Java 1.4 Debugger Not Working?

There’s a bug that I’d encountered running the debugger in JDK 1.4.2 ages ago that reared it’s head again today. I’ve been working on a system that uses this old JDK and thought I’d note the solution here in case I ever came across it again.

The problem is encountered when the JVM is launched in debug mode and is reported as:

FATAL ERROR in native method: No transports initialized Transport dt_socket failed to initialize, rc = 509.
Apparently, from looking at reports of this on the Web, this can happen on any operating system. I encountered it on a Windows XP machine and found that the simplest fix was to copy the following two files from the JAVA_HOME/jre/bin folder, to my c:/windows/system32 folder:

dt_socket.dll dt_shmem.dll
You can also fix this by putting the JRE bin folder at the start of your PATH environment variable. For a more detailed discussion of the problem take a look at this thread on the Sun forums web site.

Tags: Debug, Error, Java, Socket

This entry was posted on May 13, 2010, 3:55 pm and is filed under Development. You can follow any responses to this entry through RSS 2.0. You can skip to the end and leave a response. Pinging is currently not allowed.

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Java 1.4 Debugger Not Working?

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