Oracle Linux uses RPM (Red Hat Package Manager). If you want to install latest Java platform, you can download Java RPM packages from:

http://www.oracle.com/technetwork/java/javase/downloads/index.html

Oracle releases Java RPM wrapped in a self-extracting binary file. So instead of using rpm tool, you just change the mode of file, and make it executable and then run it:

Is it done? Let’s check it:

As you see, although we installed the latest Java, we still use the old one. Because of the incompatibilities between Java versions, when you install/update Java, it does not overwrite the previous versions. Instead, all installed Java versions are available to use.

At this point, “alternatives” system takes into action. The alternatives system is a reimplementation of the Debian alternatives system. It maintains symbolic links determining default commands.

Our java is installed under /usr/java/jdk1.6.0_26 (so the path of java binary is /usr/java/jdk1.6.0_26/bin/java). I’ll add this as the default for Java:

Here are the arguments:

–install tells that we’ll add a new alternative
/usr/bin/java is the default path for Java
java is the name of the software
/usr/java/jdk1.6.0_26/bin/java is the path of latest java we installed
16026 is the priority, I recommend you to give the exact version number so when you install a newer version and enter its version as priority, it’ll be selected as the default one (as long as mode is auto).

Let’s the alternatives of Java:

Let’s check the version of java:

You can also change the alternative of Java manually:

Type the number of the alernative you want to use and hit enter key.

21 Responses to “How to Install/Update Java (JDK) on Oracle Linux”

  1. Patricia says:

    Thanx from Spain!!!
    Your post has saved me.

  2. That worked a treat, thank you.

  3. Hi,
    I am running Oracle 11g R2.0.3 on a RedHat 5.8 server. The system java /usr/bin/java is the latest RedHat release of 1.6.
    There is another version of java located in $ORACLE_HOME/jdk/bin which is version 1.5.0_30. How do I update this to the latest?
    Thank you,
    Kerry

    • Gokhan Atil says:

      Hi Kerry, as I see it’s the JDK which is used only by Oracle Database management applications. I don’t see any reason to update it, and I recommend you to not to update it.

  4. You’re a life saver, thanks a lot :)

  5. ibtissam says:

    Hi ! I try to download JDK using this command :
    wget http://edelivery.oracle.com/otn-pub/…linux-i586.rpm

    But i get this answer :

    –2013-03-14 15:50:30– http://edelivery.oracle.com/otn-pub/…linux-i586.rpm
    Connecting to 138.21.89.192:3128… connected.
    Proxy request sent, awaiting response… 302 Found
    Location: https://edelivery.oracle.com/otn-pub…linux-i586.rpm [following]
    –2013-03-14 15:50:30– https://edelivery.oracle.com/otn-pub…linux-i586.rpm
    Resolving edelivery.oracle.com… failed: Name or service not known.
    wget: unable to resolve host address `edelivery.oracle.com’

    wget http://www.google.for work .

    Can You help me please?

    • Gokhan Atil says:

      It looks like a DNS problem. You may try to download it on your PC and then transfer the RPM file to the server.

      • ibtissam says:

        it was a problem of certificate on the oracle website ( you have to accept the conditions of the certificate before starting the download ). THank you for your answer, i sent my file using FTP .

  6. awreneau says:

    Great doc, helped me clear a hurdle. Shared it w/ my team. Many thanks.

  7. üstadım ben nokia asha için uygulama yazmak istiyorum fakat asha sdk sını yüklememe rağmen jdk 7 update 21 ve 17 yi yüklememi istedi. ardından bunlarıda yükledim fakat hala hata devam ediyor. rica etsem nedenini açıklayabilir misiniz?
    (ingilizcem pek yok ).

  8. Hi,

    I am someone who only knows the ABC’s of the modern computer. I am attempting to delete Java development kit 6 update 15 and every time I do this a box pops up asking me if I would like to install not uninstall and I of course decline being from an unkown source. I simply would just like to delete it. My computer is overheating and I am about to download photoshop on this computer so I am trying to get rid of programs I do not need. If you think you can really help me with this I would be as forward to give my phone number if you are interested in helping. I am about to embark on a few business ventures and need a quality computer to run from.

    Erin Fitzgerald

    California, USA

  9. David Scholler says:

    Gokhan,

    Your comment “Hi Kerry, as I see it’s the JDK which is used only by Oracle Database management applications. I don’t see any reason to update it, and I recommend you to not to update it.” The only problem with this is security scans are flaging this as not being updated, so we need to update this. I was wondering a way to update this java being oracle isn’t using the system Java that is 1.7.0_25?

    Thanks

    • Gokhan Atil says:

      David, I see what you mean but if you update this Java, oracle tools (using that java) may stop working.

  10. hi am using Linux 4 Update 8

    and i have installed jdk 1.7 on my previous version 1.4 but when i type

    #java -version

    showing

    [root@gdqas java]# java -version
    Error: dl failure on line 863
    Error: failed /usr/java/jdk1.7.0_51/jre/lib/i386/server/libjvm.so, because /lib/tls/libc.so.6: version `GLIBC_2.4′ not found (required by /usr/java/jdk1.7.0_51/jre/lib/i386/server/libjvm.so)

    so i want to uninstall 1.7 and go for 1.6. how to uninstall 1.7 please guide me

    Thanks

  11. Thanks Gokhan,

    Not so complicated if you know it, but still very handy and useful to know!

  12. Gangireddy says:

    Here the 1.6.0_26 related slaves are seems to be null , how we can we override these values to java 1.4.2 values ?

    /usr/sbin/alternativesdisplay java

    java-status isauto.
    linkcurrently points to/usr/java/jdk1.6.0_26/bin/java
    /usr/lib/jvm/jre-1.4.2-gcj/bin/java-priority1420
    slave keytool:/usr/lib/jvm/jre-1.4.2-gcj/bin/keytool
    slave rmiregistry:/usr/lib/jvm/jre-1.4.2-gcj/bin/rmiregistry
    slave jre_exports:/usr/lib/jvm-exports/jre-1.4.2-gcj
    slave jre:/usr/lib/jvm/jre-1.4.2-gcj
    /usr/java/jdk1.6.0_26/bin/java-priority16026
    slave keytool:(null)
    slave rmiregistry:(null)
    slave jre_exports:(null)
    slave jre:(null)
    Current`bestversion is/usr/java/jdk1.6.0_26/bin/java.

  13. ganesh says:

    Hi sir i need ur help when i installing grid control on i got this error please give me reply OMS configured failed what could be the reason……

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