Which are two correct statements about backing up Exadata Database Machine?
Options:
A.
Backup of the Oracle Cluster Registry, which also contains Voting Disk information, is automatically maintained on the file system of the first database server.
B.
Backing up Exadata Storage Server Software is critical for restoration.
C.
For high availability, system area can be on the first two disks and M.2 devices.
D.
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.
E.
Use a snapshot-based backup of an Oracle Exadata Database Machine database server software.
[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
An Exadata storage server physical disk on an X9M-2 high-capacity full rack entered the predictive failure state. Which two steps must you perform to replace this failed physical disk?
Options:
A.
Replace the failed physical disk.
B.
Add the griddisks back into the ASM diskgroup they used to be a member of.
C.
Identify the griddisks located on the failed physical disk and drop them from the associated ASM diskgroups.
D.
Rebalance the data on the effected griddisks before performing a manual drop command.
E.
Create a new celldisk and new griddisks on the replaced physical disk.
F.
Verify that the griddisks located on the physical disk have been successfully dropped from the associated ASM diskgroups.
Once the physical disk has been replaced, you will need to create a new celldisk and griddisks on the replaced physical disk. After the griddisks have been dropped from the associated ASM diskgroups, you can then add the griddisks back into the ASM diskgroup they used to be a member of and rebalance the data on the effected griddisks. Finally, you should verify that the griddisks located on the physical disk have been successfully dropped from the associated ASM diskgroups.
Questions 6
Which two statements are false about backup to ZFS Storage Appliance (ZFSSA)?
Options:
A.
ZFSSA may connect directly to the Exadata 100Gb RoCE network switches.
B.
Top of Rack (ToR) switches are managed as part of the hardware stack and software levels are upgraded during the patching process.
C.
When backing up multi-rack systems, sharing Exadata X9M switches is recommended.
D.
ZFS Snapshots can provide rapid cloning of development and test environment.
A. 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.
Questions 7
What is the maximum DRAM capacity you can expand an X9M-2 DB Server?
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
