Birt Chart Excepption

Hi,

I created charts report and while running the charts in production through tomcat server, i am getting following below error:


HTTP Status 500 -

--------------------------------------------------------------------------------

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Servlet execution threw an exception
org.eclipse.birt.report.filter.ViewerFilter.doFilter(ViewerFilter.java:68)


root cause

java.lang.OutOfMemoryError: PermGen space


note The full stack trace of the root cause is available in the Apache Tomcat/6.0.32 logs.


--------------------------------------------------------------------------------

Apache Tomcat/6.0.32


NOTE:- I am using birt 3.7.2 open source version.


Could you please help me out on this problem.


Regards,
Kiran