I have noticed that if you have some class files missing, the
initialization fails with this exception.  The way I debugged this was
to (I use Jbuilder, although I suspect this will work with Eclipse as
well) set an exception breakpoint and look at the trace file.  It's
probably a ClassNotFoundException (this is just a guess)- that's what it
was for me.  Putting the proper jar files in the class path fixed the
problem for me
Raghavan


-----Original Message-----
From: A Leg [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, November 11, 2003 11:53 AM
To: [EMAIL PROTECTED]
Subject: Any body can help me?


Hi

When I start my application I get this error.

It's probably a beginner error, but I get stuck

Thank's for any help to enable me to go ahead with ojb.

Andre

[org.apache.ojb.broker.core.PersistenceBrokerFactoryDefaultImpl] ERROR:
Creation of a new PB instance failed null
java.lang.reflect.InvocationTargetException[org.apache.ojb.broker.core.P
ersistenceBrokerFactoryDefaultImpl] 

ERROR: Creation of a new PB instance failed
null

        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
        at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorA
ccessorImpl.java:39)
        at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingCons
tructorAccessorImpl.java:27)
        at
java.lang.reflect.Constructor.newInstance(Constructor.java:274)
        at org.apache.ojb.broker.util.ClassHelper.newInstance(Unknown
Source)
        at
org.apache.ojb.broker.core.PersistenceBrokerFactoryDefaultImpl.createNew
BrokerInstance(Unknown 

Source)
//ojb.broker.core.PersistenceBrokerFactoryDefaultImpl exist in classpath
        at
org.apache.ojb.broker.core.PersistenceBrokerFactoryDefaultImpl$PBKeyedPo
olableObjectFactory.makeObject(Unknown 

Source)
        at
org.apache.commons.pool.impl.GenericKeyedObjectPool.borrowObject(Generic
KeyedObjectPool.java:748)
        at
org.apache.ojb.broker.core.PersistenceBrokerFactoryDefaultImpl.createPer
sistenceBroker(Unknown 

Source)
        at
org.apache.ojb.broker.core.PersistenceBrokerFactoryDefaultImpl.defaultPe
rsistenceBroker(Unknown 

Source)
        at
org.apache.ojb.broker.PersistenceBrokerFactory.defaultPersistenceBroker(
Unknown 

Source)



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