"ERROR: SGA memory leak detected" message in alert.log on database shutdown (Doc ID 1319253.1)

Last updated on NOVEMBER 28, 2016

Applies to:

Oracle Server - Enterprise Edition - Version: 11.1.0.6 to 11.2.0.3 - Release: 11.1 to 11.2
Information in this document applies to any platform.

Symptoms

On shutdown of the database you see that a System State dump is triggered AFTER the database has successfully Completed its Close:

Thu Apr 28 01:25:52 2011
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 /u01/app/oracle/diag/rdbms/test/test/trace/test_ora_21230.trc
ERROR: SGA memory leak detected

You may also see ora-4031 errors or shared pool usage increases due to kglhd allocations.

Cause

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