質問 # 45 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 alert ds_temp> 30" on each database server
D. dbmcli -e "set threshold ds_temp comparison=' >', critical=30" on each database server
正解:D
解説: 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. 質問 # 46 What is the maximum DRAM capacity you can expand an X9M-2 DB Server?
A. 2048GB
B. 512GB
C. 768GB
D. 1024GB
E. 384GB
F. 1536GB
正解:D
解説: According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book, the maximum DRAM capacity you can expand an X9M-2 DB Server is 1024GB. This is the maximum amount of DRAM that can be installed in the server. The specific steps for adding DRAM are outlined in the book and can be referenced here: https://docs.oracle.com/cd/E8092001/E80920/html/x9mhardware_memory.html. 質問 # 47 Examine these commands: 1. Execute "crscti stop cluster -all" as the grid user from one database server. 2. Execute "crscti stop cluster -all" as root from one database server. 3. Power off all network switches. 4. Execute "crscti stop cluster" as root from one database server. 5. Execute "crscti stop cluster" as the grid user from one database server. 6. Power off the rack using the power switches on the PDUs. 7. Execute "shutdown -h now" on all database servers. 8. Execute "shutdown -h now" on all Exadata storage servers. Which is the correct order or the required commands to completely power off an Exadata Database Machine in an orderly fashion?
A. 5, 8, 7, and 6
B. 2, 8, 7, 3, and 6
C. 4, 7, 8, 3, and 6
D. 2, 7, 8, and 6
E. 1, 8, 7, 3 and 6
正解:D 質問 # 48 You have been asked to investigate why an Exadata Database Server stopped communicating on the client network for 10 minutes over the past weekend. Which command would help investigate this?
A. # /opt/oracle.SupportTools/exachk/exachk -from <FridaysDate>17:00:00 -to <SundaysDate>23:59:00
B. # /opt/oracle.SupportTools/ibdiagtools/netcheck/runDiagnostics.pm -from <FridaysDate>17:00:00 -to <SundaysDate>23:59:00
C. # /opt/oracle.ExaWatcher/GetExaWatcherResults.sh -from <FridaysDate>17:00:00 -to <SundaysDate>23:59:00
D. $ ${ORACLEHOME}/suptools/tfa/release/tfahome/bin/tfact1 -from <FridaysDate>17:00:00 -to <SundaysDate>23:59:00
正解:B 質問 # 49 How do ASM failure groups provide redundancy?
A. 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.
B. They ensure that the ASM Flex instances are enabled on a maximum of two database servers or VMs per cluster.
C. Failure groups contain all ASM disks in a single storage server preventing mirror copies being written to the same storage server.
D. Extended Redundancy mirrors data across data centers providing the highest levels of data protection.