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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q47-Q52):
NEW QUESTION # 47
What is the maximum DRAM capacity you can expand an X9M-2 DB Server?
- A. 768GB
- B. 512GB
- C. 1536GB
- D. 384GB
- E. 1024GB
- F. 2048GB
Answer: C
Explanation:
According to 1, Exadata X9M-2 Database Servers are based on Intel Xeon Platinum 8368Y processors with 32 cores and 768 GB of DRAM memory per server. This memory can be expanded up to 1.5 TB per server by adding 24 x 32 GB DIMMs. The DRAM memory is used for buffer cache, PGA, and other database purposes1. Exadata X9M-2 Database Servers also have 25.6 TB of Persistent Memory Acceleration (PMEM) per server, which is used for log writes and columnar data caching1. PMEM is a new type of memory that combines the speed of DRAM with the persistence of flash2. Exadata X9M-2 Database Servers are designed to run Oracle Database workloads with high performance, scalability, and reliability2
NEW QUESTION # 48
Which two statements are false about backup to ZFS Storage Appliance (ZFSSA)?
- A. When backing up multi-rack systems, sharing Exadata X9M switches is recommended.
- B. Top of Rack (ToR) switches are managed as part of the hardware stack and software levels are upgraded during the patching process.
- C. ZFS Snapshots can provide rapid cloning of development and test environment.
- D. ZFSSA may connect directly to the Exadata 100Gb RoCE network switches.
Answer: A,D
Explanation:
1. ZFS Storage Appliance (ZFSSA) can't connect directly to the Exadata 100Gb RoCE network switches. ZFSSA uses Fibre Channel protocol to connect to the Exadata storage cells. C. When backing up multi-rack systems, sharing Exadata X9M switches is not recommended. Each rack should have its own switches to minimize the risk of data loss due to switch failure.
Review the safety guidelines.
Unpack Oracle Exadata Rack.
Let the Exadata acclimatize for 24 hours.
Place Exadata in its allocated space.
Stabilize the Exadata Rack.
Power on Exadata PDU A.
Power on Exadata PDU B.
This order ensures that the necessary safety precautions are taken before installing the Exadata Database Machine, and that the machine is allowed to acclimate to its new environment before being powered on.
NEW QUESTION # 49
Which three statements are true about the CELLCLI command?
- A. It can be executed on storage servers.
- B. It can execute commands on multiple storage servers in parallel.
- C. It has command-line history.
- D. It requires root privileges to create CELLDISKS and GRIDDISKS.
- E. It can be executed using the DCLI utility.
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.
References: http://docs.oracle.com/cd/E80920_01/SAGUG/exadata-storage-server-cellcli.htm
NEW QUESTION # 50
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. External
- C. Extended
- D. Normal
- E. Sparse
Answer: A
Explanation:
https://www.oracle.com/technetwork/database/exadata/maa-exadata-asm-cloud-3656632.pdf
NEW QUESTION # 51
Which dbmcli command is NOT valid on Exadata X9M?
- A. dbmcli -e "LIST IBPORT DETAIL"
- B. dbmcli -e "LIST METRICHISTORY WHERE name LIKE 'DS_.*'"
B) dbmcli -e "LIST METRICCURRENT WHERE name = 'DS_TEMP' " - C. dbmcli -e "LIST ALERTHISTORY WHERE agelnMinutes < 15"
Answer: C
NEW QUESTION # 52
......
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