Pass the Oracle Oracle Exadata 1z0-902 Questions and answers with CertsForce

In order to monitor all components of this multirack configuration, Enterprise Manager agents must be deployed on at least two storage servers in both racks and all database servers in both racks. This is according to the Oracle Exadata Database Machine X9M Implementation Essentials official text book [1], in which it states "To monitor all components of the multirack configuration, you must deploy agents on all database servers and at least two storage servers in each rack" (page 6-15).

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.

Oracle ASR covers a range of hardware components on Exadata Database Machines to ensure rapid response and issue resolution. The covered hardware components include critical parts such as:

Fan Trays: These are essential for cooling Exadata components and are covered by ASR in case of failures​.

System Controller (SC): Integral to the operation of Exadata storage servers, SC failures are reported by ASR to ensure the overall system’s reliability and availability​.

I/O Boards: ASR actively monitors and responds to failures in I/O boards, which are crucial for data processing and connectivity within Exadata storage servers​.

The ASR system is optimized to handle hardware-related issues proactively, ensuring that critical components are continuously monitored and replaced as necessary.

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.

Statement B is true as the vm_maker —start-domain command can be used to start a virtual machine manually, as stated in the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (page 65).

Statement E is also true as the vm_maker —auto-start command can be used to configure a virtual machine to start automatically when the KVM host is started [1][2], as stated in the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (page 66).