Oracle Exadata Database Machine X9M Implementation Essentials: 1Z0-902

Correct Answer: CD

Explanation: According to the Oracle documentation1, two monitoring tools that might be useful in examining I/O performance for the prod database are:

cellcli (or exacli/exadcli) to examine storage server metrics such as database, category, ceiidisk, and griddisk (D). This tool can help you monitor the I/O Resource Management (IORM) metrics and identify any bottlenecks or imbalances in the

storage layer.

I/O-specific dynamic performance views such as v$iostat_fiie, v$iostat_function, and v$iostat_consumer_group from the prod database instances using SQL *p1us ? These views can help you monitor the I/O activity and latency at the file,

function, and consumer group level.

Correct Answer: ABD

Explanation: According to Oracle's documentation1, the customer options for hosting the Platinum Services Advanced Support Gateway are: Provide individual x86 64-Bit gateway hardware1 Purchase the recommended x86 64-Bit gateway hardware from Oracle1 Install on Oracle Database Appliance2

Correct Answer: B

Explanation: According to Oracle's documentation12, ASM failure groups provide redundancy by storing mirror copies of data on different disks or storage servers. When ASM allocates an extent for a normal redundancy file, ASM allocates a

primary copy and a secondary copy. ASM chooses the disk on which to store the secondary copy so that it is in a different failure group than the primary copy1. This way, if one disk or storage server fails, ASM can still access the data from

another failure group2. Therefore, the statement that is true about how ASM failure groups provide redundancy is:

Failure groups contain all ASM disks in a single storage server preventing mirror copies being written to the same storage server.