Application Client Debugging

When the appclient script executes the java command to run the Application Client Container (ACC), which in turn runs the client, it includes on the command line the value of the VMARGS environment variable. You can set this variable to any suitable value. For example:

VMARGS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8118

The following example also works:

set VMARGS=-Xdebug -agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=8118

For debugging an application client, you should set suspend to y so you can connect the debugger to the client before any code has actually executed. Otherwise, the client may start running and execute past the point you want to examine.

You should use different ports for the server and client if you are debugging both concurrently. For details about setting the port, see JPDA Options.

You can also include JVM options such as -Xdebug and -Xrunjwdp in the appclient script directly. For information about the appclient script, see Oracle GlassFish Server 3.1-3.1.1 Reference Manual.