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Questions and Answers

by dizzzz at 2008/08/21 at 18:40:24 z

My webstart client does not start (with log)

Probably you see something like

An error occurred while launching/running the application.
Title: eXist XML-DB client
Vendor: exist-db.org
Category: Security Error
Unsigned application requesting unrestricted access to system
Unsigned resource: http://localhost:8080/exist/webstart/stax-api-1.0.1.jar

while the exception reads like: 

JNLPException[category: Security Error : Exception: null : LaunchDesc: 
<jnlp spec="1.0+" codebase="http://localhost:8080/exist/webstart/"
      href="http://localhost:8080/exist/webstart/exist.jnlp">

The solution is to re-sign the jar files:

build.sh -f build/scripts/jarsigner.xml jnlp-unsign-all jnlp-sign-all

eXist-db does not start in Apache Tomcat

The war files are tested and should work. Be sure that tomcat is not setup with the "SecurityManager" enabled (we should work this out) and that (for older versions of tomcat) all relevant XML jar files (xerces, resolver, xalan) have been installed in the 'endorsed' directory.

For more information check our documentation.

Explicit validation does not work in Apache Tomcat

There are indeed limitations regarding the functionality of the "validation:" functions, due to restrictions of tomcat. These are very vague.

eXist-db does not work/install on RedHat, Ubuntu, Linux

Probably you use the default installed java version, gnu classpath/gjc. We recommend the Sun JVM, but JVMs of other vendors should work as well

Search for "gjc" in the errormessages:

java.lang.ArrayIndexOutOfBoundsException
   at java.lang.System.arraycopy(libgcj.so.70)
   at java.io.ObjectInputStream.read(libgcj.so.70 )
   at java.io.InputStream.skip(libgcj.so.70)
   at com.izforge.izpack.installer.Unpacker.run(Unpacker.java:425)
   at java.lang.Thread.run(libgcj.so.70)

or 

12 Aug 2008 16:34:31,161 [P1-9] WARN  (ServletHandler.java
[handle]:629) - Error for /exist/logo.jpg
java.lang.NoClassDefFoundError: org.apache.cocoon.reading.ImageReader
  at java.lang.Class.initializeClass(libgcj.so.81)
  at java.lang.Class.newInstance(libgcj.so.81)

or

Exception in thread "main" java.lang.InternalError: unexpected exception
during linking: java.lang.ClassNotFoundException: javax.swing.JFrame
  at 0x004f8ca3: java.lang.Throwable.Throwable(java.lang.String)
(/usr/lib/./libgcj.so.3)
  at 0x004ebb1e: java.lang.Error.Error(java.lang.String)
(/usr/lib/./libgcj.so.3)
  at 0x004f9086:
java.lang.VirtualMachineError.VirtualMachineError(java.lang.String)
(/usr/lib/./libgcj.so.3)

ant can help you out to determine the java version:

ant -diagnostics | grep java.vm

or

build.sh diagnostics | grep java.vm

results in

java.vm.version : 1.5.0_13-119
java.vm.vendor : Apple Inc.
java.vm.name : Java HotSpot(TM) Client VM
java.vm.specification.name : Java Virtual Machine Specification
java.vm.specification.vendor : Sun Microsystems Inc.
java.vm.specification.version : 1.0
java.vm.info : mixed mode