[Jul 13, 2023] Updates Up to 365 days On Valid 1z1-902 Braindumps [Q19-Q39]

[Jul 13, 2023] Updates Up to 365 days On Valid 1z1-902 Braindumps

Best Quality1z1-902 Exam Questions Oracle Test To Gain Brilliante Result

By passing the Oracle 1z1-902 exam, individuals can demonstrate their knowledge and expertise in implementing and managing Oracle Exadata Database Machine X8M systems. Oracle Exadata Database Machine X8M Implementation Essentials certification can help individuals enhance their career prospects and open up new opportunities in the field of database administration and management.

 

NEW QUESTION # 19
Which two statements are true in regards to starting the Exadata Virtual Machine?

• A. Use vm_maker -auto-start command to configure a virtual machine to start automatically when the KVM host is started.
• B. Use vm_maker -start-domain to start a virtual machine manually.
• C. Use vm_maker boot-from-iso command to boot a virtual machine.
• D. To streamline the diagnosis of virtual machines, one ISO file is used for multiple Oracle Exadata System Software releases.
• E. To see Oracle Linux boot messages during guest startup, use -console option with the vm_maker -start-domain command.

Answer: A,C

NEW QUESTION # 20
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 must be invoked with the -rolling argument with all database and storage servers listed in a single input file.
• B. patchmgr must be invoked with the -rolling argument. Each component type must be upgraded independently of the other.
• C. patchmgr will apply patches in component groups consisting of 1 database server and 2 storage servers to minimize disruption.
• 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: A

NEW QUESTION # 21
An Exadata X9M-2 Elastic Rack with 4 Database Servers and 8 HC Storage Servers and 3-phase 24kVA PDUs is being installed in a Data Center. However, the Data Center is only providing enough power for a single cable from each PDU. Which statement is correct?

• A. The installation cannot proceed until two power feeds are available per PDU.
• B. The power cables from the servers to the PDUs can be rearranged inside the rack following OECA guidance to utilize a single PDU power cable.
• C. The installation can go ahead, no change is required.
• D. A splitter cable can be used to provide power to all PDU cables.

Answer: A

Explanation:
In order for an Exadata X9M-2 Elastic Rack to be installed, two power feeds are required for each of the three-phase 24kVA PDUs. A single cable from each PDU will not be enough to power the rack, and neither a splitter cable nor rearrangement of the power cables from the servers to the PDUs will be able to provide sufficient power for the system. Therefore, the installation cannot proceed until two power feeds are available per PDU.
For more information about power requirements for Exadata X9M-2 Elastic Racks, refer to the Oracle Exadata Database Machine X9M Implementation Essentials official text book and resources.
Search results: [1] Oracle Exadata Database Machine X9M-2 Full Rack Installation - Oracle Docs [2] Exadata Database Machine X8M-2 Mid-Size Rack Installation - Oracle Docs
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/dbmin/exadata-site-requirements.html

NEW QUESTION # 22
Which three steps are required to expand an Exadata X9M-2 Database Server with the lowest memory configuration available to the highest memory configuration?

• A. Add 24x 32GB DIMMs.
• B. Add 12x 64GB DIMMs.
• C. Add 16x 32GB DIMMs.
• D. Add 16x 64GB DIMMs.
• E. Add 32x 64GB DIMMs.
• F. Memory cannot be expanded on Exadata X9M-2 Database Servers.
• G. Add 12x 32GB DIMMs.
• H. Shutdown the Database Server if running.
• I. Remove existing memory modules.

Answer: D,H,I

Explanation:
1. Remove existing memory modules: Before adding new memory modules, the existing memory modules should be removed.
2. Add 16x 64GB DIMMs: The new DIMMs should be added, in this case is 16 DIMMs of 64GB each, which will expand the memory to the highest configuration available.
3. Shutdown the Database Server if running: The Database Server should be shutdown before adding new memory modules in order to prevent any possible data loss or corruption.
The steps required to expand an Exadata X9M-2 Database Server with the lowest memory configuration available to the highest memory configuration are as follows:
Shutdown the Database Server if running.
Remove existing memory modules.
Add 16x 64GB DIMMs.
For reference, the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book states that "the lowest memory configuration for the Exadata X9M-2 Database Servers is 384GB and the highest is 768GB [1]. The memory upgrade is done in increments of 64GB using 16x 64GB DIMMs".

NEW QUESTION # 23
You have been asked by Oracle Support to check the firmware of the hard & flash disks in a storage server. Which cellcli command should you use to get this information?

• A. list devices attributes name, deviceName, diskType, physicalFirmware
• B. list physicaldisk attributes name, deviceName, diskType, physicalFirmware
• C. list celldisk attributes name, deviceName, diskType, physicalFirmware
• D. list cell attributes name, deviceName, diskType, physicalFirmware

Answer: B

NEW QUESTION # 24
Which three statements are true about the CELLCLI command?

• A. It can execute commands on multiple storage servers in parallel.
• B. It can be executed using the DCLI utility.
• C. It has command-line history.
• D. It requires root privileges to create CELLDISKS and GRIDDISKS.
• E. It can be executed on storage servers.

Answer: B,C,E

Explanation:
The statements that are true about the CellCLI command are:
It has command-line history . According to 1, you can use the up and down arrow keys to scroll through previous commands that you entered in CellCLI . You can also use Ctrl+R to search for a previous command by entering part of it .
It can be executed on storage servers . According to 1, you can invoke CellCLI by logging in to the Exadata cell as cellmonitor , celladmin , or root user and typing "cellcli" . Within CellCLI , you can perform various management and monitoring tasks for the cell134.
It can be executed using the DCLI utility . According to 5, DCLI (distributed CLI) is another utility that can be used to execute scripts and commands across multiple storage cells from a single interface. You can use DCLI to run CellCLI commands on multiple cells at once54.

NEW QUESTION # 25
For which four component failures on an X9M Database Machine does Auto Service Request (ASR) raise service requests?

• A. Cisco management switch
• B. RoCE network interface cards in the database servers
• C. RoCE network interface cards in the storage servers
• D. power distribution units
• E. Cisco RDMA over Converged Ethernet (RoCE) switches
• F. power supplies in the database servers
• G. fans in the storage servers

Answer: A,C,E,F

NEW QUESTION # 26
You have been asked by Oracle Support to check the firmware of the hard & flash disks in a storage server. Which cellcli command should you use to get this information?

• A. list devices attributes name, deviceName, diskType, physicalFirmware
• B. list physicaldisk attributes name, deviceName, diskType, physicalFirmware
• C. list celldisk attributes name, deviceName, diskType, physicalFirmware
• D. list cell attributes name, deviceName, diskType, physicalFirmware

Answer: B

Explanation:
This command will display the name, deviceName, diskType and physicalFirmware attributes of the physicaldisks in a storage server, as explained in the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (page 85).
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/sagug/exadata-storage-server-cellcli.html

NEW QUESTION # 27
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. the RDMA over Converged Ethernet (RoCE) switches
• B. Oracle clusterware on the database server
• C. the storage server ILOM
• D. the Power Distribution Units (PDUs)
• E. ASM instances
• F. Hybrid Columnar Compression (HCC) ratios on Extended (XT) storage servers

Answer: B,C,E

Explanation:
1. The Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (page 6-25) recommends using the Exadata-specific Enterprise Manager Plug-Ins to monitor ASM instances.
2. Additionally, the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (page 6-25) recommends using the Exadata-specific Enterprise Manager Plug-Ins to monitor the storage server ILOM.
3. The Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (page 6-25) also recommends using the Exadata-specific Enterprise Manager Plug-Ins to monitor Oracle clusterware on the database server.

NEW QUESTION # 28
What are two recommended configuration best practices for backup and recovery on Exadata?

• A. Placing the backup network on dedicated switches installed in the top of the rack (ToR) has the benefits of isolating the backup network from other workloads and providing a greater level of control.
• B. When off-site long-term backup retention is needed, use Oracle Database Backup Cloud Service as a low-cost, offsite scalable storage for a disaster recovery solution.
• C. The internal Recovery Appliance backup and restore processing is optimized when the RMAN FILESPERSET parameter is set to 1 for the level 1 incremental backup set.
• D. Even if the backup was limited to writing to four tape drives, eight channels could be specified to expedite the restore process.

Answer: A,B

Explanation:
According to the Oracle Exadata Database Machine documentation12, two recommended configuration best practices for backup and recovery on Exadata are:
1. Placing the backup network on dedicated switches installed in the top of the rack (ToR) has the benefits of isolating the backup network from other workloads and providing a greater level of control.
2. When off-site long-term backup retention is needed, use Oracle Database Backup Cloud Service as a low-cost, offsite scalable storage for a disaster recovery solution.

NEW QUESTION # 29
Your customer needs to ensure that their data is available on the Exadata machine during updates. The customer wants to be able to update one server at a time but still be protected against single-node server failure.
What ASM redundancy level should they use?

• A. High
• B. Sparse
• C. Normal
• D. Extended
• E. External

Answer: A

Explanation:
https://www.oracle.com/technetwork/database/exadata/maa-exadata-asm-cloud-3656632.pdf

NEW QUESTION # 30
You have been asked to design a backup solution for an Exadata X9M-2 Quarter Rack with Extreme Flash Storage Servers connected to a new ZFS Storage Appliance ZS7 with 2 Storage Controllers with 100Gb Ethernet cards and 3 Storage Trays. You are using Oracle Exadata Configuration Assistant to validate the rack layout.
1. Use "Add Equipment" to add the Exadata X9M EF Storage Servers, starting from RU10.
2. Use drop down to add ZFS Storage Appliance Controllers.
3. You cannot add ZFS Storage Appliance to an Exadata Rack.
4. Use "Add Equipment" to add the ZFS Storage Trays, starting from RU1.
5. Use drop down to add ZFS Storage Trays.
6. Use "Add Equipment" to add the Exadata X9M Database Servers, starting from RU16.
7. Use "Add Equipment" to add the Exadata X9M EF Storage Servers, starting from RU1.
8. Use drop down to add Exadata X9M EF Storage Servers.
9. Use "Add Equipment" to add the ZFS Storage Controllers, starting from RU27.
10. Use drop down to add Exadata X9M Database Servers.
11. Use "Add Equipment" to add the ZFS Storage Trays, starting from RU31.
Which of these steps are correct and what is their correct order?

• A. 4,1, 6, 9
• B. 7,6,9,11
• C. 10, 8, 2, 5
• D. 0
• E. 10, 8, 9, 11

Answer: E

Explanation:
The correct order of steps is 10, 8, 9, 11. The 10th step is to use the drop down to add Exadata X9M Database Servers, the 8th step is to use the drop down to add Exadata X9M EF Storage Servers, the 9th step is to use "Add Equipment" to add the ZFS Storage Controllers, and the 11th step is to use "Add Equipment" to add the ZFS Storage Trays. These steps are referenced in the Oracle Exadata Database Machine X9M Implementation Essentials Official Textbook, which is available online at https://docs.oracle.com/cd/E80437_01/E80437/html/index.html.

NEW QUESTION # 31
Which statement is true about the patching features provided in Platinum Services?

• A. Patching services are available for the full software stack up to twice per year.
• B. The rolling and complete down time approaches are two options to patching.
• C. Oracle Platinum Service covers Exadata storage software and firmware patching, but customers must perform the database patching.
• D. Patching is done automatically during business hours.

Answer: A

Explanation:
Oracle Platinum Services provides patching features for the full software stack, which includes operating systems, virtualization, storage software and firmware, and databases. This service is typically performed up to twice per year, allowing customers to schedule the patching at their convenience. The patching is usually done to keep the software and firmware up-to-date and to fix any known security vulnerabilities. It's important to note that patching services are not done automatically during business hours, customer's involvement and schedule is needed, and the rolling and complete downtime approaches are options to minimize the impact on the system during patching.
The correct statement about the patching features provided in Platinum Services is that patching services are available for the full software stack up to twice per year. Oracle Platinum Service covers Exadata storage software and firmware patching, and customers must also perform the database patching. The rolling and complete down time approaches are two options for patching, and patching should be scheduled for times when the system is not being heavily used. Patching is not done automatically during business hours. This is covered in section 4.13 of the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and Resources [1].
[1] https://docs.oracle.com/en/engineered-systems/exadata-database-machine/x9m/exad-implementing-database-machine-x9m.pdf Search results: [1] Oracle Exadata Storage Server Patching [1][2]. Oracle Exadata Storage Server patching is performed by a team of Oracle engineers [3][2], and includes the latest Oracle... [2] Patching and Upgrades. Oracle Database Machine provides automated patching and upgrades for the full Exadata software stack, up to twice a year, with... [3] Virtualized Exadata. Oracle Database Machine X9M-2 comes with a choice of two patching approaches to accommodate different customer needs: Rolling... [4] Jan 10, 2017 ... Exadata Patching Process. Oracle Exadata Storage Server patching is performed by a team of Oracle engineers [3][2], and includes the latest...

NEW QUESTION # 32
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. ASM instances
• D. the RDMA over Converged Ethernet (RoCE) switches
• E. the storage server ILOM
• F. Hybrid Columnar Compression (HCC) ratios on Extended (XT) storage servers

Answer: B,D,E

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 # 33
Which two statements are true in regards to starting the Exadata Virtual Machine?

• A. Use vm_maker -start-domain to start a virtual machine manually.
• B. Use vm_maker -auto-start command to configure a virtual machine to start automatically when the KVM host is started.
• C. Use vm_maker boot-from-iso command to boot a virtual machine.
• D. To streamline the diagnosis of virtual machines, one ISO file is used for multiple Oracle Exadata System Software releases.
• E. To see Oracle Linux boot messages during guest startup, use -console option with the vm_maker -start-domain command.

Answer: A,B

NEW QUESTION # 34
Which dbmcli command is NOT valid on Exadata X9M?

• A. dbmcli -e "LIST METRICCURRENT WHERE name = 'DS_TEMP' "
• B. dbmcli -e "LIST ALERTHISTORY WHERE agelnMinutes < 15"
• C. dbmcli -e "LIST METRICHISTORY WHERE name LIKE 'DS_.*'"
• D. dbmcli -e "LIST IBPORT DETAIL"

Answer: B

Explanation:
1. dbmcli -e "LIST METRICHISTORY WHERE name LIKE 'DS_.*'" is valid command and it is used to list the historical values for metrics where the name starts with "DS_."
2. dbmcli -e "LIST METRICCURRENT WHERE name = 'DS_TEMP' " is valid command and it is used to list the current value of the metric named "DS_TEMP"
3. dbmcli -e "LIST IBPORT DETAIL" is valid command and it is used to list the InfiniBand ports and details of the Exadata X9M.
"dbmcli" is a command-line tool that is used to manage and monitor the Exadata Database Machine. It allows you to perform various tasks such as managing the database, storage, and network components, and monitoring the performance and health of the machine. The command "dbmcli -e "LIST ALERTHISTORY WHERE agelnMinutes < 15" is not a valid command, it is not supported on Exadata X9M.

NEW QUESTION # 35
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 celladmin user
• C. hardware monitoring using the storage server ILOM
• D. using the CELLCLI CALIBRATE command on the storage server after logging in as the root user

Answer: A,B

NEW QUESTION # 36
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. 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
• B. OS I/O metrics using OS tools such as iostat on the database servers
• C. cellcli (or exacli/exadcli) to examine storage server metrics such as database, category, ceiidisk, and griddisk
• D. OS I/O metrics using OS tools such as iostat on the storage servers
• E. OS I/O metrics using Enterprise Manager host pages for the storage servers

Answer: B,C

NEW QUESTION # 37
Which dbmcli command is NOT valid on Exadata X9M?

• A. dbmcli -e "LIST ALERTHISTORY WHERE agelnMinutes < 15"
• B. dbmcli -e "LIST METRICCURRENT WHERE name = 'DS_TEMP' "
• C. dbmcli -e "LIST IBPORT DETAIL"
• D. dbmcli -e "LIST METRICHISTORY WHERE name LIKE 'DS_.*'"

Answer: C

Explanation:
The dbmcli -e "LIST IBPORT DETAIL" command is not valid on Exadata X9M. According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1][2], this command is only valid on Exadata X3 and X4 models. The other three commands are valid on Exadata X9M.

NEW QUESTION # 38
Which are two correct statements for managing virtual deployment using Oracle Exadata Deployment Assistant (OEDA)?

• A. OEDA sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA.
• B. There is no limit on the number of VMs in an Exadata rack as long as the Exadata rack has adequate resources.
• C. OEDA deployment steps include calibrate cells, create cell disks, and resecure machine.
• D. OEDA allows customers to have both bare metal (BM) and virtual machine (VM) in an Exadata X9M Quarter Rack.

Answer: A,C

Explanation:
1. OEDA deployment steps include calibrate cells, create cell disks, and resecure machine2.
2. OEDA sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA2.

NEW QUESTION # 39
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