alex408
New member
Automatic Database Diagnostic Monitor (ADDM) is a built-in Oracle Database performance diagnostic tool that automatically analyzes database performance after each Automatic Workload Repository (AWR) snapshot. It examines database activity, identifies performance bottlenecks, and provides recommendations to improve overall system performance. Instead of requiring a database administrator (DBA) to manually review hundreds of performance statistics, ADDM evaluates the collected data and highlights the most significant issues affecting the database. It is one of the primary tools used in Oracle Database 19c Performance Management and Tuning.
For the Oracle 1Z0-084 certification exam question, candidates should understand how ADDM works, its dependency on AWR snapshots, and the types of performance problems it can detect. It is important to know that ADDM provides recommendations rather than making changes automatically. Candidates should also be familiar with viewing ADDM reports using Oracle Enterprise Manager or SQL scripts and understand how ADDM integrates with other Oracle diagnostic tools. Mastering these concepts helps in answering exam questions related to Oracle's automated performance tuning framework.
1. What is the main purpose of ADDM?
ADDM automatically analyzes Oracle Database performance and identifies the root causes of performance problems while providing recommendations for improvement.
2. What data does ADDM use for its analysis?
ADDM uses performance data collected in Automatic Workload Repository (AWR) snapshots.
3. Does ADDM automatically fix performance issues?
No. ADDM only identifies problems and recommends solutions. The DBA decides whether to implement the recommendations.
4. What types of issues can ADDM detect?
It can detect CPU bottlenecks, inefficient SQL statements, memory shortages, I/O contention, locking issues, configuration problems, and resource contention.
5. How often does ADDM perform its analysis?
ADDM runs automatically after each AWR snapshot is created, which is typically every hour by default.
For the Oracle 1Z0-084 certification exam question, candidates should understand how ADDM works, its dependency on AWR snapshots, and the types of performance problems it can detect. It is important to know that ADDM provides recommendations rather than making changes automatically. Candidates should also be familiar with viewing ADDM reports using Oracle Enterprise Manager or SQL scripts and understand how ADDM integrates with other Oracle diagnostic tools. Mastering these concepts helps in answering exam questions related to Oracle's automated performance tuning framework.
1. What is the main purpose of ADDM?
ADDM automatically analyzes Oracle Database performance and identifies the root causes of performance problems while providing recommendations for improvement.
2. What data does ADDM use for its analysis?
ADDM uses performance data collected in Automatic Workload Repository (AWR) snapshots.
3. Does ADDM automatically fix performance issues?
No. ADDM only identifies problems and recommends solutions. The DBA decides whether to implement the recommendations.
4. What types of issues can ADDM detect?
It can detect CPU bottlenecks, inefficient SQL statements, memory shortages, I/O contention, locking issues, configuration problems, and resource contention.
5. How often does ADDM perform its analysis?
ADDM runs automatically after each AWR snapshot is created, which is typically every hour by default.