Problems can happen in the best of families, and software is no exception. If you see an error when you start the server, or when you deploy your own JBoss ESB service what should you do? Here's a set of steps that you should take: an easy way to start is to try to reconstruct the steps that you took before the error occurred. It may be that the root cause of the error was a configuration change or some other form of action that you performed. Remember that if you made a copy of the server profile before you started making changes, you can easily restore it.
If you can't easily identify or remember the cause of the error, then it's time to do some investigation of the logs.
First, examine the server log. Look at the messages that were displayed before or after the error occurred. What sort of things might be in the log? The following are a few examples:
.jar
, or an incomplete deployment. The root cause of this may be that the CLASSPATH
environment is not set correctly. Note that, in order to start the server, you don't have to have CLASSPATH
pre-defined. The start-up scripts will do it for you.PATH
environment variable is not set correctly. Try to verify that you can invoke the Java runtime from the command line and check its version (java -version
).jboss-esb.xml
file for errors.If the error that you see doesn't make sense to you, you can always use a search engine to query pertinent information about your error, or ask a question on the user forum and attach your server.log
to the post.
Before we move on, it's time to see what you've learned. Pencils ready? Let's begin!