JMX / JConsole regression with Attach API using Java 7u40 ?

[Staffan Larsen]

On 14 okt 2013, at 10:56, Christopher Brown <christopherbrown06 at gmail.com> wrote:

> Hello,
> 
> Thanks, the -XX:+StartAttachListener option did the trick.
> 
> I'm assuming that this is a cross-platform switch, with nothing OSX-specific, and so is safe and portable for a common development environment (Ant script...) that runs on OS X, Windows, and Linux? 

Yes.

/Staffan


> (obviously, we wouldn't use an insecure connection outside of our developement environment!)
> 
> In any case, you fast and helpful reply is much appreciated!
> 
> --
> Christopher
> 
> 
> On 14 October 2013 10:50, Staffan Larsen <staffan.larsen at oracle.com> wrote:
> Another workaround (thanks Alan Bateman) is to run the application with -XX:+StartAttachListener since this avoids the need for signals.
> 
> /Staffan
> 
> On 14 okt 2013, at 10:19, Staffan Larsen <staffan.larsen at oracle.com> wrote:
> 
> > Taking another look, I think this is the same problem as reported in: http://mail.openjdk.java.net/pipermail/serviceability-dev/2013-August/011318.html
> >
> > The bug report is at: https://bugs.openjdk.java.net/browse/JDK-8023786
> >
> > A workaround may be to run the application with -Xverify:none until an update of JDK7 fixes this.
> >
> > Thanks,
> > /Staffan
> >
> >
> > On 14 okt 2013, at 09:58, Staffan Larsen <staffan.larsen at oracle.com> wrote:
> >
> >> The ConnectionFailedSSL1 and ConnectionFailedSSL2 messages should read:
> >>
> >> Secure connection failed. Retry insecurely?
> >> The connection to {0} could not be made using SSL.
> >> Would you like to try without SSL?
> >> (Username and password will be sent in plain text.)
> >>
> >> Pressing 'Insecure' will then connect without SSL.
> >>
> >> But form the stack trace you provide this does not look like the problem you are running into. Can try deleting all files called .attach_pidXXX and .java_pidXXX in your $TMPDIR? Also make sure jconsole and java are launched as the same user.
> >>
> >> Thanks,
> >> /Staffan
> >>
> >> On 12 okt 2013, at 23:00, Christopher Brown <christopherbrown06 at gmail.com> wrote:
> >>
> >>> Hello,
> >>>
> >>> When I start an application, using Apple Java 1.6.0_51 (with "java -jar
> >>> application.jar" and no "-D" parameters), I can connect to it using
> >>> JConsole, using either the Apple Java 6 version or the Oracle Java 7
> >>> version.  The application registers some MXBeans using the
> >>> PlatformMBeanServer.
> >>>
> >>> Now, when I start that same application, using Oracle Java 1.7.0_40, in the
> >>> same way, it is still visible using the Java 7 JConsole under "local
> >>> processes", however connection using JConsole and VisualVM fails.
> >>>
> >>> Running JConsole with the "-debug" option, the following stacktrace is
> >>> displayed when JConsole fails to connect:
> >>>
> >>> java.io.IOException: Unable to open socket file: target process not
> >>> responding or HotSpot VM not loaded
> >>>  at
> >>> sun.tools.jconsole.LocalVirtualMachine.loadManagementAgent(LocalVirtualMachine.java:238)
> >>>  at
> >>> sun.tools.jconsole.LocalVirtualMachine.startManagementAgent(LocalVirtualMachine.java:100)
> >>>  at sun.tools.jconsole.ProxyClient.tryConnect(ProxyClient.java:333)
> >>>  at sun.tools.jconsole.ProxyClient.connect(ProxyClient.java:313)
> >>>  at sun.tools.jconsole.VMPanel$2.run(VMPanel.java:292)
> >>> Caused by: com.sun.tools.attach.AttachNotSupportedException: Unable to open
> >>> socket file: target process not responding or HotSpot VM not loaded
> >>>  at sun.tools.attach.BsdVirtualMachine.<init>(BsdVirtualMachine.java:90)
> >>>  at
> >>> sun.tools.attach.BsdAttachProvider.attachVirtualMachine(BsdAttachProvider.java:63)
> >>>  at com.sun.tools.attach.VirtualMachine.attach(VirtualMachine.java:213)
> >>>  at
> >>> sun.tools.jconsole.LocalVirtualMachine.loadManagementAgent(LocalVirtualMachine.java:236)
> >>>  ... 4 more
> >>>
> >>> JConsole displays the dialog "ConnectionFailedSSL1" and
> >>> "ConnectionFailedSSL2", with [Cancel] and [Insecure] options.  If I click
> >>> "insecure", it fails in exactly the same with.
> >>>
> >>> For a development environment, how can I get things working again so that
> >>> it "just works" (Oracle Java 7 VM and Java 7 JConsole) ?
> >>>
> >>> Thanks,
> >>> Christopher
> >>
> >
> 
>