Oracle 1Z0-084 Exam - Topic 8 Question 14 Discussion

Actual exam question for Oracle's 1Z0-084 exam

Question #: 14
Topic #: 8

[All 1Z0-084 Questions]

Accessing the SALES tables causes excessive db file sequential read wait events.

Examine this AWR except:

Now, examine these attributes displayed by querying dba_tables:

Finally, examine these parameter settings:

Which two must both be used to reduce these excessive waits?

APartition the SALES table.

BIncrease PCTFREE for the SALES table.

CRe-create the SALES table.

DCompress the SALES table.

ECoalesce all sales table indexes.

Show Suggested Answer

Suggested Answer: A, E, F

Statspack is a performance diagnostic tool provided by Oracle prior to the introduction of the Automatic Workload Repository (AWR). At snap level 6, Statspack captures the following types of statistics:

A (Correct): Parent and child latches are captured. Latch statistics provide information about contention for latches, which are low-level serialization mechanisms used by Oracle.

E (Correct): Enqueue statistics, which provide information on the waits for locks that manage the concurrency between users.

F (Correct): Segment-level statistics, which provide detailed information on database segments such as tables, indexes, etc., to identify I/O and contention issues.

C (Incorrect): While optimizer execution plans are an essential aspect of performance tuning, detailed execution plan capture is not part of the Statspack report at level 6.

D (Incorrect): Plan usage data refers to how frequently a plan is being used, which is more associated with AWR and not typically captured in Statspack reports.

Oracle Database Performance Tuning Guide: Using Statspack

by Fernanda at Jul 08, 2024, 08:53 AM

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Tabetha

5 months ago

Wait, compressing the table? Really? That sounds counterintuitive!

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Chi

5 months ago

Coalescing indexes might not be enough on its own.

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Vilma

5 months ago

Not sure about re-creating the table, seems risky.

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Stefanie

5 months ago

I think increasing PCTFREE is a good idea too!

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Lettie

6 months ago

Partitioning the SALES table can really help with those waits.

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Noel

6 months ago

Coalescing indexes sounds familiar; I feel like it might reduce the waits, but I need to double-check if it applies to this scenario.

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Kris

6 months ago

Re-creating the SALES table seems drastic, but I practiced a similar question where it was suggested for performance issues.

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Leonard

6 months ago

I think increasing PCTFREE could help with space management, but I can't recall if it directly affects wait events.

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Mozell

6 months ago

I remember something about partitioning tables to improve performance, but I'm not sure if it's the best option here.

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Devorah

6 months ago

Hmm, re-creating the SALES table or compressing it could also be viable options, but I'll need to think through the potential implications of those approaches as well.

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Lina

6 months ago

I'm a bit confused by the parameter settings. I'll need to make sure I understand how those settings might be impacting the performance issues before deciding on a solution.

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Jerrod

6 months ago

Okay, let's see here. The SALES table is causing excessive db file sequential read wait events, and the table attributes and parameter settings are given. I'll need to analyze those details to determine the best approach.

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Dulce

6 months ago

Hmm, this looks like a tricky one. I'll need to carefully examine the provided information and think through the potential solutions.

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Heike

7 months ago

Partitioning the SALES table and increasing the PCTFREE seem like good options to consider based on the information provided. I'll need to weigh the pros and cons of each approach.

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Dan

7 months ago

Hmm, this one seems pretty straightforward. I think the format block could be used to generate HTML or CSS content for output, like in emails or user prompts.

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