IBM Tivoli Composite Application Manager for Application Diagnostics, Version 18.104.22.168
Scenario 7: Determine if the Garbage Collection policy needs to be adjusted
Annette, the level 2 operator is monitoring the Tivoli Enterprise Portal. Annette notices a critical symbol on the JVM icon in the Application Server Summary workspace. The flyover for JVM icons shows a high metric for JVM CPU% and GC Active Time (ms).
- Annette double-clicks the JVM icon. The JVM Stack Trend workspace is displayed. The Percent GC Time Used view displays a high value. The heap usage trend is also high.
- Annette uses an external ticketing tool to forward the ticket with details to Jim, the Middleware/Application Support SME.
- Jim reviews the information and determines that the heap size parameters in the JVM are not set correctly. This incorrect setting affects application performance. Jim sets the appropriate GC policy.