Error Message :
Unable to launch the Application
When trying to open the Applications Manager client from a saved Client.jnlp file, it fails to start up at all or error "Unable to launch the Application" is seen. Visiting the Java client Intro.html page results in a 404 error or Unable to connect error. Investigation
Running a "ps -ef | grep defunct" command shows the apache process as <defunct> similar to the example below:
apache 13469 13466 0 12:58 ? 00:00:00 apache <defunct>
On Unix and Unix-like computer operating systems, a defunct process or zombie process is a process that has completed execution (via the exit system call) but still has an entry in the process table. It is a process in the "Terminated state".