JAVA_HOME and PATH variables are required for
the operating system to find the required Java programs and utilities.
Ensure the required Java version is installed on all nodes in your topology.
If Java is not installed on your install system, refer to the appropriate documentation to
install Java before setting JAVA_HOME and PATH. For
example, to install IBM JDK (Windows or Linux), see the IBM JDK online documentation.
To set Java variables in Linux:
To set Java variables on Linux, complete the following steps:
-
Download or save the appropriate JDK version for Linux.
Important: You can download the JDK from Passport Advantage or Fix Central or save it
from the disk.
-
Extract the compressed file to the required location.
-
Set JAVA_HOME using the syntax
export JAVA_HOME=path to
JDK
. For example, export JAVA_HOME=
/usr/java/jdk1.7.0_05/.
-
Set PATH by using the syntax
export PATH=${PATH}:path to
the JDK bin
. For example, export
PATH=${PATH}:/usr/java/jdk1.7.0_05/bin
Attention: When you add the bin directory for the IBM JDK to the
PATH environment variable, ensure that you add it before any other directory
currently listed in the PATH value that might have a Java executable. Also, if
the directory that you are adding to the PATH or setting as
JAVA_HOME has a space in the path, either contain the path in quotes or escape
the space by preceding the path with \.
-
Verify the settings by using the following commands:
echo $JAVA_HOME
echo $PATH
The output must display the JAVA_HOME and PATH that you
set.