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From Mark Thomas <ma...@apache.org>
Subject Re: How to increase the tomcat heap memory
Date Tue, 30 Dec 2008 10:53:33 GMT
ext-narsi.reddy@nokia.com wrote:
>               Basically  im running  jmeter  with 30 threads with 3
> requests with tomcat 6.0.18 , but tomcat is giving the Out of memory
> error , 
That sounds like you have a memory leak in your application.

>  I want to increase Heap memory of tomcat , I tried  somany ways  but
> it did not worked for me , it is  almost  1 week  for me ,
What did you try?

> can somebody  pls help me how to increase the heap memory of tomcat
> 6.0.18

Operating system?

Just set CATALINA_OPTS=-Xmx1024m (or whatever you want to set) in
setenv.bat/setenv.sh as appropriate for your OS.

and how can I check whether the memory is incresed or not ???
Many ways. JConsole is one.

Mark

> 
> 
> Here is sever error  code ,  
> 
> Dec 30, 2008 3:54:18 PM org.apache.catalina.core.StandardWrapperValve
> invoke
> SEVERE: Servlet.service() for servlet WebAPI threw exception
> java.lang.OutOfMemoryError: Java heap space
> 	at java.util.Arrays.copyOf(Arrays.java:2882)
> 	at
> java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.jav
> a:100)
> 	at
> java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:390)
> 	at java.lang.StringBuilder.append(StringBuilder.java:119)
> 	at
> com.nokia.buddyradar.parser.LocationXMLCreator.xmlToByteArray(LocationXM
> LCreator.java:189)
> 	at
> com.nokia.buddyradar.webapi.WebApiServlet.convertXml(WebApiServlet.java:
> 154)
> 	at
> com.nokia.buddyradar.webapi.WebApiServlet.doGet(WebApiServlet.java:109)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
> 	at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
> tionFilterChain.java:290)
> 	at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
> erChain.java:206)
> 	at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
> e.java:233)
> 	at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
> e.java:191)
> 	at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
> :128)
> 	at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
> :102)
> 	at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
> java:109)
> 	at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:2
> 86)
> 	at
> org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.j
> ava:857)
> 	at
> org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.proce
> ss(Http11AprProtocol.java:565)
> 	at
> org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1509)
> 	at java.lang.Thread.run(Thread.java:619)
> Dec 30, 2008 3:54:18 PM org.apache.catalina.core.StandardWrapperValve
> invoke
> SEVERE: Servlet.service() for servlet WebAPI threw exception
> java.lang.OutOfMemoryError: Java heap space
> 	at java.util.Arrays.copyOf(Arrays.java:2786)
> 	at
> java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:94)
> 	at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:202)
> 	at sun.nio.cs.StreamEncoder.implWrite(StreamEncoder.java:263)
> 	at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:106)
> 	at java.io.OutputStreamWriter.write(OutputStreamWriter.java:190)
> 	at java.io.BufferedWriter.flushBuffer(BufferedWriter.java:111)
> 	at java.io.BufferedWriter.write(BufferedWriter.java:212)
> 	at java.io.Writer.write(Writer.java:140)
> 	at
> org.dom4j.io.XMLWriter.writeEscapeAttributeEntities(XMLWriter.java:1720)
> 	at org.dom4j.io.XMLWriter.writeAttributes(XMLWriter.java:1489)
> 	at org.dom4j.io.XMLWriter.writeElement(XMLWriter.java:937)
> 	at org.dom4j.io.XMLWriter.writeNode(XMLWriter.java:1301)
> 	at
> org.dom4j.io.XMLWriter.writeElementContent(XMLWriter.java:1086)
> 	at org.dom4j.io.XMLWriter.writeElement(XMLWriter.java:954)
> 	at org.dom4j.io.XMLWriter.writeNode(XMLWriter.java:1301)
> 	at org.dom4j.io.XMLWriter.write(XMLWriter.java:344)
> 	at
> com.nokia.buddyradar.parser.LocationXMLCreator.xmlToByteArray(LocationXM
> LCreator.java:186)
> 	at
> com.nokia.buddyradar.webapi.WebApiServlet.convertXml(WebApiServlet.java:
> 154)
> 	at
> com.nokia.buddyradar.webapi.WebApiServlet.doGet(WebApiServlet.java:109)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
> 	at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
> tionFilterChain.java:290)
> 	at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
> erChain.java:206)
> 	at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
> e.java:233)
> 	at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
> e.java:191)
> 	at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
> :128)
> 	at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
> :102)
> 	at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
> java:109)
> 	at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:2
> 86)
> 	at
> org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.j
> ava:857)
> 	at
> org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.proce
> ss(Http11AprProtocol.java:565)
>  im in users block of readxml 
> datasource connection
> jdbc:mysql://localhost:3306/extravert?autoReconnect=true,
> UserName=root@localhost, MySQL-AB JDBC Driver
> datasource connection
> jdbc:mysql://localhost:3306/extravert?autoReconnect=true,
> UserName=root@localhost, MySQL-AB JDBC Driver
>  inserted in to location
> tablejdbc:mysql://localhost:3306/extravert?autoReconnect=true,
> UserName=root@localhost, MySQL-AB JDBC Driver
> datasource connection
> jdbc:mysql://localhost:3306/extravert?autoReconnect=true,
> UserName=root@localhost, MySQL-AB JDBC Driver
> 
> 
> 
> Thanks and Regards 
> 
> Narsi Reddy CH 
> 



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