Neither the JAVA_HOME nor the JRE_HOME environment variable is defined

xpucto · 04-24-2008, 07:19 AM

Hi!

I have just installed jre-1_5_0 that I need for the chandler project http://chandlerproject.org/.
when I try to start it, I get the message:

Quote:

Neither the JAVA_HOME nor the JRE_HOME environment variable is defined
At least one of these environment variable is needed to run this program

But I did defined those 2 variables in /etc/profile

Quote:

JAVA_HOME=/usr/java/jre1.5.0_15
JRE_HOME=/usr/java/jre1.5.0_15

export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE INPUTRC JRE_HOME JAVA_HOME

the problem is that it works when I use su but not when I use sudo. How can get sudo the value of those variables?

duryodhan · 04-24-2008, 07:41 AM

what does $JAVA_HOME say before running the program?

Also in most programs, you can create a symlink to your jre and it will work.

For e.g in my eclipse.. in the dir which contains eclipse I have created a symlink to my actual jre (in /opt/jre1.6/ ) with the name jre.

ln -s /opt/jre1.6/ ~/eclipse/jre

xpucto · 04-25-2008, 05:10 AM

Quote:

Originally Posted by duryodhan

what does $JAVA_HOME say before running the program?

Also in most programs, you can create a symlink to your jre and it will work.

For e.g in my eclipse.. in the dir which contains eclipse I have created a symlink to my actual jre (in /opt/jre1.6/ ) with the name jre.

ln -s /opt/jre1.6/ ~/eclipse/jre

well $JAVA_HOME and JAVA_JRE are enpty under sudo.

I made a link in the bin chandler's bin directory

Code:

sudo ln -s /usr/java/jre1.5.0_15/ jre

but it doesn't help.

Agrouf · 04-25-2008, 05:17 AM

Either the two variables are unset after, or the /etc/profile is not executed at all.

duryodhan · 04-25-2008, 08:08 AM

Quote:

sudo ln -s /usr/java/jre1.5.0_15/ jre

are you running as root? why did you do sudo ?

what does echo $JAVA_HOME , echo $JRE_HOME say as normal user?

xpucto · 04-28-2008, 06:02 AM

echo $JAVA_HOME and echo $JRE_HOME give me
/usr/java/jre1.5.0_15/ jre
as normal and as root user. The 2 variables are empty only whenI use sudo. Of course I still can use root, but I would rather user sudo. And other users with sudo-permissions don't have the root's password.

Jay_Drummond · 04-28-2008, 06:38 AM

On RedHat you can add files to your /etc/profile.d directory.

add two files something like these:
javaProfile.csh
javaProfile.sh

the file javaProfile.sh contains (update for your directory structure):

Code:

# Java initialization script (sh)
if [ -z "$JAVA_HOME" ] ; then
        JAVA_HOME="/usr/java/jdk_latest"
        PATH=$PATH:"/usr/java/jdk_latest/bin"
fi
export JAVA_HOME
export PATH
#javaProfile.sh

the file javaProfile.csh contains (update for your directory structure):

Code:

# Java initialization script (csh)
if ( $?JAVA_HOME ) then
         exit
endif
setenv PATH $PATH:/usr/java/jdk_latest/bin
setenv JAVA_HOME /usr/java/jdk_latest

These files are owned by root:root and permissions are set to 755

Gkarthikeyan007 · 06-21-2010, 05:30 AM

Hey All! I have got a sloution

As we want to run Tomcat by sudo User just make an edit at only one line in startup.sh & shutdown.sh

Details:

export JAVA_HOME=/usr/java/jdk

Add the above line at the top on both of your scripts

Thats it!

Zeyd · 04-21-2020, 02:26 PM

Quote:

Originally Posted by Gkarthikeyan007

Hey All! I have got a sloution

As we want to run Tomcat by sudo User just make an edit at only one line in startup.sh & shutdown.sh

Details:

export JAVA_HOME=/usr/java/jdk

Add the above line at the top on both of your scripts

Thats it!

Your solution works like a charm!