Hi, Some questions:
1. Is that the full stack trace? 2. How are you invoking your program? In particular, are you using a javaagent flag? 3. What version of OpenJPA are you using? Thanks, -Patrick On Dec 30, 2007 2:27 PM, David Beer <[EMAIL PROTECTED]> wrote: > Hi All > > I am trying to develop an RCP (Rich Client Platform) application based > on the netbeans platform. Previously I have used TopLink, but would like > to move over to OpenJPA. > > Any way my main problem is that I am getting the following exception > thrown when trying to connect to the database at start up. > > Exception in thread "Attach Listener" Agent failed to start! > java.lang.ClassNotFoundException: > org.apache.openjpa.enhance.InstrumentationFactory > at java.net.URLClassLoader$1.run(URLClassLoader.java:200) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:188) > at java.lang.ClassLoader.loadClass(ClassLoader.java:306) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276) > at java.lang.ClassLoader.loadClass(ClassLoader.java:251) > at > sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:280) > at > sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348) > > The application still manages to connect to the database. Do I need to > pass something to the main start up of the application. The jar file is > part of the program. > > Thanks > > David > > > > -- Patrick Linskey 202 669 5907
