adjust to matched your jre install:
and then restart firefox.
G’Day,
I run my own template engine using JSP’s. After I added some dynamic templates (I generate the JSP’s with a JSP 🙂 ) the number of JSP’s exploded and tomcat started to run slowly. So easy fix was just to allocate some more memory. I edited startup.sh:
exec "$PRGDIR"/"$EXECUTABLE" start "$@" -Xmx4096m
but the proper fix will be to unload the servlet after they are used (since they are only used once).
Also note, I’m running 64bit, so I can say 4096m 🙂 It’s nice when 64bit actually helps rather than causes you pain.
Interestingly enough, the problem can be traced to tomcat, and someone recently submitted a patch for exactly the behaviour I’m seeing!
And (Since I didn’t apply the patch), but the current last line in my startup.sh is:
exec "$PRGDIR"/"$EXECUTABLE" start "$@" -Xms4000m -Xmx5096m -XX:-UseGCOverheadLimit
okay, so that all didn’t work that great, and so I built apache with the above patch. Works great.
On my 64bit CentOS 5.4 linux install just installing ant and tomcat fails.
It fails when I go to start the tomcat service or just run ant.
I tried many different things to fix the problem, including removing all the jre/jdks/ant/open jdks and sun jdk’s. My original solution was to stop using the rpm’s and just download direct from apache (and in the case of ant, set ANT_HOME and JAVA_HOME in /usr/local/apache-ant-version/bin/ant). A typical error would look like this:
[cameron@mars java]$ /usr/bin/ant /usr/bin/build-classpath: error: JAVA_LIBDIR must be set Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/Launcher Caused by: java.lang.ClassNotFoundException: org.apache.tools.ant.launch.Launcher at java.net.URLClassLoader$1.run(URLClassLoader.java:217) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at java.lang.ClassLoader.loadClass(ClassLoader.java:319) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) at java.lang.ClassLoader.loadClass(ClassLoader.java:264) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:332) [cameron@mars java]$
I have two systems that I set up basically identically, it worked fine on one (a parallels jvm running centos 5.4 64bit on my macbook pro) and nothing but problems with a native install. In the end the solution was very simple.
edit your /etc/java/java.conf file.
/etc/java/java.conf
# System-wide Java configuration file -*- sh -*- # # JPackage Project # Location of jar files on the system JAVA_LIBDIR=/usr/share/java # Location of arch-specific jar files on the system JNI_LIBDIR=/usr/lib/java # Root of all JVM installations JVM_ROOT=/usr/lib/jvm # You can define a system-wide JVM root here if you're not using the default one #JAVA_HOME=$JVM_ROOT/java # Options to pass to the java interpreter JAVACMD_OPTS=