Oracle 1Z0-076 Exam - Topic 8 Question 20 Discussion

Actual exam question for Oracle's 1Z0-076 exam

Question #: 20
Topic #: 8

[All 1Z0-076 Questions]

Which two are prerequisites for configuring flashback database for Oracle 19c databases, in a Data Guard environment?

AA far sync instance must be configured to flash back a standby when the primary has been flashed back.

BA fast recovery area must be configured.

CThe database must be in ARCHTVELOG mode.

DThe Data Guard real-time apply feature must be enabled.

EThe data guard broker must be used.

Show Suggested Answer

Suggested Answer: A, D, E

Global Sequences are Oracle sequences that generate unique values across multiple instances in an Oracle RAC or a Data Guard configuration. Regarding their behavior and performance when connected to a physical standby database with Real-Time Query enabled:

A: The usage of Global Sequences can indeed have a performance impact on the primary database due to the need to generate unique values that are consistent across both primary and standby databases.

D: The performance impact on the physical standby database may occur if the CACHE size is too small. This is because the standby database will frequently have to access the primary database to replenish the cache, which can increase the load and potentially lead to performance degradation.

E: Global Sequences should have the NOORDER and CACHE options set. The NOORDER option ensures that sequence numbers are provided without guaranteeing sequence order, thus improving scalability and performance. The CACHE option is used to specify how many sequence values will be held in memory for faster access.

Option B is incorrect as the LOG_ARCHIVE_DEST_n parameter's definition for standbys pointing back to the primary does not directly pertain to the creation of sequences.

Option C is incorrect because there is no requirement that the size of the cache for a sequence must be at least 100. The CACHE size can be set to a different number based on specific use cases or performance considerations.

by Benton at Sep 16, 2024, 09:58 PM

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Jonelle

5 months ago

I thought you could flashback without a fast recovery area.

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Dorethea

5 months ago

The Data Guard broker is essential too, right?

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Lisha

5 months ago

Wait, do you really need a far sync instance for flashback?

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Felicitas

6 months ago

Totally agree, ARCHIVELOG mode is a must!

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Joanna

6 months ago

A fast recovery area must be configured.

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Elouise

6 months ago

I’m leaning towards B and C as the correct answers, but I have a nagging feeling about the real-time apply feature too.

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Alverta

6 months ago

I believe both A and D are related to flashback configurations, but I’m a bit uncertain if A is strictly necessary.

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Catalina

6 months ago

I remember practicing a question similar to this, and I feel like the Data Guard broker is important, but I can't recall if it's mandatory for flashback.

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Abel

7 months ago

I think option C about ARCHIVELOG mode is definitely a prerequisite, but I'm not sure about the fast recovery area.

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Erinn

7 months ago

This is a good test of my Oracle Data Guard knowledge. I'm pretty confident the correct prerequisites are a fast recovery area (option B) and the database being in ARCHIVELOG mode (option C). The other options seem like they may be helpful but not strictly required.

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Tamra

7 months ago

I'm a little confused by the mention of a "far sync instance" in option A. I don't recall learning about that in my studies. I'll need to research that concept a bit more before deciding on the answer.

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Maile

7 months ago

Okay, I think I've got this. The key prerequisites are a fast recovery area and the database being in ARCHIVELOG mode. The other options seem like nice-to-haves but not strictly required. I'll mark B and C as my answer.

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Anabel

7 months ago

Hmm, I'm a bit unsure about this one. The options mention things like far sync instances, fast recovery areas, and Data Guard broker. I'll need to make sure I understand how these components work together for flashback database.

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Graciela

7 months ago

This looks like a tricky question on Oracle database configuration. I'll need to carefully review the options and think through the prerequisites for flashback database in a Data Guard environment.

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Ronny

7 months ago

Oof, this is a tricky one. I'm not super familiar with all the Google Cloud monitoring tools, so I'll need to do some quick research to understand the differences between the options before I can make a confident decision.

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Annett

12 months ago

Aha, I got this! The correct prerequisites are B and C. A fast recovery area and ARCHIVELOG mode. The other options are just distractions.

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Aja

10 months ago

I agree with you, the fast recovery area and ARCHIVELOG mode are definitely the prerequisites for configuring flashback database in a Data Guard environment.

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Pansy

11 months ago

I think you're mistaken. The correct prerequisites are actually B and D. A fast recovery area and enabling Data Guard real-time apply feature.

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Melda

11 months ago

Yes, you're right! A fast recovery area and ARCHIVELOG mode are the prerequisites.

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Mitsue

12 months ago

Wait, what? Flashback and Data Guard? I thought this was about configuring a backup generator. *scratches head* Guess I should have read the question more carefully.

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Carisa

11 months ago

C) The database must be in ARCHTVELOG mode.

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Jesus

11 months ago

B) A fast recovery area must be configured.

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Charlene

11 months ago

A) A far sync instance must be configured to flash back a standby when the primary has been flashed back.

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Alberta

1 year ago

Ha! This question is a trap. The answer is clearly B and E. Who needs a fast recovery area or ARCHIVELOG mode when you have the all-powerful Data Guard broker? *chuckles*

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Felicidad

11 months ago

True, having both the fast recovery area and the Data Guard broker is crucial for configuring flashback database in a Data Guard environment.

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Malika

11 months ago

But don't forget about the fast recovery area, it's also a prerequisite for Oracle 19c databases.

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Tashia

11 months ago

I think you're right, the Data Guard broker is essential for configuring flashback database.

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Lorrie

1 year ago

I'm pretty sure E is also required. The Data Guard broker needs to be enabled to configure flashback in a Data Guard environment.

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Ty

11 months ago

So, both A and E are prerequisites for configuring flashback in Oracle 19c databases.

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Bernardine

12 months ago

And E is required because the Data Guard broker must be used for configuring flashback.

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Polly

12 months ago

Yes, A is necessary to flash back a standby when the primary has been flashed back.

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Audry

12 months ago

I think A and E are both needed for configuring flashback in a Data Guard environment.

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Delila

1 year ago

Exactly, Keith. It's important to have these prerequisites in place to ensure a smooth flashback database configuration in Oracle 19c.

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Ty

1 year ago

I think B and C are the prerequisites. A fast recovery area is a must, and the database has to be in ARCHIVELOG mode for flashback to work.

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Fabiola

12 months ago

User 2

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Anjelica

12 months ago

User 1

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Keith

1 year ago

I agree with you, Delila. The fast recovery area is needed for storing flashback logs, and the real-time apply feature ensures that changes are applied immediately to the standby database.

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Delila

1 year ago

I think the prerequisites for configuring flashback database in a Data Guard environment are having a fast recovery area and enabling the Data Guard real-time apply feature.

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