Enable remote debugging in a running JVM
Is it possible to debug an application, which is already running in the server without restarting. If so how? if not what is the reason?
steps:
1. run the application in the server with out adding the debugging arguments.
2. once server is up, debug the application.
Thanks!!
yes, i believe it is possible. it's kind of obscure information, but it is basically similar to the ability of jvisualvm to dynamically attach to running java processes (in later versions of the jdk). this is enabled via some platform specific means of communication which dynamically starts the remote jmx agent within the running jvm (the last bit being the part that is relevant to your question). i don't know off-hand what incantations are necessary, but google should be able to find something about dynamically starting agents in running java vms.
sure enough (and it seems to be related to the Attach API, which is what jvisualvm uses): http://osi.fotap.org/2008/06/27/dynamically-installing-agents-in-java-6/
Edited by: jtahlborn on Nov 6, 2010 9:33 AM
Similar Messages
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How to enable remote debugging for a session other than the current one
Hi all,
I am trying to figure out how to enable remote debugging for a session other than the one I am currently using.
More specifically, we have an application that is making database calls to Oracle 11gR2. Something is causing an exception during this invocation. My system is currently not set up to recompile said application, so I can't just add the debug call to the code and recompile. Therefore I would like to be able to log into the database (as sys, if necessary) and invoke dbms_debug_jdwp.connect_tcp on the desired session.
The docs indicate that I should be able to do so:
dbms_debug_jdwp.connect_tcp(
host IN VARCHAR2,
port IN VARCHAR2,
session_id IN PLS_INTEGER := NULL,
session_serial IN PLS_INTEGER := NULL,
debug_role IN VARCHAR2 := NULL,
debug_role_pwd IN VARCHAR2 := NULL,
option_flags IN PLS_INTEGER := 0,
extensions_cmd_set IN PLS_INTEGER := 128);
But when I try (even as sys), I get the following:
exec dbms_debug_jdwp.connect_tcp('1.2.3.4',5678,<session id>,<session serial>);ORA-00022: invalid session ID; access denied
ORA-06512: at "SYS.DBMS_DEBUG_JDWP", line 68
ORA-06512: at line 1
00022. 00000 - "invalid session ID; access denied"
*Cause: Either the session specified does not exist or the caller
does not have the privilege to access it.
*Action: Specify a valid session ID that you have privilege to access,
that is either you own it or you have the CHANGE_USER privilege.
I've tried granting the 'BECOME USER' privilege for the relevant users, but that didn't help. I read something about having to set some kind of ACL as of 11gR1, but the reference documentation was very confusing.
Would someone be able to point me in the right direction? Is this even possible, or did I misread the documentation?Interesting deduction, that would be very useful indeed. I hate recompiling just to add the debug call, and it can't be done in our production environment. But it seems unlikely to me it would be implemented this way.
I would cross-post this in the SQL AND PL/SQL forum though, as this is really a database issue, not with the SQL Developer tool. Do add the links to the other posts in each.
Regards,
K. -
How can I enable remote debug in weblogic to use with Rational RSA IDE?
How can I enable the remote debugging technique so that I can work with my IDE.
I use RSA by IBM as the IDE
What should be the changes in the setdomainenv or startweblogic?
I use 10.3
Please help.. ur help is appreciable...Hi,
I did not make any console adjustments for debugging on my WebLogic 10.3.2.0 - however I am running in development mode on an "adminServer" (an option during the install)
In the console there is a debug setup page - that seems to have no effect for me (I can always debug) - so either it is a combination of development mode and/or the startWeblogic script from the Eclipse plugin.
However, these debug settings are likely for debugging into the server - you only want to debug your own app code right?
On the console page goto
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servers | AdminServer | configuration-debug | expand weblogic
I see...
"Use this page to define debug settings for this server.
Debug settings for this Server
EnableDisableClear Showing 1 to 2 of 2 Previous Next
Debug Scopes and Attributes State
default Disabled
weblogic Disabled
EnableDisableClear Showing 1 to 2 of 2 Previous Next
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You will see the following
10-Dec-2009 11:53:46 o'clock AM EST> <Warning> <Management> <BEA-141239> <The non-dynamic attribute DebugAbbreviation on weblogic.management.configuration.ServerDebugMBeanImpl@47a32e1b([base_domain]/Servers[AdminServer]/ServerDebug[AdminServer]) has been changed. This may require redeploying or rebooting configured entities>
<10-Dec-2009 11:53:46 o'clock AM EST> <Warning> <Management> <BEA-141238> <A non-dynamic change has been made which affects the server AdminServer. This server must be rebooted in order to consume this change.>
<10-Dec-2009 11:53:46 o'clock AM EST> <Warning> <netuix> <BEA-423420> <Redirect is executed in begin or refresh action. Redirect url is /console/console.portal?_nfpb=true&_pageLabel=ServerDebugPage.>
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Starting WLS with line:
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Listening for transport dt_socket at address: 8453
The server process listening on debug portl 8453 ooks like this
Oracle WebLogic Server 11gR1 PatchSet 1 at localhost [Oracle WebLogic Launch Configuration]
BEA JRockit(R)[localhost:8453]
Thread [Main Thread] (Running)
Daemon Thread [Timer-0] (Running)
Daemon Thread [Timer-1] (Running)
Daemon Thread [[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] (Running)
Daemon Thread [weblogic.time.TimeEventGenerator] (Running)
Daemon Thread [JMAPI event thread] (Running)
Daemon Thread [weblogic.timers.TimerThread] (Running)
Daemon Thread [[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)'] (Running)
Daemon Thread [Thread-7] (Running)
Daemon Thread [ExecuteThread: '0' for queue: 'weblogic.socket.Muxer'] (Running)
Daemon Thread [ExecuteThread: '1' for queue: 'weblogic.socket.Muxer'] (Running)
I hit a breakpoint and see
Daemon Thread [[ACTIVE] ExecuteThread: '13' for queue: 'weblogic.kernel.Default (self-tuning)'] (Suspended (breakpoint at line 56 in ApplicationService))
ApplicationService_5ptwty_Impl(ApplicationService).insertObjects(List<Cell>) line: 56
NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
Method.invoke(Object, Object...) line: 597
AopUtils.invokeJoinpointUsingReflection(Object, Method, Object[]) line: 310
ReflectiveMethodInvocation.invokeJoinpoint() line: 182
ReflectiveMethodInvocation.proceed() line: 149
DelegatingIntroductionInterceptor.doProceed(MethodInvocation) line: 131
DelegatingIntroductionInterceptor.invoke(MethodInvocation) line: 119
ReflectiveMethodInvocation.proceed() line: 171
MethodInvocationVisitorImpl.visit() line: 37
EnvironmentInterceptorCallbackImpl.callback(MethodInvocationVisitor) line: 55
EnvironmentInterceptor.invoke(MethodInvocation) line: 50
ReflectiveMethodInvocation.proceed() line: 171
ExposeInvocationInterceptor.invoke(MethodInvocation) line: 89
ReflectiveMethodInvocation.proceed() line: 171
DelegatingIntroductionInterceptor.doProceed(MethodInvocation) line: 131
DelegatingIntroductionInterceptor.invoke(MethodInvocation) line: 119
ReflectiveMethodInvocation.proceed() line: 171
JdkDynamicAopProxy.invoke(Object, Method, Object[]) line: 204
$Proxy68.insertObjects(List) line: not available
ApplicationService_5ptwty_ApplicationServiceLocalImpl.insertObjects(List<Cell>) line: 306
FrontController.generateGlider(PrintWriter) line: 240
thank you
/michael
http://www.eclipselink.org -
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Hi all,
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I'm also going to log an issue on this so we can start tracking it.
Sorry about the hassle!
=Ryan
[email protected] -
Is it possible to set up IFS to enable remote debugging?
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Thanks,
Roman
nullRoman,
Have you checked the online help in Jdeveloper there is a lot of information on remote debugging.
If you use 1.1 you should check the following which I've copied from the online help:
Configuring Apache JServ for Remote Debugging Java Server Pages
If you are using Apache Jserv, you can debug using either the Oracle Java Virtual Machine (JVM) debugging protocol or the Sun Java Platform Debugging Architecture (JPDA). When you start your remote debugging session, you will have to choose which method to use. Depending on which one you choose, your configuration options are a little different.
Using Oracle's JVM
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Changing the JVM
In the jserv.properties file, set the wrapper.bin parameter to the full path of the JDeveloper JVM (java.exe). For example,
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In jserv.properties, set the wrapper.bin parameter to
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ondemand
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port4000
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quiet
Don't print connection messages. Without this option, connection messages are sent to standard error.
Changing the ApJServerAction entry
In jserv.conf comment out any existing ApJServAction .jsp entries by putting a # at the beginning of the line.]
#ApJServAction .jsp /servlets/org.gjt.jsp.JSPServlet
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ApJServAction .jsp /servlets/oracle.jsp.JspServlet
Adding servlet init parameters
In the servlet init parameters section of the zone.properties file, add the following lines.
servlet.oracle.jsp.JspServlet.initArgs=emit_debuginfo=true
servlet.oracle.jsp.JspServlet.initArgs=jspcompiler=oracle.jdeveloper.jsp.JspOjcCompiler
servlet.oracle.jsp.JspServlet.initArgs=classpath=C:\Program Files\Oracle\JDeveloper\java1.2\jre\lib\rt.jar
Setting the CLASSPATH
In jserv.properties, set wrapper.classpath to
wrapper.classpath=C:\Program Files\Oracle\JDeveloper\jswdk-1.0\lib\servlet.jar
Make sure that the location of ApacheJServ.jar is specified.
wrapper.classpath=C:\Program Files\Apache JServ\ApacheJServ.jar
Comment out the location of jsdk.jar.
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Using JPDA
To use JPDA debugging protocol, you'll need to modify the parameters you send to the JVM, tell the server how to find the JDPA library, and modify the CLASSPATH for Apache JServ.
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Setting parameters
In jserv.properties, set the wrapper.bin parameter to
wrapper.bin.parameters=-classic -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=4000 -Xdebug -Xnoagent -Djava.compiler=NONE
To see the invocation options for JPDA, see Sun VM Invocation Options.
If you are running on Solaris, you may also need to include stdalloc=y as part of the -Xrunjdwp paramater, like the following:
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Adding the JPDA library
In jserv.properties, set wrapper.path to include the location of jdwp.dll. This file is is part of the Java Platform Debugging Architecture.
wrapper.path=D:\jpda\bin
If Apache JServ is running on Unix,
setenv LD_LIBRARY_PATH /home/jpda/lib/sparc:$LD_LIBRARY_PATH
setenv PATH /home/jpda/bin:$PATH
where home/jpda is the path to your JPDA installation. In addition, you will have to pass that environment variable through Apache to the JVM. To do that, in jserv.properties, add the following line:
wrapper.env.copy=LD_LIBRARY_PATH
Setting the CLASSPATH
In jserv.properties, set wrapper.classpath to
wrapper.classpath=C:\Program Files\Oracle\JDeveloper\jswdk-1.0\lib\servlet.jar
Make sure that the location of ApacheJServ.jar is specified.
wrapper.classpath=C:\Program Files\Apache JServ\ApacheJServ.jar
Comment out the location of jsdk.jar.
#wrapper.classpath=C:\jsdk2.0\lib\jsdk.jar
Let me know if this helps -
Remote Debugging w/ Eclipse and Weblogic
Hi,
I'd like to debug my Servlets/EJB's running on a Weblogic 6.1 SP4. My
IDE is Eclipse 2.1
To enable remote debugging I start Weblogic with that additional JVM
options:
-classic -Xdebug -Xnoagent
-Xrunjdwp:transport=dt_socket,address=5000,suspend=y,server=y
and configured my Remote Application in Eclipse accordingly.
The connection successes.
Problem: When I reach my breakpoint, Eclipse pops up an error message:
"Attempting to install a breakpoint in the type
com.xxx....
that has no line number attributes. The breakpoint cannot be
installed. Class files must be generated with the line number
attributes.
Reason:
Absent Line Number Information"
I compiled my sources with enabled debug option.
Any comments and ideas are appreciated.
Cheers,
Jan.
Sorry!
the debug option was NOT enabled (seems that my ant script is too
complex at this stadium...)
Cheers,
Jan.
[email protected] (Jan-Friedrich Mutter) wrote in message news:<[email protected]>...
> Hi,
>
> I'd like to debug my Servlets/EJB's running on a Weblogic 6.1 SP4. My
> IDE is Eclipse 2.1
> To enable remote debugging I start Weblogic with that additional JVM
> options:
>
> -classic -Xdebug -Xnoagent
> -Xrunjdwp:transport=dt_socket,address=5000,suspend=y,server=y
>
> and configured my Remote Application in Eclipse accordingly.
>
> The connection successes.
>
> Problem: When I reach my breakpoint, Eclipse pops up an error message:
> "Attempting to install a breakpoint in the type
> com.xxx....
> that has no line number attributes. The breakpoint cannot be
> installed. Class files must be generated with the line number
> attributes.
> Reason:
> Absent Line Number Information"
>
> I compiled my sources with enabled debug option.
>
> Any comments and ideas are appreciated.
>
> Cheers,
> Jan.
-
Hi all,
I could not find the right place in the forum to log this error. If anyone knows kindly let me know.
The issue is given below :-
I have configured my Eclipse to perform Remote Debugging. I have a Borland Enterprise Server running to which my Eclipse connects at a particular port and
allows me to debug i.e. Step Over, Step Through, Breakpoints etc.
Since the calls between the compents of the server and client are basically corba calls i am not able to see the values of the variables when i step through the
code in the eclipse.
How do i resolve this.
Thanks
RamSorry!
the debug option was NOT enabled (seems that my ant script is too
complex at this stadium...)
Cheers,
Jan.
[email protected] (Jan-Friedrich Mutter) wrote in message news:<[email protected]>...
> Hi,
>
> I'd like to debug my Servlets/EJB's running on a Weblogic 6.1 SP4. My
> IDE is Eclipse 2.1
> To enable remote debugging I start Weblogic with that additional JVM
> options:
>
> -classic -Xdebug -Xnoagent
> -Xrunjdwp:transport=dt_socket,address=5000,suspend=y,server=y
>
> and configured my Remote Application in Eclipse accordingly.
>
> The connection successes.
>
> Problem: When I reach my breakpoint, Eclipse pops up an error message:
> "Attempting to install a breakpoint in the type
> com.xxx....
> that has no line number attributes. The breakpoint cannot be
> installed. Class files must be generated with the line number
> attributes.
> Reason:
> Absent Line Number Information"
>
> I compiled my sources with enabled debug option.
>
> Any comments and ideas are appreciated.
>
> Cheers,
> Jan.
-
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Hi there
Does anyone know how to remote debug an ejb deployed in JBoss using JDeveloper (or perhaps know of a link?)? All I can find is this from Oracle:
http://www.oracle.com/technology/products/jdev/howtos/appservers/debug_in_jboss.html
But the cmd to replace in the $bin\run.bat file to enable remote debugging doesn't exist in my version of JBoss (jboss-4.0.1RC1).
Can anyone shed some light here?
Thanks very much in advance...JonIn run batch file add
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Now I want to debug java code enabling remote debug, however, after I attached to remote server, it is not kicking java code even I put any breakpoints.
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NOTE: You get double points for right answer with my subscription.Hi Ravi,
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VJ -
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Hi,
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I've also configured my project for remote debugging, ensuring the host name and port matches, and trying both "Attach to JDPA" and "Attach to OJVM" (these being the only two options, except for starting a listener, which I don't think will help with a web application).
When I try to debug, though, I get:
Debugger unable to connect to remote process.
Should I be doing something differently?
Thanks much,
AvromI had the delete key quit working after accidentally pressing a key sequent that included the delete key. I don't know what keys were involved, but the delete key from that point on did nothing.
I am running JDeveloper 10.1.3.0.4 on Window XP.
To resolve the problem, I set the keyboard Accelerators back to 'Default' in JDeveloper.
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Hello,
I am wondering how to enable tracing in remote
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2) run till the breakpoint.
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in the "tracing ... include" list.
I would appreciate any help,
Vadim
P.S. 1) Thanks for answering my previous question
about customizing ant. I figured how to do it earlier
on my own and wanted to post a reply but
couldn't do it. The system wouldn't find the
topic.
2) As far as JB concerned, the whole process of remote
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If you like to contact me privatly: [email protected]
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Hello!
I have some problem. I have create a JVM in C++ program usin JNI. Parameters (reat from conf file):
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-Xrunjdwp:transport=dt_socket,server=y,address=5007,suspend=n
-Djava.class.path=jar_1;jar_2;...;jar_n
JVM is created successfullly. Then I try attach to JVM from IDEA by remote debug with parameters:
-Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5007
After this I have get the next error: "Unable to open debugger port: java.net.SocketException Connection reset". And my program is shut down. I can't solve this problem. Maybe anybody have some ideas. Thanks.Try to debug the next java cod:
public class TestClass {
public static void FileCrt(String str)
DataOutputStream OutStream;
String sOut;
sOut = new String(str);
try
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OutStream.writeBytes(sOut);
OutStream.close();
catch (IOException e)
e.printStackTrace();
public static void main(String[] args)
FileCrt("Test");
I have created the test.jar and run it by the command:
java -cp test.jar -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,address=8787,suspend=y testpackage.TestClass
Then I try to connect to JVM by remote debuger (-Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8787) and get exception "Unable to open debugger port java.net.ConnectException". What's the problem? -
JVM options for remote debugging
I'm run Tomcat 5.0.28 using service wrapper and i need help with set the required JVM options for remote debugging from ECLIPSE 3.0.0.
Where can I find a complete list of available JVM options for WLS?
For example -Dweblogic.security.SSL.protocolVersion is not listed anywhere
That is NOT a JVM options as I just explained in your other thread - see that thread for details.
JVM options
That "-Dxxx" syntax means you are specifying a system property on the Java command-line when launching Java.
That property can now be accessed in the Java app
You can make up and use ANYTHING you want when you write your own apps - those command line entries will just get added to the standard/default System properties as I explain in your other thread.
Consult the WebLogic documentation (or onliine help if WLS has such a thing) for info on the system properties that have been defined for WLS. -
Advantages of using Oracle JVM over JPDA for Remote Debugging?
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'Error while determining classes contained in jsch-1.29_minimalClassListAndTCD
mper.java
Exception oracle.aurora.sqljdecl.ParseException: Encountered "-" at line 14
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"extends" ...
"implements" ...
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jsch-0.1.29_minimalClassListAndTCDumper.java: creation
exiting : Failures occurred during processing
Kuassi, I have looked at a few of your posts where you make mention of a file titled 'Settings_os.properties'. I see no such file in my Oracle installation. What am I missing here ? -
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Developer toolbar has "Tools" but no "Settings therein.
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in desperation I installed Firefox Developer edition because I was using Firefox Portable (34.0.5) as my main development engine on sticks & fast external HDDs..
Hmmmmmmm
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Audio streaming with iWeb without advancing a page?
I set up my website with five menu buttons on the Welcome page which are linked to five different mp3 audio files. I published the public_html folder to a non .mac host. If you go to my website and click on an audio menu button on the Welcome page th