You are viewing a plain text version of this content. The canonical link for it is here.

Posted to users@tomcat.apache.org by "Michalski, Rafał" <RM...@eragsm.pl> on 2001/04/03 16:00:04 UTC

attaching jdb

I cannot attach the standart debugger to Tomcat.
In tomcat.sh, the all important line reads:

  $JAVACMD -Xdebug -Xnoagent -Djava.compiler=NONE
-Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n $TOMCAT_OPTS
-Dtomcat.home=${TOMCAT_HOME}  org.apache.tomcat.startup.Tomcat "$@" &

Trying to attach with jdb

  jdb -attach 8000

I get the following error:


  Internal exception:  java.lang.NullPointerException
	at
com.sun.tools.example.debug.tty.VMConnection.open(VMConnection.java:138)
	at com.sun.tools.example.debug.tty.Env.init(Env.java:68)
	at com.sun.tools.example.debug.tty.TTY.main(TTY.java:923)

With the default suspend=y option,
I _can_ attach the debugger.

I would be partially satisfied 
knowing whether this is a Tomcat problem
or a general problem with remote
debugging in Java 1.3.
Not working, for example.


Greats 
Rafal.

 @^^    -      
<     // \\     
  \___/ 
   /||\ 
  ^ ^^ ^