Re: [JBoss-user] Hung client

Andrew May Mon, 23 Feb 2004 01:55:04 -0800

The initial lookup will be on a fixed port (e.g. 1099 by default) - unless otherwise configured the RMI communication will then be on an anonymous (i.e. random) free port. So if you've only got 1099 open between the servers then the lookup will work but further RMI communication will then fail. We had this problem with someone who works remotely with an RMI app.

There is good news though - in recent builds you can configure which port is used for the RMI communication and make sure that this port is allowed through any firewalls etc.

If you look in conf/jboss-service.xml for the NamingService MBean:

<attribute name="Port"> is the port you do the lookup on (typically 1099)

<attribute name="RmiPort"> if zero (the default) an anonymous port will be used - set it to fix which port to use.

Hope that helps (disclaimer: I've not actually used this, but I've seen it in the config!)

-Andrew

[EMAIL PROTECTED] wrote:

Heiko

Thanks for responding. Why would such things affect the attempt to create but
not the lookup? Is it some kind of binding issue?

Regards

Eric

Quoting "Rupp, Heiko" <[EMAIL PROTECTED]>:

Very oftern in the past when such things happened, it were things like
- dns problems
- tcpd trying to do itend queries that fail/time out
- firewalls that don't to a reset for protected ports, but just drop packets

________________________________

Von: [EMAIL PROTECTED] im Auftrag von Eric J Kaplan
Gesendet: Sa 21.02.2004 14:08
An: [EMAIL PROTECTED]
Betreff: RE: [JBoss-user] Hung client

Any thoughts on this one? We look pretty silly as huge jboss advocates
when something like this happens. While we haven't ruled out something
else, I'd like to know if anyone has seen anything similar, because
there are no messages on either the server or the client. BTW, below
replace sessionbean.create() with sessionbeanhome.create().

Regards

Eric

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Friday, February 20, 2004 4:12 PM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: [JBoss-user] Hung client

We are having a very strange problem. We have three different solaris
machines
we are trying to run jboss on. On two out of the three machines, when we
run
the application server, a client on another solaris box is unable to
create a
session bean (sessionbean.create()) after a successful jndi lookup. It
just
seems to hang forever, no message, no exception, nothing obvious, with
the
stack trace shown below.

However, if the client is on the same box as the server, it is ok. On
one of the
machines, when we run jboss, we can connect from a different machine.

We are told that the two server machines we are having a problem on are
"server"
machines, but we aren't sure what this means. Does anyone know of anyone
having
similar issues? This is jboss 3.2.3.

We have run successfuly on jboss for a while, just seeing this problem
now at a
new installation.

Urgent, any help would be appreciated.

Regards

"main" prio=5 tid=0x00742D90 nid=0x13c runnable [6e000..6fc40]
       at java.net.PlainSocketImpl.socketConnect(Native Method)
       at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
       - locked <02C41ED8> (a java.net.PlainSocketImpl)
       at
java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)
       at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)
       at java.net.Socket.connect(Socket.java:434)
       at java.net.Socket.connect(Socket.java:384)
       at java.net.Socket.<init>(Socket.java:291)
       at java.net.Socket.<init>(Socket.java:119)
       at
sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirect
SocketFactory.java:22)
       at
sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMaster
SocketFactory.java:128)
       at
sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:562)
       at
sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:185
)
       at
sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:171)
       at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:313)
       at sun.rmi.transport.DGCImpl_Stub.dirty(Unknown Source)
       at
sun.rmi.transport.DGCClient$EndpointEntry.makeDirtyCall(DGCClient.jav
a:328)
       at
sun.rmi.transport.DGCClient$EndpointEntry.registerRefs(DGCClient.java
:275)
       at sun.rmi.transport.DGCClient.registerRefs(DGCClient.java:112)
       at sun.rmi.transport.LiveRef.read(LiveRef.java:274)
       at sun.rmi.server.UnicastRef2.readExternal(UnicastRef2.java:54)
       at
java.rmi.server.RemoteObject.readObject(RemoteObject.java:420)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
       at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:324)
       at
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:824
)
       at
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1746)

       at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
646)
       at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
       at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
       at
org.jboss.invocation.jrmp.interfaces.JRMPInvokerProxy.readExternal(JR
MPInvokerProxy.java:200)
       at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:168
6)
       at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
644)
       at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
       at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
       at java.util.HashMap.readObject(HashMap.java:986)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
       at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:324)
       at
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:824
)
       at
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1746)

       at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
646)
       at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
       at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:18
45)
       at
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1769)

       at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
646)
       at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
       at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
       at
org.jboss.proxy.ClientContainer.readExternal(ClientContainer.java:112
)
       at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:168
6)
       at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
644)
       at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
       at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:18
45)
       at
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1769)

       at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
646)
       at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
       at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
       at java.rmi.MarshalledObject.get(MarshalledObject.java:135)
       at
org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:3
0)
       at
org.jnp.interfaces.NamingContext.lookup(NamingContext.java:550)
       at
org.jnp.interfaces.NamingContext.lookup(NamingContext.java:507)
       at javax.naming.InitialContext.lookup(InitialContext.java:347)
       at
com.armanta.ejb.ArmantaDataAbstraction.getHome(ArmantaDataAbstraction
.java:147)
       at com.armanta.rptgen.DataServer.c(DataServer.java:1622)
       at
com.armanta.rptgen.DataServer.getReportDate(DataServer.java:891)
       at com.armanta.guiutil.LoginDialog.<init>(LoginDialog.java:94)
       at
com.armanta.app.coldefs.ColdefsViewer.<init>(ColdefsViewer.java:101)
       at
com.armanta.app.coldefs.ColdefsViewer.main(ColdefsViewer.java:111)

"VM Thread" prio=5 tid=0x00746E50 nid=0x13b runnable

"VM Periodic Task Thread" prio=10 tid=0x0074A090 nid=0xfa waiting on
condition
"Suspend Checker Thread" prio=10 tid=0x0074B6F0 nid=0x130 runnable

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Re: [JBoss-user] Hung client

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