How to start debug mode from command prompt for apache tomcat server?

Question

I want to start debug mode for my application. But I need to start the debug mode from command prompt. Is it possible ? And will the procedure vary between tomcat 5.5 to tomcat 6.?

possible duplicate of [Start tomcat 6 in debug mode?](http://stackoverflow.com/questions/5458212/start-tomcat-6-in-debug-mode) — Makoto, May 24 '13 at 05:47

score 129 · Answer 1 · edited Jun 25 '19 at 19:46

129

On windows

$ catalina.bat jpda start

On Linux/Unix

$ catalina.sh jpda start

More info ----> https://cwiki.apache.org/confluence/display/TOMCAT/Developing

edited Jun 25 '19 at 19:46

Brian J. Miller

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answered May 22 '13 at 10:24

Mohammad Adil

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Thanks, this helped me to setup the debug option in `startup.sh`. Editing the last line in `tomcat/bin/startup.sh` to `exec "$PRGDIR"/"$EXECUTABLE" jpda start "$@"`. I always forget to start in debug mode and I can save a 5minute restart. – TomasZ. Dec 22 '17 at 08:01

score 57 · Answer 2 · answered Oct 04 '13 at 10:35

57

For windows first set variables:

set JPDA_ADDRESS=8000
set JPDA_TRANSPORT=dt_socket

to start server in debug mode:

%TOMCAT_HOME%/bin/catalina.bat jpda start

For unix first export variables:

export JPDA_ADDRESS=8000
export JPDA_TRANSPORT=dt_socket

and to start server in debug mode:

%TOMCAT_HOME%/bin/catalina.sh jpda start

answered Oct 04 '13 at 10:35

krzysiek.ste

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um yes, although 8000 and dt_socket are mentioned as defaults in catalina.bat, you actually have to set them as in the above post :/ – hello_earth Jun 24 '18 at 15:49
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to the point answer and It worked for me +1. saved my day – Joginder Malik Jun 24 '20 at 08:34

score 27 · Answer 3 · edited Jul 17 '17 at 16:51

From your IDE, create a remote debug configuration, configure it for the default JPDA Tomcat port which is port 8000.

From the command line:

Linux:

cd apache-tomcat/bin
export JPDA_SUSPEND=y
./catalina.sh jpda run

Windows:

cd apache-tomcat\bin
set JPDA_SUSPEND=y
catalina.bat jpda run

Execute the remote debug configuration from your IDE, and Tomcat will start running and you are now able to set breakpoints in the IDE.

Note:

The JPDA_SUSPEND=y line is optional, it is useful if you want that Apache Tomcat doesn't start its execution until step 3 is completed, useful if you want to troubleshoot application initialization issues.

score 15 · Answer 4 · edited Oct 01 '20 at 22:12

15

A short answer is to add the following options when the JVM is started.

JAVA_OPTS=" $JAVA_OPTS -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8080"

edited Oct 01 '20 at 22:12

Jahan Zinedine

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answered Apr 05 '16 at 07:48

Marcel Zebrowski

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When using JAVA_OPTS -Xdebug you need not start catalina with jpda. Otherwise you may end up with this `ERROR: Cannot load this JVM TI agent twice, check your java command line for duplicate jdwp options.` – lnarasimhan Nov 17 '17 at 21:40

Konstantin Yovkov · Answer 5 · 2013-05-22T10:36:04.510

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First, Navigate to the TOMCAT-HOME/bin directory.

Then, Execute the following in the command-line:

catalina.bat jpda start

If the Tomcat server is running under Linux, just invoke the catalina.sh program

catalina.sh jpda start

It's the same for Tomcat 5.5 and Tomcat 6

edited May 22 '13 at 10:36

answered May 22 '13 at 10:22

Konstantin Yovkov

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Can you tell me the equivalent of Tomcat 7.0? – RAS May 19 '14 at 13:45

score 3 · Answer 6 · answered Mar 08 '18 at 05:31

These instructions worked for me on apache-tomcat-8.5.20 on mac os 10.13.3 using jdk1.8.0_152:

$ cd /path/to/apache-tomcat-8.5.20/bin
$ export JPDA_ADDRESS="localhost:12321"
$ ./catalina.sh jpda run

Now connect to port 12321 from IntelliJ/Eclipse and enjoy remote debugging.

TharinduKetipe · Answer 7 · 2018-08-06T07:26:24.960

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There are two ways to run tomcat in debug mode

Using jdpa run
Using JAVA_OPTS

First setup the environment. Then start the server using following commands.

export JPDA_ADDRESS=8000

export JPDA_TRANSPORT=dt_socket

%TOMCAT_HOME%/bin/catalina.sh jpda start

sudo catalina.sh jpda start

refer this article for more information this is clearly define it

edited Aug 06 '18 at 07:26

answered May 21 '15 at 09:26

TharinduKetipe

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score 1 · Answer 8 · answered Oct 23 '19 at 17:04

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If you're wanting to do this via powershell on windows this worked for me

$env:JPDA_SUSPEND="y"

$env:JPDA_TRANSPORT="dt_socket"

/path/to/tomcat/bin/catalina.bat jpda start

answered Oct 23 '19 at 17:04

MarkyMarksFunkyBunch

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score 0 · Answer 9 · answered Apr 15 '14 at 06:26

Inside catalina.bat set the port on which you wish to start the debugger

if not "%JPDA_ADDRESS%" == "" goto gotJpdaAddress
set JPDA_ADDRESS=9001

Then you can simply start the debugger with

catalina.bat jpda

Now from Eclipse or IDEA select remote debugging and start start debugging by connecting to port 9001.

How to start debug mode from command prompt for apache tomcat server?

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