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Java.lang.SecurityException: Waiting for remote reference sun.rmi.server.UnicastRef2 in stub

I am trying to connect to a remote Java process that is running on another machine using the JConsole tool on my Ubuntu machine.

This is how I run my Java program on a remote machine:

sudo java -Dcom.sun.management.jmxremote.port = 51082 -Dcom.sun.management.jmxremote.authenticate = false -Dcom.sun.management.jmxremote.ssl = false -jar myfile.jar

I am running JConsole command on my machine like this:

jconsole -debug -J-Djava.util.logging.config.file = Logging.properties

This is my file Logging.properties

:

handlers = java.util.logging.ConsoleHandler

sun.rmi.level=FINEST
.level = INFO

java.util.logging.ConsoleHandler.level = FINEST

java.util.logging.ConsoleHandler.formatter = \

java.util.logging.SimpleFormatter

// Use FINER or FINEST for javax.management.remote.level - FINEST is

// very verbose...

javax.management.level = FINEST

javax.management.remote.level = FINER

Now on my Jconsle UI I have given below properties:

enter image description here

When I click the button Connect

I get an exception saying:

    FINER: [javax.management.remote.rmi.RMIConnector: jmxServiceURL=service:jmx:rmi:///jndi/rmi://my-remote-host:51082/jmxrmi] failed to connect: java.lang.SecurityException: Expecting a sun.rmi.server.UnicastRef2 remote reference in stub!
    java.lang.SecurityException: Expecting a sun.rmi.server.UnicastRef2 remote reference in stub!

This is the complete stacktrace of the exception as per logs:

Jul 14, 2015 7:39:55 PM RMIConnector connect
FINER: [javax.management.remote.rmi.RMIConnector: jmxServiceURL=service:jmx:rmi:///jndi/rmi://my-remote-host:51082/jmxrmi] connecting...
Jul 14, 2015 7:39:55 PM RMIConnector connect
FINER: [javax.management.remote.rmi.RMIConnector: jmxServiceURL=service:jmx:rmi:///jndi/rmi://my-remote-host:51082/jmxrmi] finding stub...
Jul 14, 2015 7:39:55 PM sun.rmi.transport.tcp.TCPEndpoint <clinit>
FINE: VMPanel.connect: localHostKnown = true, localHost = 127.0.0.8
Jul 14, 2015 7:39:55 PM sun.rmi.server.UnicastRef newCall
FINE: VMPanel.connect: get connection
Jul 14, 2015 7:39:55 PM sun.rmi.transport.tcp.TCPTransport <init>
FINE: VMPanel.connect: Version = 2, ep = [127.0.0.8:0]
Jul 14, 2015 7:39:55 PM sun.rmi.transport.tcp.TCPEndpoint getLocalEndpoint
FINE: VMPanel.connect: created local endpoint for socket factory null on port 0
Jul 14, 2015 7:39:55 PM sun.rmi.transport.tcp.TCPChannel createConnection
FINE: VMPanel.connect: create connection
Jul 14, 2015 7:39:55 PM sun.rmi.transport.tcp.TCPEndpoint newSocket
FINER: VMPanel.connect: opening socket to [my-remote-host:51082]
Jul 14, 2015 7:39:55 PM sun.rmi.transport.proxy.RMIMasterSocketFactory createSocket
FINE: VMPanel.connect: host: my-remote-host, port: 51082
Jul 14, 2015 7:39:58 PM sun.rmi.transport.tcp.TCPChannel createConnection
FINER: VMPanel.connect: server suggested 10.56.36.2:36585
Jul 14, 2015 7:39:58 PM sun.rmi.transport.tcp.TCPChannel createConnection
FINER: VMPanel.connect: using 127.0.0.8:0
Jul 14, 2015 7:39:58 PM sun.rmi.server.UnicastRef newCall
FINER: VMPanel.connect: create call context
Jul 14, 2015 7:39:58 PM sun.rmi.server.UnicastRef logClientCall
FINER: VMPanel.connect: outbound call: [endpoint:[my-remote-host:51082](remote),objID:[0:0:0, 0]] : sun.rmi.registry.RegistryImpl_Stub[0:0:0, 0]: java.rmi.Remote lookup(java.lang.String)
Jul 14, 2015 7:39:58 PM sun.rmi.transport.StreamRemoteCall <init>
FINER: VMPanel.connect: write remote call header...
Jul 14, 2015 7:39:58 PM sun.rmi.transport.StreamRemoteCall getOutputStream
FINER: VMPanel.connect: getting output stream
Jul 14, 2015 7:39:58 PM sun.rmi.server.UnicastRef invoke
FINER: VMPanel.connect: execute call
Jul 14, 2015 7:39:59 PM sun.rmi.transport.StreamRemoteCall getInputStream
FINER: VMPanel.connect: getting input stream
Jul 14, 2015 7:39:59 PM sun.rmi.server.LoaderHandler loadClass
FINE: VMPanel.connect: name = "javax.management.remote.rmi.RMIServerImpl_Stub", codebase = "", defaultLoader = sun.misc.Launcher$AppClassLoader@530f243b
Jul 14, 2015 7:39:59 PM sun.rmi.server.LoaderHandler loadClass
FINER: VMPanel.connect: class "javax.management.remote.rmi.RMIServerImpl_Stub" found via defaultLoader, defined by null
Jul 14, 2015 7:39:59 PM sun.rmi.server.LoaderHandler loadClass
FINE: VMPanel.connect: name = "java.rmi.server.RemoteStub", codebase = "", defaultLoader = sun.misc.Launcher$AppClassLoader@530f243b
Jul 14, 2015 7:39:59 PM sun.rmi.server.LoaderHandler loadClass
FINER: VMPanel.connect: class "java.rmi.server.RemoteStub" found via defaultLoader, defined by null
Jul 14, 2015 7:39:59 PM sun.rmi.server.LoaderHandler loadClass
FINE: VMPanel.connect: name = "java.rmi.server.RemoteObject", codebase = "", defaultLoader = sun.misc.Launcher$AppClassLoader@530f243b
Jul 14, 2015 7:39:59 PM sun.rmi.server.LoaderHandler loadClass
FINER: VMPanel.connect: class "java.rmi.server.RemoteObject" found via defaultLoader, defined by null
Jul 14, 2015 7:39:59 PM sun.rmi.server.UnicastRef done
FINE: VMPanel.connect: free connection (reuse = true)
Jul 14, 2015 7:39:59 PM sun.rmi.transport.tcp.TCPChannel free
FINE: VMPanel.connect: reuse connection
Jul 14, 2015 7:39:59 PM sun.rmi.transport.tcp.TCPChannel free
FINE: VMPanel.connect: create reaper
Jul 14, 2015 7:39:59 PM sun.rmi.server.UnicastRef newCall
FINE: VMPanel.connect: get connection
Jul 14, 2015 7:39:59 PM sun.rmi.transport.tcp.TCPChannel createConnection
FINE: VMPanel.connect: create connection
Jul 14, 2015 7:39:59 PM sun.rmi.transport.tcp.TCPEndpoint newSocket
FINER: VMPanel.connect: opening socket to [127.0.1.1:57675]
Jul 14, 2015 7:39:59 PM sun.rmi.transport.proxy.RMIMasterSocketFactory createSocket
FINE: VMPanel.connect: host: 127.0.1.1, port: 57675
Jul 14, 2015 7:39:59 PM sun.rmi.server.UnicastRef newCall
FINE: RMI RenewClean-[127.0.1.1:57675]: get connection
Jul 14, 2015 7:39:59 PM sun.rmi.transport.tcp.TCPChannel createConnection
FINE: RMI RenewClean-[127.0.1.1:57675]: create connection
Jul 14, 2015 7:39:59 PM sun.rmi.transport.tcp.TCPEndpoint newSocket
FINER: RMI RenewClean-[127.0.1.1:57675]: opening socket to [127.0.1.1:57675]
Jul 14, 2015 7:39:59 PM sun.rmi.transport.WeakRef pin
FINER: VMPanel.connect: strongRef = sun.rmi.transport.DGCImpl@63a1b509
Jul 14, 2015 7:40:00 PM sun.rmi.transport.proxy.RMIMasterSocketFactory createSocket
FINE: RMI RenewClean-[127.0.1.1:57675]: host: 127.0.1.1, port: 57675
Jul 14, 2015 7:40:00 PM sun.rmi.transport.ObjectTable putTarget
FINER: VMPanel.connect: add object [0:0:0, 2]
Jul 14, 2015 7:40:00 PM sun.rmi.transport.ConnectionInputStream done
FINER: VMPanel.connect: send ack
Jul 14, 2015 7:40:00 PM sun.rmi.transport.tcp.TCPChannel newConnection
FINE: VMPanel.connect: reuse connection
Jul 14, 2015 7:40:00 PM sun.rmi.transport.tcp.TCPChannel free
FINE: VMPanel.connect: reuse connection
Jul 14, 2015 7:40:00 PM RMIConnector connect
FINER: [javax.management.remote.rmi.RMIConnector: jmxServiceURL=service:jmx:rmi:///jndi/rmi://my-remote-host:51082/jmxrmi] failed to connect: java.lang.SecurityException: Expecting a sun.rmi.server.UnicastRef2 remote reference in stub!
java.lang.SecurityException: Expecting a sun.rmi.server.UnicastRef2 remote reference in stub!
    at javax.management.remote.rmi.RMIConnector.checkStub(RMIConnector.java:1871)
    at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:295)
    at javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:268)
    at sun.tools.jconsole.ProxyClient.tryConnect(ProxyClient.java:357)
    at sun.tools.jconsole.ProxyClient.connect(ProxyClient.java:313)
    at sun.tools.jconsole.VMPanel$2.run(VMPanel.java:292)
Jul 14, 2015 7:40:01 PM sun.rmi.server.UnicastRef newCall
FINE: RMI RenewClean-[127.0.1.1:57675]: get connection
Jul 14, 2015 7:40:01 PM sun.rmi.transport.tcp.TCPChannel createConnection

I can't figure out what the problem is.

update:

I can connect to a remote host for a given port:

telnet my_remote_host 51082

Following this link , I received a response from the host without any problem.

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1 answer


Use the settings below. I also faced the same problem but solved after setting below options

-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate = false -Dcom.sun.management.jmxremote.ssl = false -Dcom.sun.management.jmxremote.port = 9704 -Djava.rmi.server .hostname = 172.18.137.35 -Dcom.sun.management.jmxremote.rmi.port = 9704 "



Pay attention to Djava.rmi.server.hostname and Dcom.sun.management.jmxremote.rmi.port, even after these settings it will ask you to enter an insecure connection, please accept it as "yes", then you can connect (it hurts then you receive the error message "unable to connect: java.lang.SecurityException: Waiting for remote reference sun.rmi.server.UnicastRef2 in stub!"). Hope

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