100% CPU Used When Memory Advisor tab in Enterprise Manager is Selected
(Doc ID 1321123.1)
Last updated on OCTOBER 23, 2019
Applies to:Oracle Database - Enterprise Edition - Version 10.1.0.2 to 18.104.22.168.0 [Release 10.1 to 11.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.
The query executed when the Memory Advisor Tab is selected is:-
SELECT component ,
WHERE initial_size <> final_size
ORDER BY end_time;
When the same query is run from SQLPLUS it takes lot of time to execute and the process will take 100% CPU.
From 10g, the default value for OPTIMIZER_MODE parameter is ALL_ROWS
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