EM 13.4: OMS Is Intermittently Going Down with "java.lang.OutOfMemoryError: Java heap space"
(Doc ID 2911752.1)
Last updated on FEBRUARY 17, 2024
Applies to:
Enterprise Manager Base Platform - Version 13.4.0.0.0 and laterInformation in this document applies to any platform.
Symptoms
EM 13.4 OMS is going down intermittently with error "java.lang.OutOfMemoryError: Java heap space" reporting in OMS logs:
$../gc_inst/em/EMGC_OMS1/sysman/log/emctl.msg file or
$../gc_inst/em/EMGC_OMS1/sysman/log/emoms.trc file.
Collected the heap dump using: jmap -heap <oms pid> > jmap.out
Analysis from the heap dump shows:
concurrent mark-sweep generation:
capacity = 12535988224 (11955.25MB)
used = 12535987872 (11955.24966430664MB)
free = 352 (3.35693359375E-4MB)
99.99999719208415% used
CMS(Concurr-Mark-Sweep) gen is taking up 11+GB out of the 12GB max heap that is set for OMS.
Cause
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In this Document
| Symptoms |
| Cause |
| Solution |
| References |