REAL-TIME ADDM ANALYSIS

ONLINE RENAME AND RELOCATION OF AN ACTIVE DATA FILE, AskHareesh.blogspot.com
REAL-TIME ADDM ANALYSIS
Analyzing past and current database health statuses through a set of automatic diagnostic tools such as AWR, ASH and ADDM is part of every DBAs life. Though each individual tool can be used at various levels to measure the database’s overall heath and performance, no tool can be used when the database is unresponsive or totally hung.
When you encounter an unresponsive database or hung state, and if you have configured Oracle Enterprise Manager 12c Cloud Control, you can diagnose serious performance issues. This would give you a good picture about what’s currently going on in the database, and might also provide a remedy to resolve the issue.
The following step-by-step procedure demonstrates how to analyze the situation on the Oracle EM 12c Cloud Control :
  1. Select the Emergency Monitoring option from the Performance menu on the Access the Database Home page.This will show the top blocking sessions in the Hang Analysis table.
  2. Select the Real-Time ADDM option from the Performance to perform Real-time ADDM analysis.
  3. After collecting the performance data, click on the Findings tab to get the interactive summary of all the findings.
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