weblogic fail to start: Address already in use error - eclipse

Question

I have a test application that I created to start learn weblogic with Eclipse .
yesterday the jsp page was working well when I run as / on server , I got the basic page that I created .
but today I have an error message :
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:750]
in the browser I got this :
Error 404--Not Found
From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:
10.4.5 404 Not Found
The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.
and an other time I got this on console :
weblogic.application.ModuleException: null
null
at weblogic.servlet.internal.WebAppModule.createModuleException(WebAppModule.java:1824)
at weblogic.servlet.internal.WebAppModule.init(WebAppModule.java:270)
at weblogic.servlet.internal.WebAppModule.init(WebAppModule.java:682)
at weblogic.application.internal.flow.ScopedModuleDriver.init(ScopedModuleDriver.java:162)
at weblogic.application.internal.ExtensibleModuleWrapper.init(ExtensibleModuleWrapper.java:98)
Truncated. see log file for complete stacktrace
can you explain to me what I miss , when I start the server it has the status started . thank you I can add any information .

Answer 1

The most probable cause is server running in debug mode and having the same debug port as an existing server on same machine.
If you have multiple domains configured for each domain running in development mode on the same machine make sure DEBUG_PORT in the setDomainEnv script has different values.
If you have multiple managed servers on the same domain and same machine, create a separate startManagedWeblogic script to start your managed servers and set the Debug Port in that script.
If you use Node Manager to start your managed servers, make sure you have the following lines set in your nodemanager.properties file, otherwise etDomainEnv.sh won't be executed:
StartScriptEnabled=true
StopScriptEnabled=true
This way, if you start the Managed Server via the Admin Console, setDomainEnv.sh will get called.
Then, you can modify the WebLogic domain script setDomainEnv.sh to set the proper DEBUG_PORT value according to the server name that needs to be started:
Use your favourite editor to change the setDomainEnv.sh file
You should find the following lines already :
if [ "${SERVER_NAME}" = "" ] ; then
SERVER_NAME="AdminServer"
export SERVER_NAME
fi
The same way, you can add :
if [ "${SERVER_NAME}" = "ManagedServer1" ] ; then
DEBUG_PORT="8454"
export DEBUG_PORT
fi
if [ "${SERVER_NAME}" = "ManagedServer2" ] ; then
DEBUG_PORT="8455"
export DEBUG_PORT
fi