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out of memory problem. Help!

out of memory problem. Help!

2004-01-16       - By Christophe Andreoli

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Reply:     1     2     3     4     5     6     7     8     9     10     >>  



   Hello !

I have a Struts/jsp Application

Ich get an out of memory problem:javax.servlet.ServletException Source code of javax.servlet.ServletException: Servlet
execution threw an exception
       at
org.apache.catalina.core.ApplicationFilterChain Source code of org.apache.catalina.core.ApplicationFilterChain
(ApplicationFilterChain.java:269)
       at
org.apache.catalina.core.ApplicationFilterChain Source code of org.apache.catalina.core.ApplicationFilterChain(ApplicationFilterChain
.java:193)
       at
org.apache.catalina.core.StandardWrapperValve Source code of org.apache.catalina.core.StandardWrapperValve(StandardWrapperValve.java
:243)
       at
org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:566)
       at
org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:472)
       at
org.apache.catalina.core.ContainerBase Source code of org.apache.catalina.core.ContainerBase(ContainerBase.java:943)
       at
org.apache.catalina.core.StandardContextValve Source code of org.apache.catalina.core.StandardContextValve(StandardContextValve.java
:190)
       at
org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:566)
       at
org.apache.catalina.authenticator.AuthenticatorBase Source code of org.apache.catalina.authenticator.AuthenticatorBase(AuthenticatorBase
.java:531)
       at
org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:564)
       at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
       at
org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:564)
       at
org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:472)
       at
org.apache.catalina.core.ContainerBase Source code of org.apache.catalina.core.ContainerBase(ContainerBase.java:943)
       at
org.apache.catalina.core.StandardContext Source code of org.apache.catalina.core.StandardContext(StandardContext.java:2347)
       at
org.apache.catalina.core.StandardHostValve Source code of org.apache.catalina.core.StandardHostValve(StandardHostValve.java:180)
       at
org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:566)
       at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve
.java:170)
       at
org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:564)
       at
org.apache.catalina.valves.ErrorReportValve Source code of org.apache.catalina.valves.ErrorReportValve(ErrorReportValve.java:170)
       at
org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:564)
       at
org.apache.catalina.valves.AccessLogValve Source code of org.apache.catalina.valves.AccessLogValve(AccessLogValve.java:468)
       at
org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:564)
       at
org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:472)
       at
org.apache.catalina.core.ContainerBase Source code of org.apache.catalina.core.ContainerBase(ContainerBase.java:943)
       at
org.apache.catalina.core.StandardEngineValve Source code of org.apache.catalina.core.StandardEngineValve(StandardEngineValve.java
:174)
       at
org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:566)
       at
org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:472)
       at
org.apache.catalina.core.ContainerBase Source code of org.apache.catalina.core.ContainerBase(ContainerBase.java:943)
       at
org.apache.ajp.tomcat4.Ajp13Processor Source code of org.apache.ajp.tomcat4.Ajp13Processor(Ajp13Processor.java:458)
       at
org.apache.ajp.tomcat4.Ajp13Processor Source code of org.apache.ajp.tomcat4.Ajp13Processor(Ajp13Processor.java:551)
       at java.lang.Thread Source code of java.lang.Thread(Thread.java:536)

root cause

java.lang.OutOfMemoryError Source code of java.lang.OutOfMemoryError


It happens When the corresponding request returns more than 20000-30000
rows from the database, not every time

but surely if more request run parallely


>From the 20000-30000 rows I am making  the same number of the following
objects from this class
class{
  public  int   humanId=-1;
  public String humanDescription="";
  public String   swissProtId="";
    public String swissProtName="";
  public String function="";
  public String subcellularLocation ="";
  public String alternativeProtein ="";
    public String  pathway ="";
    public double mitoProt =-1;
  public int mitoLocal=-1;
  private double   accuracy;
  public String swissProtLink="";
  private int   hasEncephalHomolog=-1;
  private int hasRickettsiaHomolog=-1;
  private int hasYeastMitoHomolog=-1;
  private int hasParalogMito=-1;
  private int heartProteome=-1;
  private int psort=-1;
  private String mesClone="";
  private String mesUnigene="";
  private int holgerCandidate=-1;
  private int predotar=-1;
  private String omim="";
  private String subLocWiemann="";


}


Can you help me ?



  Thank you!


 Chris

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