Oracle Database Administration 2019 Certified Professional — Question 88

Which three statements are true about accessing ASM files? (Choose three.)

Answer options

• A. Database instances perform read I/O using an ASM instance as an I/O Server.
• B. Database instances can write metadata to ASM diskgroups.
• C. Database instances perform read I/O directly to ASM Disks.
• D. ASM instances can write metadata to ASM diskgroups.
• E. If a database instance writes to an ASM-based datafile whose redundancy attribute is set to mirror, then the ASM instance writes the mirror copy.

Correct answer: B, C, D

Explanation

The correct statements are B, C, and D. Statement B is true because database instances do write metadata to ASM diskgroups. C is accurate as database instances perform read I/O directly to ASM Disks. D is also correct since ASM instances can write metadata. Option A is incorrect because database instances do not use ASM instances as I/O Servers for read I/O, and E is not relevant to the question since it discusses a specific scenario rather than general access statements.