EnterpriseDB PostgreSQL-Essentials Exam - Topic 9 Question 8 Discussion

Actual exam question for EnterpriseDB's PostgreSQL-Essentials exam

Question #: 8
Topic #: 9

[All PostgreSQL-Essentials Questions]

In PostgreSQL, what is the default size of a WAL segment file?

A8 MB

B16 MB

C32 MB

D64 MB

Show Suggested Answer

Suggested Answer: B

by Brynn at Jan 05, 2026, 05:16 AM

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German

20 days ago

I remember reading it's 16 MB. Fits well with other settings.

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Gail

26 days ago

I'm pretty sure it's 16 MB too. Makes sense for performance.

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Corrina

1 month ago

I feel like it's 8 MB. Smaller sizes are easier to manage.

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Georgeanna

1 month ago

I think it's 16 MB. Seems standard.

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Sherell

1 month ago

Nope, it's definitely not 64 MB.

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Susana

2 months ago

Wait, really? I always assumed it was 8 MB.

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Lajuana

2 months ago

Totally agree, 16 MB is the standard.

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Rosamond

2 months ago

I thought it was 32 MB, but I guess not.

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Dannie

2 months ago

It's 16 MB by default!

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Dominga

2 months ago

The correct answer is definitely 32 MB. Unless you're running a database for elephants, of course.

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Irma

2 months ago

Hmm, I'm going to go with B) 16 MB. Seems like a more reasonable default size.

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Shantell

3 months ago

D) 64 MB? Really? That seems way too big for a default WAL segment size.

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Keneth

3 months ago

I always get these PostgreSQL questions mixed up. 32 MB sounds about right though.

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Diego

3 months ago

C) 32 MB is the correct answer. That's the default size of a WAL segment file in PostgreSQL.

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Gladys

4 months ago

I thought it was 32 MB, but I can't recall the exact details from my notes.

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Lezlie

4 months ago

I’m leaning towards 64 MB, but I might be mixing it up with something else.

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Rose

4 months ago

I remember practicing a question about WAL files, and I feel like it was 8 MB, but that seems too small now.

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Nadine

4 months ago

I think the default size of a WAL segment file is 16 MB, but I'm not entirely sure.

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Bernadine

4 months ago

Okay, I'm not 100% sure about this, but I think the default WAL segment file size is 32 MB. I'll go with option C.

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Anna

4 months ago

Ah yes, the WAL segment file size. I'm pretty confident the default is 16 MB, so I'll select option B.

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Genevive

5 months ago

Ugh, I'm drawing a blank on this one. I know it has to do with PostgreSQL's write-ahead logging, but I can't recall the specific default size. I'll have to make an educated guess.

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Leatha

5 months ago

I think I remember learning about this in class. Let me think... I believe the default size is 16 MB, so I'll go with option B.

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Denny

5 months ago

Hmm, I'm not too familiar with PostgreSQL's WAL segment file size. I'll need to review my notes on PostgreSQL configuration settings.

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Zoila

15 days ago

I think it's 16 MB.

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