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Oracle Exadata is a high-performance engineered system that is designed for running the Oracle Database. It provides a unique combination of hardware and software, which is optimized for Oracle Database workloads. Oracle Exadata Database Machine X8M is the latest version of this engineered system, which offers enhanced performance, scalability, and reliability. To implement Exadata X8M, Oracle offers the 1Z0-902 exam, which validates the candidate's knowledge and skills in Exadata X8M implementation.

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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q33-Q38):

NEW QUESTION # 33
You have a script with several CELLCLI commands that must be executed on each cell in your Exadata full rack. The script must run on each cell simultaneously. How must you achieve this?

A. Copy and execute the script on all storage servers using the EXACLI command.
B. Copy the script to all storage servers using the dcli command and manually execute it on each storage server using the DCLI command.
C. Copy the script to all storage servers using the dcli command and manually execute it on all storage servers using the EXACLI command.
D. Copy and execute the script on all storage servers using the dcli command.
E. Copy the script to all storage servers using the CELLCLI command and execute it on all storage servers in parallel using the CELLCLI command.

Answer: E

Explanation:
This can be done by using the 'cellcli -e' command, which allows you to execute commands in parallel on all storage servers. For more information about executing CELLCLI commands in parallel, please refer to the Oracle Exadata Database Machine X9M Implementation Essentials official text book and resources [1][2].

NEW QUESTION # 34
You use Enterprise Manager to monitor all the components of your Exadata Database Machine.
Recently, you discovered that certain asmdisks were offline in one of the diskgroups used by the rac database called prod.
In which two sources would you find diagnostic messages related to this problem?

A. alert logs for Enterprise Manager
B. alert logs for the prod database instances
C. Enterprise Manager Alerts on the Exadata Storage Server Grid home page
D. alert logs for the ASM instances
E. Enterprise Manager Alerts on the ILOM home page for cell connectivity problems for the prod database instances

Answer: C,E

NEW QUESTION # 35
You are updating your Exadata X9M-2 Elastic Database Machine with 6 database servers and 12 High Capacity Storage Servers. You will be using patchmgr to apply updates across the entire machine while still maintaining database availability.
Assuming you are driving patchmgr from an external server, which statement is true about the execution phase?

A. patchmgr will apply patches in component groups consisting of 1 database server and 2 storage servers to minimize disruption.
B. patchmgr must be invoked with the -rolling argument. Each component type must be upgraded independently of the other.
C. patchmgr must be invoked with the -rolling argument with all database and storage servers listed in a single input file.
D. patchmgr cannot apply updates in a rolling manner, you must manually apply patches with the dbnodeudpate and cellupdate tools if high availability is required.

Answer: C

Explanation:
According to Oracle documentation12, patchmgr is the utility used to update software for Exadata infrastructure components. It can apply patches in a rolling or non-rolling manner depending on the argument and input file provided.

NEW QUESTION # 36
You want to examine how much Smart Scan activity is occurring.
Which two would provide the information you require?

A. the number of Smart Scans performed for the table on all the storage servers, as shown when performing a list activerequest command using CELLCLI on all the cells
B. the number of Smart Scans performed for the table on all the storage servers, as shown when performing a list ACTIVEREQUEST command using EXACLI on all the cells
C. the number of parallel queries that accessed the table
D. the number of full table scans that accessed the table
E. the number of serial queries that accessed the table

Answer: A,B

Explanation:
To determine the amount of Smart Scan activity on an Exadata Database Machine, you can access two specific commands:
CELLCLI Command: Using the list activerequest command within CELLCLI on all storage cells will show the number of Smart Scans being processed. CELLCLI is an interface specific to Exadata Storage Servers for management and monitoring, and it provides real-time visibility into ongoing Smart Scan operations .
EXACLI Command: Similarly, the list ACTIVEREQUEST command using EXACLI on all storage cells also lists the Smart Scans executed across the storage servers. EXACLI is a remote command-line utility that can be run from a database server to manage storage cells, offering convenient access to similar Smart Scan information .

NEW QUESTION # 37
Which two statements are true about applying updates on Exadata systems?

A. Failed database server updates are rolled back to a working state on a previous release automatically.
B. For regular Exadata updates, yum automatically installs a non-UEK kernel, which can be selected to boot from grub.
C. Updating kernel and RDMA packages on storage cells should be prevented by excluding them with the yum -exclude option.
D. To speed up applying storage server updates in a rolling manner, updating two storage servers simultaneously is recommended.
E. When running a "yum update" for a new Exadata release, all other repositories should be disabled.
F. Failed storage server updates are automatically rolled back to a previous release.

Answer: E,F

Explanation:
According to Oracle's documentation12, some of the statements that are true about applying updates on Exadata systems are:
Failed storage server updates are automatically rolled back to a previous release1.
When running a "yum update" for a new Exadata release, all other repositories should be disabled1.

NEW QUESTION # 38
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