Oracle Exam 1Z0-888 Topic 8 Question 96 Discussion

Actual exam question for Oracle's 1Z0-888 exam

Question #: 96
Topic #: 8

You are receiving complaints from your application administrators that they are seeing periodic stalls in database response (no queries to any table are returning results for several seconds or longer). You monitor your system and notice that the durations of those stalls correspond to peaks in disk I/O.

Which 2 things should you investigate?

ACheck the rate of change in the status value Aborted_connects and compare to the rate of change in Connections.

BCheck the difference between the InnoDB status values ''Log Sequence number'' and ''Last Checkpoint'' positions then compare that to the total size of the redo log.

CCheck the rate of change in the status value Select_scan and compare to the rate of change in Com_select.

DCheck the difference between the InooDB status values ''Trx id counter'' and ''Purge done for'' and compare to the state substatus of the main ''Main thread''

ECheck the rate of change in the statis value Qcache_hits and compare that to the rate of change of Qcache_not_cached.

Show Suggested Answer

Suggested Answer: B, E

by Isadora at Jul 06, 2024, 03:03 AM

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Merilyn

4 months ago

Option E is definitely worth a look. If the cache is not being utilized effectively, that could be causing a lot of unnecessary disk activity.

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Beatriz

3 months ago

Maryann: Agreed. Let's prioritize looking into option E.

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Tabetha

3 months ago

We should definitely investigate that further to improve database performance.

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Rex

3 months ago

Let's prioritize investigating the cache utilization to see if that's the root cause of the disk I/O peaks.

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Raymon

3 months ago

Agreed. Checking the rate of change in Qcache_hits compared to Qcache_not_cached could give us some insights.

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Maryann

4 months ago

Good idea. If the cache isn't working well, it could be causing the disk stalls.

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Barney

4 months ago

Option E is a good point. If the cache is not working efficiently, it could be causing the disk stalls.

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Sharika

4 months ago

Let's check the rate of change in Qcache_hits and compare it to Qcache_not_cached.

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Mitzie

4 months ago

I'm not sure, maybe we should also look into option E.

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Joesph

5 months ago

Haha, I bet the database admins are just taking a coffee break and blaming the system. But in all seriousness, Option C looks like it could be a good starting point.

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Jacquelyne

4 months ago

Agreed. That could give us some insight into what's causing the stalls.

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Shawnee

4 months ago

Good idea. We should investigate the rate of change in Select_scan and compare it to Com_select.

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Daisy

4 months ago

Yeah, those admins always blame the system first. Let's check option C.

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Shonda

5 months ago

I'm leaning towards Option D. Tracking the difference between the transaction ID counter and the purge status could help us identify any potential issues with the InnoDB purge process.

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Alishia

4 months ago

Agreed. We should also keep an eye on the main thread substatus to see if that provides any additional insights.

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Angella

4 months ago

Option D seems like a good starting point. Let's investigate the InnoDB status values for any anomalies.

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Anisha

5 months ago

I agree with Marvel, checking the InnoDB status values could help.

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Vicente

5 months ago

Option B seems like the way to go. Checking the redo log size and comparing it to the difference in log sequence numbers could give us some valuable insights into the disk I/O issues.

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