java.lang.OutOfMemoryError and Unable to compile class for JSP

[Sundar pandian]

Hi All,

I am new to this java related things.. I am working in Web application where we manage data and files. When I click a webpage for for invoking a functionality I am getting this two errors. When I try for the first time I get as below (javax.servlet.ServletException: java.lang.OutOfMemoryError) marked in italic.

After closing this window and clicking on same functionality I am getting Unable to compile class for JSP as a second error marked in Bold.

javax.servlet.ServletException: java.lang.OutOfMemoryError
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:275)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

java.lang.OutOfMemoryError
java.util.zip.ZipFile.open(Native Method)
java.util.zip.ZipFile.<init>(ZipFile.java:203)
java.util.jar.JarFile.<init>(JarFile.java:132)
java.util.jar.JarFile.<init>(JarFile.java:97)
org.apache.catalina.loader.WebappClassLoader.openJARs(WebappClassLoader.java:1756)
org.apache.catalina.loader.WebappClassLoader.findResourceInternal(WebappClassLoader.java:1996)
org.apache.catalina.loader.WebappClassLoader.findResource(WebappClassLoader.java:961)
org.apache.catalina.loader.WebappClassLoader.getResourceAsStream(WebappClassLoader.java:1182)
org.apache.jasper.servlet.JasperLoader.getResourceAsStream(JasperLoader.java:144)
org.apache.jasper.compiler.JDTCompiler$1.findType(JDTCompiler.java:193)
org.apache.jasper.compiler.JDTCompiler$1.findType(JDTCompiler.java:178)
org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.askForType(LookupEnvironment.java:122)
org.eclipse.jdt.internal.compiler.lookup.PackageBinding.getTypeOrPackage(PackageBinding.java:178)
org.eclipse.jdt.internal.compiler.lookup.Scope.getTypeOrPackage(Scope.java:2391)
org.eclipse.jdt.internal.compiler.lookup.Scope.getType(Scope.java:2129)
org.eclipse.jdt.internal.compiler.ast.SingleTypeReference.getTypeBinding(SingleTypeReference.java:44)
org.eclipse.jdt.internal.compiler.ast.TypeReference.resolveType(TypeReference.java:134)
org.eclipse.jdt.internal.compiler.ast.LocalDeclaration.resolve(LocalDeclaration.java:138)
org.eclipse.jdt.internal.compiler.ast.Block.resolveUsing(Block.java:115)
org.eclipse.jdt.internal.compiler.ast.TryStatement.resolve(TryStatement.java:799)
org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.resolveStatements(AbstractMethodDeclaration.java:429)
org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.resolveStatements(MethodDeclaration.java:196)
org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.resolve(AbstractMethodDeclaration.java:400)
org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.resolve(TypeDeclaration.java:1085)
org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.resolve(TypeDeclaration.java:1164)
org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.resolve(CompilationUnitDeclaration.java:366)
org.eclipse.jdt.internal.compiler.Compiler.process(Compiler.java:623)
org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:392)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:413)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:317)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:295)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:282)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:586)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)



This is Second error message

HTTP Status 500 -

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

type Exception report

message

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

exception

org.apache.jasper.JasperException: org.apache.jasper.JasperException: Unable to compile class for JSP
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:486)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:338)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

org.apache.jasper.JasperException: Unable to compile class for JSP
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:594)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)Is there any relationships between this two error messages. Can you please help with your comments.

[Rob Spoor]

Either you have one very large JAR file on your class path, or you have to many JAR files. How much memory have you assigned to Tomcat?

[Sundar pandian]

Hi Rob,

Where I need to check this tomcat memory info..Sorry for the stupid question as I am bit new to Tomcat stuff

[Rob Spoor]

It depends on how you start Tomcat. If you installed it on Windows using the installer, there is a Tomcat configuration tool available. With this you can specify how much memory the JVM allocates for Tomcat (as well as other JVM properties).
If you installed Tomcat without the installer (i.e. from a ZIP file) or are using Linux then I cannot tell you where to change this.

[Sundar pandian]

Hi Rob,

Thanks for getting back. This problem got cleared when I gone for server restart.

[Rob Spoor]

You're welcome.