JDWP exit error AGENT_ERROR_TRANSPORT_INIT(197): No transports initialized [../../../src/share/back/debugInit.c:690]

问题

I have been trying to run with JRebel this configuration:

Here is my output:

c:\JBOSS\jboss-portal-2.7.2\bin\run.bat -c default

c:\JBOSS\jboss-portal-2.7.2\bin>set JAVA_OPTS=-Dhttp.proxyHost=188.173.32.78 -Dhttp.proxyPort=3128 -DproxySet=true 
===============================================================================

  JBoss Bootstrap Environment

  JBOSS_HOME: c:\JBOSS\jboss-portal-2.7.2

  JAVA: C:\Program Files\Java\jdk1.6.0_25\bin\java

  JAVA_OPTS: -Xdebug -Xrunjdwp:transport=dt_socket,address=8787,server=y,suspend=n -Dhttp.proxyHost=188.173.32.78 -Dhttp.proxyPort=3128 -DproxySet=true -Dprogram.name=run.bat -server -Xms256m -Xmx512m -XX:MaxPermSize=256m -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000

  CLASSPATH: C:\Program Files\Java\jdk1.6.0_25\lib\tools.jar;c:\JBOSS\jboss-portal-2.7.2\bin\run.jar

===============================================================================

[2012-07-16 12:32:53,968] Artifact app-ear:ear: Artifact is being deployed, please wait...
[2012-07-16 12:32:53,972] Artifact my-portlet:war: Artifact is being deployed, please wait...
Connected to server
[2012-07-16 12:32:54,007] Artifact app-ear:ear: Artifact is deployed successfully
FATAL ERROR in native method: JDWP No transports initialized, jvmtiError=AGENT_ERROR_TRANSPORT_INIT(197)
ERROR: transport error 202: bind failed: Address already in use
ERROR: JDWP Transport dt_socket failed to initialize, TRANSPORT_INIT(510)
JDWP exit error AGENT_ERROR_TRANSPORT_INIT(197): No transports initialized [../../../src/share/back/debugInit.c:690]
Disconnected from server

回答1:

Notice the following start up parameter in your post.

-Xrunjdwp:transport=dt_socket,address=8787,server=y,suspend=n

There must be some other process occupied the 8787 port.

回答2:

The 8787 port is already in use. If the 8787 port in use by another application, you need to select a different port number in file run.bat For example, 18787

回答3:

ERROR: transport error 202: bind failed: Address already in use
ERROR: JDWP Transport dt_socket failed to initialize, TRANSPORT_INIT(510) from "JAVA_OPTS: address=8787"

You set Address 8787

Find the PID
```
netstat -ap | grep 8787
```
If you still see the PID with the above command, then there are child PIDs. To find the child PIDs
```
pstree -p 
```
and
```
pstree -p  | grep previousPID
```
Find the groupPID of the PID
```
ps x -o "%r %p %y %x %c" 
```
Kill the found PID
```
kill -TERM -groupPID 
```

回答4:

Usually this error occurs when the port is already in use. Based on my experience, this usually happen when the server didn't started successfully making the server still running in the process. If you're using windows, you can check out your Task Manager (Ctrl+Shift+Esc) and then look for "java.exe" process. Terminate it and try to start your server again.

回答5:

This problem occurs whenever the port required to run your server is already in use by some other application. Since the port number 8080 which i used for my jetty server was already in use,it gave me this error so I just changed the port from 8080 to 7070 and it worked for me..