Using JPDA with Oracle9i Application Server for Servlet Debugging

To use JPDA debugging protocol, you'll need to modify the parameters you send to the JVM, change the ApJServerAction entry, tell the server how to find the JDPA library, add servlet init parameters, and modify the CLASSPATH for Oracle9i Application Server (9iAS).

These changes must be made on the computer that is hosting 9iAS. You will need administrator or root permission to make these changes.

Setting parameters

In jserv.properties, set the wrapper.bin parameter to:

wrapper.bin.parameters=-classic 
-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=4000 
-Xdebug 
-Xnoagent 
-Djava.compiler=NONE

To see the invocation options for JPDA, see Sun VM Invocation Options.

If you are running on Solaris, you may also need to include stdalloc=y as part of the -Xrunjdwp paramater, like the following:

wrapper.bin.parameters=-classic 
-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=4000,stdalloc=y 
-Xdebug 
-Xnoagent 
-Djava.compiler=NONE

Adding the JPDA library

If 9iAS is running on Windows, set wrapper.path jserv.properties to include the location of jdwp.dll (This file is is part of the Java Platform Debugging Architecture):
```
wrapper.path=D:\jpda\bin
```
If 9iAS is running on UNIX:
```
setenv LD_LIBRARY_PATH /home/jpda/lib/sparc:$LD_LIBRARY_PATH
setenv PATH /home/jpda/bin:$PATH
```
where /home/jpda is the path to your JPDA installation. In addition, you will have to pass that environment variable through Apache to the JVM. To do that, in jserv.properties, add the following line:
```
 wrapper.env.copy=LD_LIBRARY_PATH 
```

Setting the CLASSPATH

In jserv.properties, set wrapper.classpath to:

wrapper.classpath=C:/Program Files/Oracle/JDeveloper 3.2/jswdk-1.0/lib/servlet.jar

Make sure that the location of ApacheJServ.jar is specified.

wrapper.classpath=C:/Program Files/Apache JServ 1.1b3/ApacheJServ.jar

Comment out the location of jsdk.jar:

#wrapper.classpath=C:/jsdk2.0/lib/jsdk.jar

External Links:
Sun VM Invocation Options