Hi all,
i am quite perplexed by this situation. My config is JBOSS 3.2.1 with Java and
connecting to a postgres database. all my connections work just fine and our
system is in good shape except one glitch.
We are retrieving data from some external datasource. This process takes a good
20-30 minutes to come back. In all these activities we are using simple
stateless session beans. one bean calls another and so on.
Since it takes such a long time to come back, i believe JBOSS will obviously
destroy some of the stateless session beans or ejbRemove them. So i have code
to close the connection to a db in the remove method..
however midway through those 20 minutes, i get a could not passivate exception.
Here's the stack trace:
javax.ejb.EJBException: Could not passivate; failed to save state;
CausedByException is:
org.jboss.resource.adapter.jdbc.WrappedConnection
at
org.jboss.ejb.plugins.StatefulSessionFilePersistenceManager.passivateSession(StatefulSessionFilePersistenceManager.java:378)
at
org.jboss.ejb.plugins.StatefulSessionInstanceCache.passivate(StatefulSessionInstanceCache.java:85)
at
org.jboss.ejb.plugins.AbstractInstanceCache.tryToPassivate(AbstractInstanceCache.java:156)
at
org.jboss.ejb.plugins.AbstractInstanceCache.release(AbstractInstanceCache.java:192)
at
org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy.ageOut(LRUEnterpriseContextCachePolicy.java:274)
at
org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy$OveragerTask.kickOut(LRUEnterpriseContextCachePolicy.java:446)
at
org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy$OveragerTask.run(LRUEnterpriseContextCachePolicy.java:405)
at java.util.TimerThread.mainLoop(Timer.java:432)
at java.util.TimerThread.run(Timer.java:382)
java.io.NotSerializableException:
org.jboss.resource.adapter.jdbc.WrappedConnection
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1054)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278)
at
org.jboss.ejb.plugins.StatefulSessionFilePersistenceManager.passivateSession(StatefulSessionFilePersistenceManager.java:370)
at
org.jboss.ejb.plugins.StatefulSessionInstanceCache.passivate(StatefulSessionInstanceCache.java:85)
at
org.jboss.ejb.plugins.AbstractInstanceCache.tryToPassivate(AbstractInstanceCache.java:156)
at
org.jboss.ejb.plugins.AbstractInstanceCache.release(AbstractInstanceCache.java:192)
at
org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy.ageOut(LRUEnterpriseContextCachePolicy.java:274)
at
org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy$OveragerTask.kickOut(LRUEnterpriseContextCachePolicy.java:446)
at
org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy$OveragerTask.run(LRUEnterpriseContextCachePolicy.java:405)
at java.util.TimerThread.mainLoop(Timer.java:432)
at java.util.TimerThread.run(Timer.java:382)
now here's a list of my questions, firstly I don't know which passivate method
of which class does this call. I can put print statements and figure that out
hopefully but that's a minor issue.
here's the ejb methods of the class that contains the control when this
exception is thrown...
public void ejbCreate() throws CreateException {
/** @todo Complete this method */
Context ctx;
try {
ctx = new InitialContext();
mCCEDataSource = (DataSource) ctx.lookup("java:/CCEDS");
mNCBIProxy = new SeqHound(
"C:\\jboss-3.2.1\\server\\default\\deploy\\.shoundremrc");
mNCBIProxy.SHoundInit(true, "CCE");
System.out.println("ejbCreate looked up CCEDS successfully");
}
catch (Exception e) {
e.printStackTrace();
throw new CreateException();
}
}
public void ejbRemove() throws EJBException, RemoteException {
try {
if (mCCEDataSourceConnection != null) {
mCCEDataSourceConnection.close();
}
mNCBIProxy.SHoundFini();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
Mind you this is a stateless session bean, (saw it in the ejb jar file). I
don't know what else to post. I need some help debugging this and finding out
what the exact problem is.
Any pointers are appreciated.
Thanks
Anuj
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