OHS not starting due to outofmemory error

 Error : 

OHS failing on linux

<DATE> <SEVERE> <Plugin threw out unexpected exception java.lang.OutOfMemoryError from method oracle.ohs.plugin.nodemanager.OhsProcessManagementPlugin$ProcessImpl.start(Properties props). This is very likely a BUG in plugin implementation and may lead to unexpected behavior. The legal exception allowed from this method is java.io.IOException. The unexpected exception is: java.lang.OutOfMemoryError: GC overhead limit exceeded>
java.lang.OutOfMemoryError: GC overhead limit exceeded
        at java.util.Arrays.copyOfRange(Arrays.java:3664)
        at java.lang.String.<init>(String.java:207)
        at java.lang.StringBuilder.toString(StringBuilder.java:413)
        at oracle.ohs.plugin.nodemanager.OhsSyncConfig.addConfigTree(Unknown Source)

 

Solution:

 stop nodemanger

edit  startNodeManager.sh

add  USER_MEM_ARGS

example below 

 

JAVA_OPTIONS="${JAVA_OPTIONS} -Dweblogic.RootDirectory=${DOMAIN_HOME} "
export JAVA_OPTIONS
USER_MEM_ARGS="-Xms2048m -Xmx2048m -XX:MaxMetaspaceSize=512m"
export USER_MEM_ARGS
#  Set JAVA_HOME for node manager 

 

save the file.

set USER_MEM_ARGS=-Xms2048m -Xmx2048m 

start the nodemanager 

start ohs 

Unable to start Elasticsearch

 Error: 

[2026-06-05T02:31:27,577][WARN ][o.e.b.Natives] unable to load JNA native support library, native methods will be disabled.java.lang.UnsatisfiedLinkError: /home/**/.cache/JNA/temp/jna10229199309993491088.tmp: 
/***/.cache/JNA/temp/jna10229199309993491088.tmp: failed to map segment from shared object

 

Solution:

create a new folder and provide full permission and ownership

run below commands line by line before starting elasticsearch

export ES_JAVA_OPTS="$ES_JAVA_OPTS -Djava.io.tmpdir=/***/tmp"
export ES_TMPDIR=/***/tmp
export ES_JAVA_OPTS="-Djna.tmpdir=/***/tmp"

bin/elasticsearch -d -p elasticsearch.pid