I have a Tomcat7 server running and it crashes and shows sometimes a memory warning that there is not enough Heap Space.
What do I have to do here?
My server has 4GB RAM, 4CPU and runs on ubuntu 12.04 LTS 64-Bit
I am new with Tomcat so I will be thankful for help.
I want to use tomcat in production here is what I have changed:
web.xml
<servlet>
<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>fork</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>xpoweredBy</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>development</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>reloading</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>genStringAsCharArray</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>modificationTestInterval</param-name>
<param-value>40</param-value>
</init-param>
<init-param>
<param-name>trimSpaces</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>
server.xml
<Connector port="8080"
protocol="org.apache.coyote.http11.Http11AprProtocol"
connectionTimeout="3000"
redirectPort="8443"
URIEncoding="UTF-8"
maxPostSize="0"
maxThreads="100"
enableLookups="false"
disableUploadTimeout="false"
maxKeepAliveRequests="-1"
useBodyEncodingForURI="true"
compression="on"
compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain"
/>
setenv.sh
export LD_LIBRARY_PATH='$LD_LIBRARY_PATH:/usr/local/apr/lib'
CATALINA_OPTS="
-server
-Xss1G
-Xms2G
-Xmx2G
-XX:+UseConcMarkSweepGC
-XX:NewSize=1G
-XX:+UseParNewGC
-Djava.awt.headless=true
-Dfile.encoding=UTF-8
-XX:MaxNewSize=1G
-XX:PermSize=1G
-XX:MaxPermSize=1G
-XX:+DisableExplicitGC
-XX:SurvivorRatio=128
-XX:MaxTenuringThreshold=0
-XX:+UseTLAB
-XX:+CMSClassUnloadingEnabled
-XX:+CMSIncrementalMode
-XX:-UseGCOverheadLimit
-XX:+ExplicitGCInvokesConcurrent
-Dorg.apache.jasper.runtime.JspFactoryImpl.USE_POOL=true
-Dcom.sun.management.jmxremote
-Dcom.sun.management.jmxremote.port=8999
-Dcom.sun.management.jmxremote.ssl=false
-Dcom.sun.management.jmxremote.authenticate=true
-Djava.rmi.server.hostname=localhost
-Dcom.sun.management.jmxremote.password.file=/home/grails/apache-tomcat/conf/jmxremote.password
-Dcom.sun.management.jmxremote.access.file=/home/grails/apache-tomcat/conf/jmxremote.access";
export CATALINA_OPTS;