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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q11-Q16):

NEW QUESTION # 11
Which dbmcli command is NOT valid on Exadata X9M?

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

Answer: B

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.
https://forums.oracle.com/ords/apexds/map/tech/apps-infra/discussion/4342715/monitoring-roce-performance

NEW QUESTION # 12
You want to monitor how a large production table is accessed. Especially, you are interested to see how the access on that particular table leverages the benefits of the Exadata Platform.
Which two actions are NOT appropriate for that purpose?

A. You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table.
B. You query v$segment_statistics and filter for the Object ID of your table from dba_objects and the the column STATISTIC_NAME='optimized physical reads'.
C. YOU query VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table.
D. You run the CellCli-command list activerequest , filtering for the attributes ioReason and objectNumber, that you specify as 'Smart Scan' and the Object ID of your table from DBA_OBJECTS.

Answer: A,C

Explanation:
1. YOU query VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table. This does not show how much data was filtered by Smart Scan, but only how much data was returned after Smart Scan12.
2. You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table. This does not show how much data was filtered by Smart Scan for a specific table, but only for all tables in a session12.
https://www.databasejournal.com/oracle/monitoring-smart-scans-in-oracle-exadata/

NEW QUESTION # 13
Which are three customer options for hosting the Platinum Services Advanced Support Gateway?

A. Install on Oracle Database Appliance.
B. Provide individual x86 64-Bit gateway hardware.
C. Install in Oracle Virtual Machine with required hardware.
D. Purchase the recommended x86 64-Bit gateway hardware from Oracle.
E. Install on Exadata Engineered System.

Answer: A,C,E

Explanation:
The Platinum Services Advanced Support Gateway is a component of Oracle's Platinum Services offering that enables customers to access advanced support features and tools, such as automated problem diagnosis and resolution. Customers have the option to host the Advanced Support Gateway on an Oracle Database Appliance, Oracle Virtual Machine with required hardware, or an Exadata Engineered System. These options allow customers to leverage existing infrastructure and resources to host the gateway, rather than needing to purchase and install new hardware. Providing individual x86 64-Bit gateway hardware or purchase the recommended x86 64-Bit gateway hardware from Oracle are also options but it depends on the customer's infrastructure and resources.

NEW QUESTION # 14
Which two quarantine types can disable Smart Scan for multiple databases that offload SQL statements to a cell on an Exadata Database Machine?

A. Manually created Quarantine
B. Disk Region Quarantine
C. Database Quarantine
D. SQL Plan Quarantine
E. Cell Offload Quarantine

Answer: D,E

Explanation:
A and E are the two correct quarantine types that can disable Smart Scan for multiple databases that offload SQL statements to a cell on an Exadata Database Machine. A is correct because SQL Plan Quarantine will disable Smart Scan for all queries related to the SQL plan that was placed in the SQL Plan Quarantine [1]. E is correct because the Cell Offload Quarantine will disable Smart Scan for all queries offloaded to Oracle Database Exadata Storage Server Software [2]. The other statements (B, C, and D) are incorrect.
[1] Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book , Chapter 13 [1][2]: Oracle Database Exadata Storage Server Software [2] Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book , Chapter 15 [1][2]: Oracle Database Exadata Storage Server Configuration
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/sagug/exadata-storage-server-software-introduction.html

NEW QUESTION # 15
What is the maximum DRAM capacity you can expand an X9M-2 DB Server?

A. 384GB
B. 512GB
C. 768GB
D. 1536GB
E. 2048GB
F. 1024GB

Answer: D

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 # 16
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