Oracle Exam 1Z0-434 Topic 10 Question 44 Discussion

Actual exam question for Oracle's 1Z0-434 exam

Question #: 44
Topic #: 10

A user has configured Mediator M1 to receive and route product information from System X into its internal applications in chronological order. For each product, M1 receives one ''create'' event followed by any number of ''update '' events from an AQ Queue via a JMS adapter. M1 can receive updates to the product at any time of day.

The user claims that incoming messages for each product are received and processed in the correct chronological order 95 % of the time. However, the messages are being processed out of order 5 % of the time. This results in critical errors in the target systems. The user expects all messages pertaining to a product to be unconditionally processed in the order of arrival at M1.

What causes this discrepancy?

AThe user is running on a four-node SOA cluster and has not configured the inbound JMC adapter to be a singleton.

BThe user is running on a single-node SOA environment but has configured the number of inbound adapter threads to be a value greater than 1.

CThe given Mediator configuration does not address this sequencing requirement.

DThe user has configured resequencer worker threads to a value greater than 1 for the Mediator service engine.

Show Suggested Answer

Suggested Answer: A, D

by Xuan at Sep 19, 2022, 12:08 PM

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Leota

2 months ago

This question is a real brain-teaser! I think the correct answer is C. The given Mediator configuration does not address the sequencing requirement, and that's why the messages are being processed out of order. Oh, and by the way, I hear the exam proctor likes to tell 'time flies like an arrow, but fruit flies like a banana' jokes. Good luck, everyone!

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Estrella

28 days ago

I've had issues with message sequencing before, so it's crucial to double-check the configuration to avoid errors in the target systems.

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Cecily

29 days ago

Yeah, I agree. It's important to ensure that the Mediator configuration is set up properly to maintain the correct order of messages.

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Carmen

30 days ago

I think the correct answer is C. The given Mediator configuration does not address the sequencing requirement, and that's why the messages are being processed out of order.

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Alishia

2 months ago

Hmm, this is a tricky one. I'd say the answer is B. The user is running on a single-node SOA environment but has configured the number of inbound adapter threads to be a value greater than 1, which could cause the out-of-order processing.

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Cassie

15 days ago

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Alisha

19 days ago

B) The user is running on a single-node SOA environment but has configured the number of inbound adapter threads to be a value greater than 1.

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Jaclyn

2 months ago

A) The user is running on a four-node SOA cluster and has not configured the inbound JMC adapter to be a singleton.

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Carlton

3 months ago

I'm leaning towards option D. The user has configured the resequencer worker threads to a value greater than 1 for the Mediator service engine, which could lead to the messages being processed out of order.

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Larue

2 months ago

I agree, having multiple resequencer worker threads could definitely lead to messages being processed out of order.

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Tricia

2 months ago

Option D seems like the most likely cause of the issue.

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Justa

3 months ago

I think the correct answer is C. The given Mediator configuration does not address the sequencing requirement. The question mentions that the user expects all messages pertaining to a product to be unconditionally processed in the order of arrival, but the Mediator configuration provided does not seem to handle this requirement.

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