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Dell EMC Exam D-XTR-DS-A-24 Topic 4 Question 28 Discussion

Actual exam question for Dell EMC's D-XTR-DS-A-24 exam
Question #: 28
Topic #: 4
[All D-XTR-DS-A-24 Questions]

What should the Oracle Redo Log block size be set to in order to prevent log entries from being misaligned by read-modify-write operations for an Oracle database?

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Suggested Answer: B

The Oracle Redo Log block size is recommended to be set to 8 kB. This is based on the best practices for Oracle 19c Database, where it was found that increasing the size of the Oracle redo logs can improve database performance12. However, it's important to note that not every workload will show significant performance increase when increasing the size of the redo logs. Customers should evaluate the AWR to determine if the redo logs have an associated high number and duration of wait times. If the redo logs show a possible bottleneck, then increasing the size of the redo logs could improve performance2.


by Werner at Aug 12, 2025, 09:03 PM

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Phyliss
3 days ago
I think the block size should be 8 kB, but I'm not entirely sure if that's the standard for preventing misalignment.
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Octavio
9 days ago
This seems straightforward. The redo log block size needs to be aligned with the storage to prevent read-modify-write problems. I'm pretty confident 16 kB is the right answer here.
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Jesusita
14 days ago
Based on my understanding, the redo log block size should be set to a value that matches the underlying storage's block size to avoid any potential issues. I'm leaning towards 8 kB, but I'll double-check my reasoning.
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Edda
20 days ago
I'm a bit confused on this one. What exactly are the implications of misaligned redo log entries? I'll need to review my notes to make sure I understand the concept fully.
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Devora
25 days ago
Okay, I remember learning about redo logs in class. I think the key here is to choose a block size that aligns with the underlying storage to prevent misalignment issues.
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Rosann
1 months ago
Hmm, this seems like a tricky one. I'll need to think carefully about the relationship between redo log block size and read-modify-write operations.
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Gertude
1 months ago
But wouldn't a smaller block size like 4 kB be more efficient for read-modify-write operations?
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Dorsey
3 months ago
I'm going with 8 kB. It's a nice, even size and should work well for most Oracle databases.
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Jesusita
1 months ago
I think 8 kB is a good choice too.
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Timothy
3 months ago
I disagree, I believe it should be set to 16 kB to prevent misalignment.
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Domingo
3 months ago
Hmm, I think the redo log block size should be set to 16 kB. It's the largest option and should prevent alignment issues, right?
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Chery
1 months ago
I think the redo log block size should be set to 16 kB.
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Gertude
3 months ago
I think the Oracle Redo Log block size should be set to 8 kB.
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