Practice Test Geeks1Z0-082 - Oracle Database Administration I Practice Test
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Performance Management Flashcards

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  1. Which Oracle feature is primarily used for monitoring database performance in real-time?

    Answer: Automatic Workload Repository (AWR)

    The Automatic Workload Repository (AWR) is an Oracle feature that automatically collects, processes, and maintains performance statistics for problem detection and self-tuning. It captures snapshots of database performance metrics at regular intervals, providing a historical record that can be analyzed to identify performance bottlenecks and trends. AWR is crucial for proactive performance management and diagnostics.

  2. What is the primary purpose of the Oracle Optimizer?

    Answer: To generate the most efficient execution plan for a SQL query

    The Oracle Optimizer is a critical component that determines the most efficient way to execute a SQL statement. It analyzes various factors, such as table statistics, indexes, and available resources, to choose the optimal execution plan. Its primary purpose is to minimize resource consumption and maximize query performance, ensuring fast data retrieval.

  3. Which Oracle tool is used to capture and analyze SQL execution plans?

    Answer: SQL Trace and TKPROF

    SQL Trace and TKPROF are classic Oracle tools used together to capture and analyze SQL execution plans and performance statistics. SQL Trace collects detailed performance information for SQL statements, while TKPROF is a utility that formats the raw trace file into a readable report. This combination helps database administrators identify inefficient SQL queries and optimize them.

  4. What does the STATSPACK utility do in Oracle Database?

    Answer: Gathers performance data at regular intervals for trend analysis

    STATSPACK is an Oracle utility that gathers performance data at regular intervals and stores it in the database. It collects a wide range of statistics, including wait events, SQL statistics, and resource usage, allowing administrators to analyze performance trends over time. While largely superseded by AWR in newer versions, it was a key tool for performance diagnostics and capacity planning.

  5. Which Oracle feature provides automatic detection and correction of performance issues?

    Answer: Automatic Database Diagnostic Monitor (ADDM)

    The Automatic Database Diagnostic Monitor (ADDM) is an Oracle feature that automatically analyzes AWR data to identify the root causes of performance problems and recommend solutions. It runs after each AWR snapshot, providing proactive advice on how to improve database performance. ADDM helps database administrators quickly diagnose and resolve performance bottlenecks without manual intervention.