Exam 1z0-078 All QuestionsBrowse all questions from this exam
Question 15

Disk group DGRP1 has these attributes:

1. Normal redundancy

2. Two failure groups FG1 and FG2 with two disks each

3. Compatibility settings set to 19.0

The FG1 failure group goes offline due to hardware failure.

Which two statements are true? (Choose two.)

    Correct Answer: A, B

    In a disk group with normal redundancy, losing one failure group lowers the redundancy because normal redundancy setups include mirroring between failure groups. New allocation units continue to be mirrored when feasible, but the redundancy is effectively reduced due to the absence of one failure group. Therefore, new allocation units are mirrored within the remaining failure group, and the redundancy level is lowered until the failed group is restored and resynchronized.

Discussion
lcoleandroOptions: AD

A is true D could be true if the failure of FG1 results in data unavailability or loss that impacts ongoing transactions. However, Oracle ASM is designed to maintain data availability and integrity even in the event of failures. Transactions may experience temporary interruptions or delays, but they typically do not fail outright unless the failure severely impacts data access. B is false because In Oracle ASM, the redundancy level of a disk group is not lowered during a failure. Instead, Oracle ASM dynamically adjusts data allocation and mirroring to maintain redundancy even in the presence of failures. C is false because . Oracle ASM continues to mirror new allocation units across the remaining operational failure group (FG2) to maintain redundancy and data availability. Tracking changes to allocation units is part of ASM's internal management but does not affect the mirroring of new data.