How to increase my heap size

Question

i got following error .

exception

org.apache.jasper.JasperException: Java heap space
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:433)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:355)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause

javax.servlet.ServletException: Java heap space
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:841)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:774)
    org.apache.jsp.jsp.FileManagement.downloadOut_jsp._jspService(downloadOut_jsp.java:148)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause

java.lang.OutOfMemoryError: Java heap space

How to resolve it ?

Answer 1

您可以在项目属性-Xms1024 VM参数作为-Xms1024传递。

Answer 2

If you are using windows, just open up the Apache tomcat properties.

Start -> Programs -> Apache Tomcat -> Tomcat Configuration -> Java

Answer 3

In Eclipse you can set the heap Size by passing VM arguments. Just follow these steps. Goto Run -> Run Configration -> In Arguments tab you have to enter these VM arguments which is : -Xms5m

You can also use System.gc(); to run Garbage Collector forcefully. I know its stupidity because in java it works automatically, but in some cases this stupid idea works.