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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q52-Q57):

NEW QUESTION # 52
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/power
C. -> start /System
D. You must be physically present in the data center to start an Exadata Storage Server.
E. -> start /SYS/power
F. -> start /SP/console

Answer: C

NEW QUESTION # 53
You plan to monitor the status of the motherboard, memory, power, fans, and network cards on the database nodes in your Exadata Database Machine using Enterprise Manager.
Where must you set the thresholds for these hardware components and why, to assure that sensor readings, faults, and any related alerts, are visible in Enterprise Manager?

A. No thresholds need to be set because they are preset in the ILOM and these are sufficient for monitoring.
B. Set thresholds in ILOM and in Enterprise Manager because they are not preset anywhere and must be set in both places.
C. No thresholds need to be set because they are preset in the ILOM and in Enterprise Manager
D. Set thresholds only in ILOM because they are not preset anywhere but need to be set only in ILOM.

Answer: C

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. 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. 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.

Answer: D

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 # 55
You are concerned about the operating temperature of the database servers in your Exadata Full Rack and want to be alerted if the server exceeds 30C.
What command should use use to generate alerts for such an event?

A. dbmcli -e "create threshold ds_temp comparison='>', critical=30" on each database server
B. dbmcli -e "alert metriccurrent ds_temp where metricValue > 30" on each database server
C. dbmcli -e "set threshold ds_temp comparison=' >', critical=30" on each database server
D. dbmcli -e "set alert ds_temp> 30" on each database server

Answer: C

Explanation:
The Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (page 5-54) recommends using the dbmcli command to set thresholds on metrics, such as temperature. To do this, you should use the following command:
dbmcli -e "set threshold ds_temp comparison=' >', critical=30" on each database server.
This will generate an alert if the temperature exceeds 30C.

NEW QUESTION # 56
Examine this list of software components:
1. Oracle KVM Guest
2. Oracle Enterprise Manager Agent (OMA)
3. ASM instance
4. RDBMS instance
5. Automatic Diagnostic Repository Command Interpreter (ADRCI)
6. CELLCLI
7. Cell Server(CELLSRV)
8. diskmon
9. Restart Server (RS)
10. Management Server (MS)
What is the correct location where these software components can run in the standard Exadata Database Machine deployment?

A. 1, 2, 3, 4, 5, 8, 9 and 10 run on the database servers; 5, 6,7, 9 and 10 run on the Exadata storage servers.
B. 3, 4, 8, and 10 run on the database servers; 1, 2, 5, 6, 7 and 9 run on the Exadata storage servers.
C. 1, 2, 3, 4, 8 and 9 run on the database servers; 5, 6, 7, 9 and 10 run on the Exadata storage servers.
D. 2, 3, 4, 8, and 10 run on the database servers; 1, 5, 6, 7and 9 run on the Exadata storage servers.
E. 1, 2, 3, 4, 9 and 10 run on the database servers; 5, 6, 7, 8, 9, and 10 run on the Exadata storage servers.

Answer: A

Explanation:
Oracle KVM Guest: This is a virtual machine that runs on top of Oracle Linux KVM hypervisor. It can be used to run Oracle Database or other applications on Exadata Database Machine2. Therefore, it runs on the Database Servers.
Oracle Enterprise Manager Agent (OMA): This is a software agent that communicates with Oracle Enterprise Manager Cloud Control and provides monitoring and management capabilities for Exadata Database Machine2. Therefore, it runs on both Database Servers and Storage Servers.
ASM instance: This is an instance of Oracle Automatic Storage Management (ASM), which is a volume manager and a file system for Oracle Database files. It manages disk groups that span across multiple Storage Servers2. Therefore, it runs on the Database Servers.
RDBMS instance: This is an instance of Oracle Database that processes SQL statements and executes transactions. It uses ASM disk groups to store data files, control files, redo log files, etc2. Therefore, it runs on the Database Servers.
Automatic Diagnostic Repository Command Interpreter (ADRCI): This is a command-line tool that enables you to view diagnostic data stored in the Automatic Diagnostic Repository (ADR). ADR is a file-based repository for database diagnostic data such as trace files, alert logs, etc2. Therefore, ADRCI runs on both Database Servers and Storage Servers, depending on where the ADR is located.
CELLCLI: This is a command-line interface that enables you to configure and manage Exadata Storage Server Software. It allows you to perform tasks such as creating disk groups, monitoring cell health, applying patches, etc2. Therefore, it runs on the Storage Servers.
Cell Server(CELLSRV): This is a process that runs on each Storage Server and handles I/O requests from the Database Servers. It implements Exadata Smart Scan , which offloads data-intensive SQL operations from the Database Servers to the Storage Servers2. Therefore, it runs on the Storage Servers.
diskmon: This is a process that monitors the status of disks and flash devices on each Storage Server. It reports disk failures and performs automatic disk reclamation2. Therefore, it runs on the Storage Servers.
Restart Server (RS): This is a process that manages automatic restarts of critical processes such as CELLSRV , MS , or OMA in case of failures. It also handles graceful shutdowns and startups of all processes on each server2. Therefore, it runs on both Database Servers and Storage Servers.
Management Server (MS): This is a process that provides management services for each server such as collecting metrics , logging events , executing commands from CELLCLI , etc2. Therefore, it runs on both Database Servers and Storage Servers

NEW QUESTION # 57
......

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