions should you take before proceeding with applying updates to your Exadata Database Machine?

A. Run patchmgr --all_comp -autofix -autobackup -upgrade -rolling.
B. For database servers, perform a server backup using patchmgr -dbnodes db_list_file -backup -rolling.
C. Run exachk and resolve only WARNINGS that you have not seen before.
D. Consult My Oracle Support note 888828.1 to determine the current recommended Exadata software release.
E. Check the Exadata Critical Issues My Oracle Support note 1270094.1 for any issues not added to the latest version of exachk.
F. Run the appropriate patchmgr preqequisite check step for each component being updated.

Answer: C,D,E,F

Explanation:
According to Oracle.com documents or resources, the four actions that you should take before proceeding with applying updates to your Exadata Database Machine are:
1. Consult My Oracle Support note 888828.1 to determine the current recommended Exadata software release123.
2. Check the Exadata Critical Issues My Oracle Support note 1270094.1 for any issues not added to the latest version of exachk453.
3. Run exachk and resolve only WARNINGS that you have not seen before3.
4. Run the appropriate patchmgr preqequisite check step for each component being updated3.

NEW QUESTION # 54
How do ASM failure groups provide redundancy?

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

Answer: D

Explanation:
According to Oracle's documentation12, ASM failure groups provide redundancy by storing mirror copies of data on different disks or storage servers. When ASM allocates an extent for a normal redundancy file, ASM allocates a primary copy and a secondary copy. ASM chooses the disk on which to store the secondary copy so that it is in a different failure group than the primary copy1. This way, if one disk or storage server fails, ASM can still access the data from another failure group2.
Therefore, the statement that is true about how ASM failure groups provide redundancy is:
Failure groups contain all ASM disks in a single storage server preventing mirror copies being written to the same storage server.

NEW QUESTION # 55
How is Exadata Secure RDMA Fabric isolation used in X9M-2 with virtualization enabled?

A. With Secure Fabric isolation, each Database VM Guest uses a dedicated network partition and VLAN ID for client networking between application servers. This improves security by preventing man in the middle attacks.
B. With Secure Fabric isolation, each Database VM Cluster uses a dedicated network partition and VLAN ID for Data Guard networking between the primary and disaster recovery Exadata racks. This improves security by isolating data guard traffic onto an encrypted network between data centers.
C. With Secure Fabric isolation, each Storage Server runs multiple KVM guests each dedicated to a Database VM cluster using a dedicated network partition and VLAN ID. This provides security and isolation between multiple tenants or VM clusters.
D. With Secure Fabric isolation, each Database VM cluster uses a dedicated network partition and VLAN ID for cluster networking between the database servers in the VM Cluster. This provides security and isolation between multiple tenants or VM clusters.

Answer: D

Explanation:
Exadata Secure RDMA Fabric isolation is a feature that allows you to use virtualization on the X9M-2 platform while maintaining security and isolation between multiple tenants or VM clusters. Secure Fabric isolation works by creating a dedicated network partition and VLAN ID for each Database VM cluster, which is used for cluster networking between the database servers in the VM Cluster. This ensures that the network traffic of each VM cluster is isolated from the others, and it prevents unauthorized access to the data or resources of other VM clusters. Secure Fabric isolation can also be used for other purposes such as client networking, Data Guard traffic, but it's mainly used to provide security and isolation between multiple tenants or VM clusters.

NEW QUESTION # 56
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. Do not proceed if the OEDA Validate Configuration File step displays an error message about missing files p6880880.zip.
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. Executing /opt/oracle.supportTools/reclaimdisks.sh -free -reclaim on each Exadata X9M Database server is required to reclaim disk space and perform partition reconfiguration.
D. It is required to install OEDA on the first new database server.
E. The applyElasticConfig.sh script performs network configuration for the new servers. The new servers are restarted at the end of the process.

Answer: A,E

Explanation:
It is not necessary to execute /opt/oracle.supportTools/reclaimdisks.sh -free -reclaim on each Exadata X9M Database server, nor is it required to install OEDA on the first new database server. 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.
Search results: [1] Refer to the Oracle Exadata Database Machine X9M Implementation Essentials documentation for more information on adding an additional database server to a physical Exadata X9M Database Machine using Oracle Exadata Deployment Assistant (OEDA). [2] Oracle Exadata Deployment Assistant (OEDA) is a graphical user interface (GUI) tool used to configure the Oracle Exadata Database Machine X9M. [3] This article provides the step-by-step instructions to add an additional database server to a physical Exadata X9M Database Machine using Oracle Exadata Deployment Assistant (OEDA). [4] It is important to run the OEDA Validate Configuration File step prior to adding the new server to ensure the configuration file is valid and that all required files exist. [5] When adding a new database server with OEDA [1], the configuration file must contain the existing nodes and the new server information must be entered in OEDA. [6] The applyElasticConfig.sh script must be executed to configure the new servers, after which the new servers will be restarted.

NEW QUESTION # 57
You are going to create an ACFS Filesystem for use as a staging area for data loads. Examine the following commands:

What steps and in which order should they be executed?

A. 6, 2, 1, 8, 4, 5
B. 6, 3, 1, 9, 7, 8
C. 6, 1, 2, 7, 5, 8
D. 6, 8, 3, 4, 2, 1

Answer: B

NEW QUESTION # 58
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