Bruce - You don't say if the JVM is 32-bit or 64-bit, but assuming the latter: 1) By splitting the Heap in half between NewGen and PermGen, you are leaving no room for OldGen, and I'm sure java is going to want to set aside some space for OldGen. So you are probably getting the error because there is no room for the PermGen you requested. 2) According to Sun: "Since 1.4, MaxNewSize is computed as a function of NewRatio. [1.3.1 Sparc: 32m; 1.3.1 x86: 2.5m.]" With a default ratio of 8 or 12 (depends), you are probably losing a lot to the OldGen. 3) Also according to Sun, I am seeing this note on most memory options: "5.0 and newer: 64 bit VMs are scaled 30% larger" Here's the link I found useful: http://java.sun.com/javase/technologies/hotspot/vmoptions.jsp Jeff
-----Original Message----- From: Bruce Wayne [mailto:chur...@gmail.com] Sent: Wednesday, September 16, 2009 6:49 AM To: users@tomcat.apache.org Subject: java.lang.OutOfMemoryError: PermGen space Hello, I am running Red Hat Linux 2.6.18-164.el5 #1 SMP x86_64 x86_64 x86_64 GNU/Linux with Tomcat 6 as seen below: # /opt/tomcat/bin/version.sh Using CATALINA_BASE: /opt/tomcat Using CATALINA_HOME: /opt/tomcat Using CATALINA_TMPDIR: /opt/tomcat/temp Using JRE_HOME: /usr/java/jdk1.6.0_16 Server version: Apache Tomcat/6.0.20 Server built: May 14 2009 01:13:50 Server number: 6.0.20.0 OS Name: Linux OS Version: 2.6.18-164.el5 Architecture: amd64 JVM Version: 1.6.0_16-b01 JVM Vendor: Sun Microsystems Inc. My JAVA_OPTS are: JAVA_OPTS="$JAVA_OPTS -Djava.awt.headless=true -Dfile.encoding=UTF-8 -server -Xms2048m -Xmx2048m -XX:NewSize=1024m -XX:MaxNewSize=1024m -XX:PermSize=1024m -XX:MaxPermSize=1024m -XX:+DisableExplicitGC" My system has 6GB of RAM. I keep getting the following error: java.lang.OutOfMemoryError: PermGen space java.lang.ClassLoader.defineClass1(Native Method) java.lang.ClassLoader.defineClass(ClassLoader.java:621) java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) java.net.URLClassLoader.defineClass(URLClassLoader.java:260) java.net.URLClassLoader.access$000(URLClassLoader.java:56) java.net.URLClassLoader$1.run(URLClassLoader.java:195) java.security.AccessController.doPrivileged(Native Method) java.net.URLClassLoader.findClass(URLClassLoader.java:188) java.lang.ClassLoader.loadClass(ClassLoader.java:307) java.lang.ClassLoader.loadClass(ClassLoader.java:252) java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.<init>(Lookup Environment.java:87) org.eclipse.jdt.internal.compiler.Compiler.<init>(Compiler.java:261) org.eclipse.jdt.internal.compiler.Compiler.<init>(Compiler.java:153) org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:42 3) org.apache.jasper.compiler.Compiler.compile(Compiler.java:334) org.apache.jasper.compiler.Compiler.compile(Compiler.java:312) org.apache.jasper.compiler.Compiler.compile(Compiler.java:299) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.ja va:586) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.ja va: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) Any help would be appreciated! Thanks! ******************************* NOTICE ********************************* This message is intended for the use of the individual or entity to which it is addressed and may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient or the employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by reply or by telephone (call us collect at 512-343-9100) and immediately delete this message and all its attachments. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
