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I am getting the following message when I try to remote debug a java application through eclipse. "Failed to connect to remote VM. Connection refused." What could be the error?

softwarematter
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5 Answers5

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You need to invoke the process to be debugged with the appropriate options e.g.

-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=1044

(substitute with the appropriate port if necessary) and it sounds like the VM isn't listening on the configured port. You can use netstat /a to confirm if the VM is listening on that port (or telnet)

Brian Agnew
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  • When I tried netstat /a i got: TCP DEV-MACHINE2:8787 localhost:1261 ESTABLISHED This is the only entry for the port number 8787 which I an using. – softwarematter Nov 10 '09 at 18:38
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For client debugging, I came across the same issue

URL -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=4081

Changing the port number solved the issue.

oers
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rajeshkumar.kondapalli
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do you have port 8000, or whatever port you have configured for remote connections open on your firewall?

z -
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The remote application needs to be started first. Did you add the arguments to the target remote app so it will accept a debugging connection/

Kelly S. French
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  • Sometimes the port hasn't been released from the last time it was ran. On Windows do a 'netstat -a' and look for the port the remote app is using to listen for debug connections. If it is still open, you won't be able to open a remote debug session. Close the port/socket or if it comes down to it, change the port used. Hopefully the first socket eventually releases before you lock up the second. – Kelly S. French Nov 11 '09 at 15:35
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Make sure your JVM was started with these options

-Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n

and that port 8000 is free

Murali VP
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