Erro ao carregar aplicação WEB - AJUDA

Front-end
#1

Galera, possuo uma aplicação Web rodando em um servidor aqui na empresa…
abro a pagina do apache tomcat manager… entro na aplicação (login + pagina principal de menu)
Quando clico em qualuer coisa do menu, ele carrega esta página:
Alguem sabe oq fazer?

type Exception report

message

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

exception

javax.servlet.ServletException: javax.servlet.jsp.JspException: java.lang.OutOfMemoryError: Java heap space
	org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:842)
	org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:779)
	org.apache.jsp.pages.cadastro_005famostra_jsp._jspService(cadastro_005famostra_jsp.java:149)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
	com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:142)
	com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
	com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
	com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)

root cause

javax.faces.el.EvaluationException: java.lang.OutOfMemoryError: Java heap space
	com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:185)
	com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:136)
	javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:308)
	javax.faces.webapp.UIComponentTag.isSuppressed(UIComponentTag.java:828)
	javax.faces.webapp.UIComponentTag.doStartTag(UIComponentTag.java:460)
	com.sun.faces.taglib.html_basic.PanelGridTag.doStartTag(PanelGridTag.java:436)
	org.apache.jsp.pages.cadastro_005famostra_jsp._jspx_meth_h_panelGrid_0(cadastro_005famostra_jsp.java:269)
	org.apache.jsp.pages.cadastro_005famostra_jsp._jspx_meth_h_form_0(cadastro_005famostra_jsp.java:221)
	org.apache.jsp.pages.cadastro_005famostra_jsp._jspx_meth_f_view_0(cadastro_005famostra_jsp.java:191)
	org.apache.jsp.pages.cadastro_005famostra_jsp._jspService(cadastro_005famostra_jsp.java:139)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
	com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:142)
	com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
	com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
	com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)

note The full stack trace of the root cause is available in the Apache Tomcat/5.0.30 logs.
#2