Unable to access the web interfaces and java utilization is high

Document ID : KB000111756
Last Modified Date : 21/08/2018
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Issue:
OneClick and the Web interface are not opening and when I check the server, I see the cpu utilization of Java is high and in turn load average is high.
Environment:
eHealth running on a Linux operating system
Resolution:
The first step is to find out what specific process is being called out in the TOP output:
 
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 
17228 ehealth 20 0 1741m 1.2g 8092 S 1687.4 1.8 10135:48 java 
19975 root 20 0 838m 789m 19m R 52.2 1.2 1818:07 nhiPoller 

In the above example output you can see that the java process has a PID of 17228.  Take this pid and find out what specific process it is:
 
ehealth@hostname# ps -ef | grep 17228
ehealth 17228 1 46 Aug05 ? 7-10:19:44 /ehealth/jre/bin/java -Dnop -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.awt.headless=true -Xmx1024m -Doracle.net.tns_admin=/oracle/network/admin -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -classpath /ehealth/web/tomcat/bin/bootstrap.jar:/ehealth/web/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/ehealth/web/tomcat -Dcatalina.home=/ehealth/web/tomcat -Djava.io.tmpdir=/ehealth/web/tomcat/temp org.apache.catalina.startup.Bootstrap start

If this process is the one that returns then the specific Java process using excess CPU is eHealth's Tomcat.  From here you can restart the service by:

1. nhHttpd stop
2. nhHttpd start