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Oracle Exam 1Z0-134 Topic 10 Question 102 Discussion

Actual exam question for Oracle's 1Z0-134 exam
Question #: 102
Topic #: 10
[All 1Z0-134 Questions]

Your application includes a message driven bean (MDB) that is listening to messages on a JMS Queue. You need to ensure that every message is processed exactly once by the MDB.

Which configuration allows you to achieve this requirement? (Choose the best answer.)

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Suggested Answer: C

by Arlean at Sep 16, 2024, 01:13 AM

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King
2 months ago
I'm not sure, but setting the MDB instance count to 1 could also work to process messages exactly once.
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Nicholle
2 months ago
Hmm, this is a tricky one. I'm going to have to go with C. Can't wait to see what the instructor thinks is the 'best' answer. Maybe they'll throw in a trick question just to keep us on our toes!
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Cherelle
2 months ago
A is not the right answer. An exception handler doesn't ensure that messages are processed exactly once, it just gives you a way to handle errors.
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Arlie
1 months ago
D) Set the MDB instance count to 1 in the deployment descriptor.
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Dominque
1 months ago
C) Use container-managed transactions, so that messages are redelivered if unacknowledged.
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Latanya
2 months ago
B) Set the Redelivery Limit for the Queue to zero.
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Denny
2 months ago
D seems like an odd choice. Setting the instance count to 1 doesn't guarantee that messages are processed exactly once, it just limits the parallelism.
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Renea
2 months ago
I'm not sure about C. Maybe B could work by setting the Redelivery Limit for the Queue to zero?
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Renea
2 months ago
I agree, C is the way to go. It's important to make sure every message is processed exactly once.
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Renea
2 months ago
I think C is the best option. Using container-managed transactions ensures messages are redelivered if unacknowledged.
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Arlette
3 months ago
I agree with Aleisha, using container-managed transactions ensures messages are redelivered if unacknowledged.
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Jolene
3 months ago
I'm not sure about C. Wouldn't setting the redelivery limit to zero (option B) also ensure that every message is processed exactly once?
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Gennie
3 months ago
I think C is the best answer. Using container-managed transactions ensures that messages are redelivered if the processing fails.
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Shelia
2 months ago
That might work too, but C seems like the safer option.
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Tuyet
2 months ago
But what about setting the MDB instance count to 1?
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Dustin
2 months ago
I agree, container-managed transactions ensure message redelivery.
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Mari
2 months ago
I think C is the best answer.
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Aleisha
3 months ago
I think the best answer is C) Use container-managed transactions.
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