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1Z0-062 · Question #288

The performance of your database degrades between 11:00 AM and 3:00 PM. Automatic Workload Repository (AWR) snapshots are collected on an hourly basis. What is the most efficient way of diagnosing…

The correct answer is A. Create a custom ADDM task for the period defined by the snapshots taken between 11:00 AM and 3:00. To diagnose a specific performance degradation window efficiently, the best approach is to create a custom ADDM task targeting the AWR snapshots collected during that precise problematic period.

Managing Performance

Question

The performance of your database degrades between 11:00 AM and 3:00 PM. Automatic Workload Repository (AWR) snapshots are collected on an hourly basis. What is the most efficient way of diagnosing this problem?

Options

  • ACreate a custom ADDM task for the period defined by the snapshots taken between 11:00 AM and 3:00
  • BAnalyze the latest Automatic Database Diagnostic Monitor (ADDM) report.
  • CAnalyze the hourly ADDM reports generated between 11:00 AM and 3:00 PM.
  • DCreate a SQL Tuning Set (STS) for the currently cached SQL statements in the shared pool and run

How the community answered

(34 responses)
  • A
    74% (25)
  • B
    18% (6)
  • C
    3% (1)
  • D
    6% (2)

Why each option

To diagnose a specific performance degradation window efficiently, the best approach is to create a custom ADDM task targeting the AWR snapshots collected during that precise problematic period.

ACreate a custom ADDM task for the period defined by the snapshots taken between 11:00 AM and 3:00Correct

Creating a custom ADDM task allows you to specify a particular time range, defined by start and end AWR snapshots, for analysis. This is the most efficient way to diagnose a performance problem that occurs consistently within a specific time window, providing a focused report on that period.

BAnalyze the latest Automatic Database Diagnostic Monitor (ADDM) report.

Analyzing only the latest ADDM report would not necessarily focus on the specific problem period of 11:00 AM to 3:00 PM and might miss the underlying cause.

CAnalyze the hourly ADDM reports generated between 11:00 AM and 3:00 PM.
DCreate a SQL Tuning Set (STS) for the currently cached SQL statements in the shared pool and run

Concept tested: Custom ADDM analysis for specific periods

Source: https://docs.oracle.com/en/database/oracle/oracle-database/19/tgsql/using-automatic-database-diagnostic-monitor.html#GUID-6F27663F-0309-4C51-B245-A7B8E5F690B4

Topics

#performance tuning#ADDM#AWR#diagnostic tools

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