I'm not quite sure how I got into this mess, but for some reason I'm not able to change the current version of Java using alternatives. I can run alternatives --config java and type my selection but when I echo the version number for either java or javac, it spits back out 1.5 every time (despite alternatives showing the current version is 1.6). The server I'm working with is running RHEL5, by the way.
I have verified that the paths used in alternatives are pointing to the correct directories. Here's some output from my session:
[brilewis@myserver]$ sudo /usr/sbin/update-alternatives --config java
There are 3 programs which provide 'java'.
Selection Command
** 1 /usr/lib/jvm/jre-1.4.2-gcj/bin/java
+ 2 /usr/java/jdk1.5.0_10/bin/java
3 /usr/java/jdk1.6.0_16/bin/javaEnter to keep the current selection[+], or type selection number: 3
[brilewis@myserver]$ java -version
java version "1.5.0_10" Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_10-b03) Java HotSpot(TM) Server VM (build 1.5.0_10-b03, mixed mode)
[brilewis@myserver]$ sudo /usr/sbin/update-alternatives --config java
There are 3 programs which provide 'java'.
Selection Command
** 1 /usr/lib/jvm/jre-1.4.2-gcj/bin/java
2 /usr/java/jdk1.5.0_10/bin/java
+ 3 /usr/java/jdk1.6.0_16/bin/javaEnter to keep the current selection[+], or type selection number:
UPDATE: The following is the output of echo $PATH
:
/usr/java/jdk1.5.0_10/bin:/usr/local/apache-ant-1.7.1/bin:/usr/local/apache-tomcat-6.0.24:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/usr/NX/bin:/home/brilewis/bin
UPDATE (4/26/10): I followed Bert's suggestion and removed JAVA_HOME from the PATH environment var in /etc/profile. After doing this, I was able to use alternatives to change the version of Java. The only problem is that when I try to run javac
, I get "-bash: javac: command not found". This does not happen when the version is set to 1.5.
For Oracle Java 6u30, once you've installed their RPMs you can configure alternatives:
/usr/sbin/alternatives --install "/usr/bin/java" "java" "/usr/java/default/bin/java" 2 \
--slave /usr/bin/javac javac /usr/java/default/bin/javac \
--slave /usr/bin/javadoc javadoc /usr/java/default/bin/javadoc \
--slave /usr/bin/jar jar /usr/java/default/bin/jar \
--slave /usr/bin/keytool keytool /usr/java/default/bin/keytool \
--slave /usr/bin/orbd orbd /usr/java/default/bin/orbd \
--slave /usr/bin/pack200 pack200 /usr/java/default/bin/pack200 \
--slave /usr/bin/rmid rmid /usr/java/default/bin/rmid \
--slave /usr/bin/rmiregistry rmiregistry /usr/java/default/bin/rmiregistry \
--slave /usr/bin/servertool servertool /usr/java/default/bin/servertool \
--slave /usr/bin/tnameserv tnameserv /usr/java/default/bin/tnameserv \
--slave /usr/bin/unpack200 unpack200 /usr/java/default/bin/unpack200 \
--slave /usr/share/man/man1/java.1.gz java.1.gz /usr/java/default/man/man1/java.1.gz \
--slave /usr/share/man/man1/keytool.1.gz keytool.1.gz /usr/java/default/man/man1/keytool.1.gz \
--slave /usr/share/man/man1/orbd.1.gz orbd.1.gz /usr/java/default/man/man1/orbd.1.gz \
--slave /usr/share/man/man1/pack200.1.gz pack200.1.gz /usr/java/default/man/man1/pack200.1.gz \
--slave /usr/share/man/man1/rmid.1.gz rmid.1.gz /usr/java/default/man/man1/rmid.1.gz \
--slave /usr/share/man/man1/rmiregistry.1.gz rmiregistry.1.gz /usr/java/default/man/man1/rmiregistry.1.gz \
--slave /usr/share/man/man1/servertool.1.gz servertool.1.gz /usr/java/default/man/man1/servertool.1.gz \
--slave /usr/share/man/man1/tnameserv.1.gz tnameserv.1.gz /usr/java/default/man/man1/tnameserv.1.gz \
--slave /usr/share/man/man1/unpack200.1.gz unpack200.1.gz /usr/java/default/man/man1/unpack200.1.gz
Then activate the configuration:
/usr/sbin/alternatives --config java
And select /usr/java/default/bin/java from the menu.
Plus you must gzip the man pages
gzip /usr/java/default/man/man1/*.1
Also, the Oracle java RPMs might have clobbered your alternatives symlink so force it to be normal.
ln -sf /etc/alternatives/java /usr/bin/java