Java program doesn't start on Unix machine

Question

When I start Java application from command line on AIX 6.1 machine the application just doesn't start. All I get is a blinking cursor, hitting CTRL+C doesn't help. It seats in the list of processes all the time. Even running the following command produces the same result so I don't think it is program related.

java -version

Cursor is blinking on the next line and nothing happens. When I open second session and type

ps -ef

I get the following:

 tomcat 32243914 31850686   0 13:50:27  pts/7  0:00 -ksh
 tomcat  5439538 32243914   1 13:50:50  pts/7  0:00 /usr/java6/jre/bin/java -version

On Windows my program runs just fine. So I think it is JRE or Unix related.

I'm not a Unix expert so I would appreciate any suggestions on how to trouble shoot this.

Which flavour of *nix? How did you install Java? Any other output you can provide? — Nico Huysamen
– Nico Huysamen, Commented Aug 25, 2011 at 13:39
Without code we are just a bunch of people poking you with a stick ... — Johann du Toit
– Johann du Toit, Commented Aug 25, 2011 at 13:41
Do you mean first there's no java process but after running java -version there is one, even after execution of that command ended? If so, we need more information. — Thomas
– Thomas, Commented Aug 25, 2011 at 13:43
The app isn't a daemon is it? Should it have a UI? Are you running it over a ssh session? If so have you configured X to send the display to your machine? What does the app do? What does it do on windows? — vickirk
– vickirk, Commented Aug 25, 2011 at 14:09
Well, I gave an example with running java -version. There is no point in having code here. — Dima
– Dima, Commented Aug 25, 2011 at 18:08

romje · Accepted Answer · 2012-01-06 14:05:57Z

1

sounds strange , it seems that your process does not give hands back... No return Do you have top binary installed on your AIX machine ? Could you check that this machine follows the long list of requirements to run the java binary ? You may find useful information on the IBM java package webpage I guess...

Do you have lsof binaries or any other standard debuging tool ? lsof would point to any problem related to your AIX machine

HTH Jerome

answered Jan 6, 2012 at 14:05

romje

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1 Comment

user1228 Over a year ago

Can you please edit this so that it is more of an answer and less interrogative? We require answers to be answers; interaction with the OP for more information are usually restricted to comments (which you will need more rep to leave).

Brian Knoblauch · Accepted Answer · 2014-11-14 21:18:54Z

0

We have an intermittent similar issue with Java on Solaris. Sometimes rebooting the machine helps. Other times we have to remove the .java file from the user's home directory. Very random and annoying. The box can be up for months before it happens, or mere hours...

answered Nov 14, 2014 at 21:18

Brian Knoblauch

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