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NEW QUESTION # 28
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 cell attributes name, deviceName, diskType, physicalFirmware
- B. list celldisk attributes name, deviceName, diskType, physicalFirmware
- C. list devices attributes name, deviceName, diskType, physicalFirmware
- D. list physicaldisk attributes name, deviceName, diskType, physicalFirmware
Answer: D
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 # 29
You are providing oversight for the delivery of a new Exadata Database Machine.
1. Stabilize the Exadata Rack.
2. Unpack Oracle Exadata Rack.
3. Review the safety guidelines.
4. Let the Exadata acclimatize for 24 hours.
5. Power on Exadata PDU A.
6. Place Exadata in its allocated space.
7. Power on Exadata PDU B.
What is the correct order of these steps?
- A. 3,2,6,4,1,7,5
- B. 4,3,2,6,1,7,5
- C. 3,2,6,1,4,7,5
- D. 2,6,1,4,3,7,5
- E. 2,3,4,6,1,7,5
Answer: A
Explanation:
The correct sequence is:
Review the safety guidelines. This is important to ensure a safe and successful installation1.
Unpack Oracle Exadata Rack. This involves removing the packaging materials and inspecting the rack for damage or missing components1.
Place Exadata in its allocated space. This involves moving the rack to its final location and securing it with bolts and brackets1.
Let the Exadata acclimatize for 24 hours. This is recommended to allow the rack components to adjust to the ambient temperature and humidity before powering on1.
Stabilize the Exadata Rack. This involves leveling the rack and adjusting its height if needed1.
Power on Exadata PDU B. This involves connecting PDU B to a power source and turning it on1.
Power on Exadata PDU A. This involves connecting PDU A to a power source and turning it on1
NEW QUESTION # 30
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. There is free space available on the hard disks inside the database servers for possible extension of the /uoi file system.
- B. 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.
- C. There is free space available on flashdisks inside the Exadata storage servers to configure Exadata Smart Flash Logs.
- D. There is free space available on flashdisks inside the Exadata storage servers for possible use for storage indexes.
- E. The sparse_<DBM_NAME> diskgroup is created automatically.
Answer: C,D
Explanation:
According to the Oracle Exadata Database Machine Technical Architecture1, the initial storage configuration after the standard (non-virtualized) deployment of a new Exadata Database Machine with High Capacity storage servers includes two ASM disk groups: DATA_<DBM_Name> and RECO_<DBM_NAME>. These disk groups are built on hard disks and flash disks inside the Exadata Storage Servers1.
The correct statements about this configuration are:
Option D: There is free space available on flashdisks inside the Exadata storage servers for possible use for storage indexes. Storage indexes are a feature of Exadata Storage Software that can improve query performance by avoiding unnecessary I/O operations. Storage indexes use a small amount of flash memory to store metadata about data blocks stored on disk1.
Option E: There is free space available on flashdisks inside the Exadata storage servers to configure Exadata Smart Flash Logs. Exadata Smart Flash Logs are another feature of Exadata Storage Software that can improve database performance by using flash memory as an extension of the database redo log buffer. This can reduce latency and increase throughput for redo log writes1.
NEW QUESTION # 31
Which two activities are supported on the storage servers in an Exadata Database Machine?
- A. upgrading the Storage Server software package using rpm
- B. upgrading a device driver for hard disks when inserting a replacement disk after a hard disk failure
- C. configuring secure shell user equivalency for the cellmonitor user
- D. changing the root password
- E. installing an alternative package manager
Answer: C,D
Explanation:
According to the web search results123, the storage servers in an Exadata Database Machine are mainly used for processing data at the storage level and offloading some SQL operations from the database servers. Therefore, the two activities that are supported on the storage servers are:
1. changing the root password
2. configuring secure shell user equivalency for the cellmonitor user
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/dbmso/exadata-introduction.html
NEW QUESTION # 32
Which of the following is NOT a requirement when validating, receiving, unpacking, and planning access route and space requirements for Exadata Database Machine?
- A. All four leveling and stabilizing feet should be raised and out of the way prior to moving the rack.
- B. A conditioned space is required to remove the packaging material to reduce particles before entering the data center.
- C. 914mm of space required above the rack height is required for maintenance access.
- D. Oracle Exadata Rack may only be installed on raised floor environments.
- E. The entire access route to the installation site should be free of raised-pattern flooring that can cause vibration.
- F. The incline of any access route ramp must be less than or equal to 6 degrees.
Answer: D
Explanation:
Exadata Database Machine is a pre-configured and pre-tuned hardware and software system designed to run Oracle Database, it can be installed on raised floor environments, but also on concrete or tile floors
NEW QUESTION # 33
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. -> start /SP/console
- B. -> set /SYS power_state=ON
- C. -> start /System
- D. -> start /SYS/power
- E. -> start /SYSTEM/power
- F. You must be physically present in the data center to start an Exadata Storage Server.
Answer: B
Explanation:
This command is based on the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and other resources. This command sets the power state of the system to ON and starts the storage server. It is the only command that is able to start the storage server remotely. All the other commands are incorrect or require the user to be physically present in the data center.
NEW QUESTION # 34
Which three statements are true about Oracle Configuration Manager (OCM) for an Exadata Database Machine?
- A. It is mandatory to install OCM on all database servers.
- B. It is mandatory to install OCM on at least one database server.
- C. It collects configuration information automatically.
- D. Collected configuration information can be uploaded manually to Oracle.
- E. It collects configuration information on demand.
- F. Collected configuration information can be uploaded automatically to Oracle.
Answer: B,C,D
NEW QUESTION # 35
How is Exadata Secure RDMA Fabric isolation used in X9M-2 with virtualization enabled?
- A. 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.
- 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 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.
- 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 # 36
Which three statements are true about the CELLCLI command?
- A. It can be executed on storage servers.
- B. It requires root privileges to create CELLDISKS and GRIDDISKS.
- C. It can be executed using the DCLI utility.
- D. It can execute commands on multiple storage servers in parallel.
- E. It has command-line history.
Answer: A,C,E
Explanation:
The CellCLI utility supports command-line history.
Each Exadata Storage cell can be monitored, configured, and maintained using the cellcli command line interface.
The dcli utility facilitates centralized management across an Oracle Exadata Storage Server Software realm by automating the execution of CellCLI commands on a set of cells and returning the output to the centralized management location where the dcli utility was run.
NEW QUESTION # 37
Which two sections of the AWR report shows statistics for X9M Persistent Memory Cache?
- A. PMEM Pool cache Read Hits in the Cache Sizes portion of the Report Summary
- B. cell PMEM cache Read Hits in the Database IOs portion of the Performance Summary
- C. PMEM Pool Misses in the Exadata Outlier Summary
- D. PMEM Cache section within Memory Statistics
- E. PMEM Cache section within Exadata Smart Statistics
Answer: B,E
Explanation:
Option C shows the number of read hits from PMEM cache on storage servers which indicates how much data was served from PMEM instead of flash or disk1.
Option E shows detailed information about PMEM cache such as size, utilization, hit ratio, read latency and write latency2.
NEW QUESTION # 38
You are providing oversight for the delivery of a new Exadata Database Machine.
1. Stabilize the Exadata Rack.
2. Unpack Oracle Exadata Rack.
3. Review the safety guidelines.
4. Let the Exadata acclimatize for 24 hours.
5. Power on Exadata PDU A.
6. Place Exadata in its allocated space.
7. Power on Exadata PDU B.
What is the correct order of these steps?
- A. 2,3,4,6,1,7,5
- B. 4,3,2,6,1,7,5
- C. 3,2,6,1,4,7,5
- D. 3,2,6,4,1,7,5
- E. 2,6,1,4,3,7,5
Answer: A
Explanation:
This ordering is based on the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and other resources. First, the Exadata should be stabilized and unpacked (Steps 2 and 3). Then, the safety guidelines should be reviewed (Step 4). The Exadata should then be allowed to acclimatize for 24 hours (Step 4). After that, the Exadata PDU A should be powered on (Step 6) and the Exadata should be placed in its allocated space (Step 6). Finally, the Exadata PDU B should be powered on (Step 7).
NEW QUESTION # 39
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. Even if the backup was limited to writing to four tape drives, eight channels could be specified to expedite the restore process.
- D. 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.
Answer: C,D
NEW QUESTION # 40
Which two statements are true about Auto Service Request (ASR) with an Exadata Database Machine?
- A. ASR Manager opens a service request (SR) automatically after sensors detect hardware faults.
- B. ASR communicates with Oracle support services using HTTPS.
- C. Configuring ASR is mandatory for all Database Machine assets.
- D. ASR can upload configuration metadata to support problem resolution.
- E. ASR Manager must be installed and configured on one of the database servers.
- F. ASR Manager must be installed and configured on a dedicated server external to the Database Machine.
Answer: E,F
NEW QUESTION # 41
Which two statements are true about Auto Service Request (ASR) with an Exadata Database Machine?
- A. ASR communicates with Oracle support services using HTTPS.
- B. Configuring ASR is mandatory for all Database Machine assets.
- C. ASR Manager must be installed and configured on a dedicated server external to the Database Machine.
- D. ASR can upload configuration metadata to support problem resolution.
- E. ASR Manager opens a service request (SR) automatically after sensors detect hardware faults.
- F. ASR Manager must be installed and configured on one of the database servers.
Answer: D,E
Explanation:
D) ASR can upload configuration metadata to support problem resolution1.
E) ASR Manager opens a service request (SR) automatically after sensors detect hardware faults1
https://docs.oracle.com/cd/E37710_01/doc.41/e23333/toc.htm
NEW QUESTION # 42
Which two of the following network connection types can be deployed on the client network ports of an Exadata X9M-2 Database Server?
- A. 2x 25Gb ports on eth1 and eth2 using SFP28 transceivers and OM4 fiber cable for backup network, and 2x 10Gb ports on eth3 and eth4 using RJ45 cat6 cable for client network
- B. 2x 25Gb ports on eth1 and eth2 using SFP28 transceivers and OM4 fiber cable for backup network, and 2x 25Gb ports on eth5 and eth6 using SFP28 transceivers and OM4 fiber cable for client network
- C. 2x 25Gb ports on eth1 and eth2 using SFP28 transceivers and OM4 fibre cable for client network, and 2x 10Gb ports on eth9 and eth10 using RJ45 cat6 cable for backup network
- D. 2x 10Gb ports on eth1 and eth2 using FU45 cat6 cable for client network, and 2x 25Gb ports on eth11 and eth12 using SFP28 transceivers and OM4 fiber cable for backup network
Answer: A,C
Explanation:
Statement D is true as the Exadata X9M-2 Database Server has two 25Gb ports on eth1 and eth2 using SFP28 transceivers and OM4 fiber cable for backup network, and two 10Gb ports on eth3 and eth4 using RJ45 cat6 cable for client network, as stated in the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (page 24).
Statement B is also true as the Exadata X9M-2 Database Server has two 25Gb ports on eth1 and eth2 using SFP28 transceivers and OM4 fibre cable for client network [1][2], and two 10Gb ports on eth9 and eth10 using RJ45 cat6 cable for backup network, as stated in the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (page 24).
NEW QUESTION # 43
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, 8, 3, 4, 2, 1
- D. 6, 1, 2, 7, 5, 8
Answer: A
Explanation:
The steps and the order in which they should be executed to create an ACFS Filesystem for use as a staging area for data loads are:
asmcrad volcreate -G data -s 1024G acfs_dataload_vol : This command creates a new volume in the data diskgroup, with a size of 1024 GB, and named acfs_dataload_vol.
asmcmd vol info -G data acfs_dataload_vol | grep Device: This command will show the device name of the newly created volume
/usr/sbin/mkfs -t acfs /dev/asm/ac:fs_dataload_vol-123: This command creates a new ACFS filesystem on the volume created in step 1 sudo /u01/app/19.0.0.0/grid/bin/srvctl start filesystem -device /dev/asn/acfs_dataload_vol-123: This command starts the filesystem created in step 3 sudo chovn -R oracle:dba /mnt/acfs_dataload_vol: This command changes the ownership of the /mnt/acfs_dataload_vol to the oracle:dba user.
/sbin/acfsutil snap create -v data_load /mnt/acfs_dataload_vol: This command creates a snapshot of the filesystem to be used as a staging area.
acfsutil size +2S0G -d /dev/asm/acfs_dataload_vol-123 /mnt/acfs_dataload_vol/ : This command increases the size of the filesystem by 2GB
/u01/app/19-G.O-Q7grid/bin/srvctl add filesystem -device /dev/asm/acfs_dataload_vol-
NEW QUESTION # 44
Your system administrator reports an amber, non-blinking light on one of your Exadata storage disks. You immediately execute the 'list physicaldisk where diskType=HardDisk and status=failed DETAIL' command on the Exadata storage system and the specified disk is indeed reported as failed. Platinum Support has not been enabled for this system. Enterprise Manager Cloud Control is monitoring the system.
What is the next step that you should perform before you do anything else?
- A. Wait for the email of the failure that Exadata or Enterprise Manager will send.
- B. Download and run the latest exadiag tool.
- C. Check the database to see if any rebalance operations are active.
- D. Ask the system administrator to replace the broken disk with a spare.
- E. Call Oracle Support and make an appointment so that the drive can be replaced.
- F. Wait for a blue light to appear on the disk if the rebalance operation is running.
Answer: D
NEW QUESTION # 45
Which are two correct statements about backing up Exadata Database Machine?
- A. Use a snapshot-based backup of an Oracle Exadata Database Machine database server software.
- B. The M.2 disk is hot pluggable and can be replaced when the power is on, but you will have to restore the system data manually.
- C. Backup of the Oracle Cluster Registry, which also contains Voting Disk information, is automatically maintained on the file system of the first database server.
- D. Backing up Exadata Storage Server Software is critical for restoration.
- E. For high availability, system area can be on the first two disks and M.2 devices.
Answer: C,D
Explanation:
[1] Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1][2], Chapter 4: Oracle Clusterware [2] Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1][2], Chapter 8: Oracle Exadata Storage Server Software [3] Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1][2], Chapter 9: Oracle Exadata Storage Server Infrastructure
https://www.oracle.com/technetwork/database/availability/exadata-backup-recovery-bp-3633870.pdf
NEW QUESTION # 46
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