"ERROR: SGA memory leak detected" message in alert.log on database shutdown
(Doc ID 1319253.1)
Last updated on FEBRUARY 19, 2019
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 to 22.214.171.124 [Release 11.1 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.
On shutdown of the database you see that a System State dump is triggered AFTER the database has successfully Completed its Close:
NOTE: Deferred communication with ASM instance
NOTE: deferred map free for map id 4
Completed: ALTER DATABASE CLOSE NORMAL
Thu Apr 28 01:25:55 2011
freeing rdom 0
System State dumped to trace file /<diagnostic_dest>/diag/rdbms/<dbname>/<instname>/trace/<sid>_ora_21230.trc
ERROR: SGA memory leak detected
You may also see ora-4031 errors or shared pool usage increases due to kglhd allocations.
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