6 Analyze Issue Root Cause

Autonomous Health Framework Scope (AHF Scope) is a standalone, interactive, real-time capable front-end to Cluster Health Advisor (CHA). AHF Scope requires a very small foot-print on the monitored system.

Note:

The Autonomous Health Framework Scope (AHF Scope) feature of Cluster Health Advisor (CHA) is deprecated in Oracle Database 23ai.

To better align with evolving customer needs, Oracle is discontinuing AHF Scope and recommends using Autonomous Health Framework Insights (AHF Insights) as the replacement.

When AHF detects issues such as node evictions, instance evictions, or database performance degradation, it provides a comprehensive report through AHF Insights—highlighting the problem, identifying the root cause, and offering recommended actions.

Additionally, the Database Anomalies Advisor presents a timeline view of anomalies across hosts and database instances. Users can drill down into each finding to understand the underlying cause and suggested resolution.

CHA continuously monitors cluster nodes and Oracle RAC databases for performance and availability issue precursors to provide early warning of problems before they become critical.

Note:

GIMR is optionally supported in Oracle Database 19c. However, it's desupported in Oracle Database 23ai. For more information, see Removing Grid Infrastructure Management Repository.
  • Introduction to AHF Scope
    AHF Scope is a standalone, interactive, real-time capable front-end to Oracle Cluster Health Advisor (CHA). AHF Scope requires a very small foot-print on the monitored system.
  • Cluster View: Connecting and Basics of Monitoring
    Start AHF Scope using the script ahfscope on Linux/UNIX or ahfscope.bat on Microsoft Windows. This script is located in the /opt/oracle.ahf/ahfscope/bin/ directory.
  • Expert Mode
    Expert mode facilitates an advanced analysis of the metrics and their observed values against the predicted ones.
  • Live and Passive Sessions
    AHF Scope maintains two separate sessions in parallel, Live Session (Primary) to receive current metrics in real-time and Past (Replay) Session to display statically a situation encountered at an earlier time.
  • ahfscope Console Commands
    Use the ahfscope -i command option to activate an interactive command-line interface (CLI). Enter a question mark (?) to see the list of available commands.
  • List of Hot Keys
    Hot Keys are keyboard shortcuts that provide an alternate way to do something you would typically do with a mouse.
  • Set of Persistent Settings
    Review the list of persistent settings that you can reuse.
  • Accessibility Aspects
    AHF Scope can be used without the help of the mouse.
  • Customizing Java Run Time System
    As AHF Scope is written in Java, it is platform independent.
  • Setting Proper Character Encoding Page on Microsoft Windows
    Specify the encoding to interpret the characters dispalyed on the HTML page correctly.
  • ahfscope
    Use the ahfscope command to manage AHF Scope.