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Devil
4:47 PM
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Oracle Linux uses RPM or Red Hat Package Manager. For installing latest Java platform download Java RPM packages from below Oracle link :
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:
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su - root
chmod +x jdk-6u26-linux-i586-rpm.bin
./jdk-6u26-linux-i586-rpm.bin
Unpacking...
Checksumming...
Extracting...
UnZipSFX 5.50 of 17 February 2002, by Info-ZIP (Zip-Bugs@lists.wku.edu).
inflating: jdk-6u26-linux-i586.rpm
inflating: sun-javadb-common-10.6.2-1.1.i386.rpm
inflating: sun-javadb-core-10.6.2-1.1.i386.rpm
inflating: sun-javadb-client-10.6.2-1.1.i386.rpm
inflating: sun-javadb-demo-10.6.2-1.1.i386.rpm
inflating: sun-javadb-docs-10.6.2-1.1.i386.rpm
inflating: sun-javadb-javadoc-10.6.2-1.1.i386.rpm
Preparing... ################################### [100%]
1:jdk ################################### [100%]
Unpacking JAR files...
rt.jar...
jsse.jar...
charsets.jar...
tools.jar...
localedata.jar...
plugin.jar...
javaws.jar...
deploy.jar...
Installing JavaDB
Preparing... ################################### [100%]
1:sun-javadb-common ################################### [ 17%]
2:sun-javadb-core ################################### [ 33%]
3:sun-javadb-client ################################### [ 50%]
4:sun-javadb-demo ################################### [ 67%]
5:sun-javadb-docs ################################### [ 83%]
6:sun-javadb-javadoc ################################### [100%]
Java(TM) SE Development Kit 6 successfully installed.
Product Registration is FREE and includes many benefits:
* Notification of new versions, patches, and updates
* Special offers on Oracle products, services and training
* Access to early releases and documentation
Product and system data will be collected. If your configuration
supports a browser, the JDK Product Registration form will
be presented. If you do not register, none of this information
will be saved. You may also register your JDK later by
opening the register.html file (located in the JDK installation
directory) in a browser.
For more information on what data Registration collects and
how it is managed and used, see:
http://java.sun.com/javase/registration/JDKRegistrationPrivacy.html
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Time to Check the Status of Update
Is it done? Let’s check it:
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java -version
java version "1.4.2"
gij (GNU libgcj) version 4.1.2 20080704 (Red Hat 4.1.2-50)
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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Since not all the Application are compatible with the Java Versions, we still need to have the older version of Java as well. Java, it does not overwrite the previous versions. Instead, all installed Java versions are available to use.
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)
We have to make this as Default Java,
r/java/jdk1.6.0_26/bin/java). I’ll add this as the default for Java:
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/usr/sbin/alternatives --install /usr/bin/java java
/usr/java/jdk1.6.0_26/bin/java 16026
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Below are the arguments used:
–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).
/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:
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/usr/sbin/alternatives --display java
java - status is auto.
link currently points to /usr/java/jdk1.6.0_26/bin/java
/usr/lib/jvm/jre-1.4.2-gcj/bin/java - priority 1420
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 - priority 16026
slave keytool: (null)
slave rmiregistry: (null)
slave jre_exports: (null)
slave jre: (null)
Current `best' version is /usr/java/jdk1.6.0_26/bin/java.
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Let’s check the version of java:
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java -version
java version "1.6.0_26"
Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
Java HotSpot(TM) Client VM (build 20.1-b02, mixed mode, sharing)
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Change the alternative of Java manually:
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/usr/sbin/alternatives --config java
There are 2 programs which provide 'java'.
Selection Command
-----------------------------------------------
1 /usr/lib/jvm/jre-1.4.2-gcj/bin/java
*+ 2 /usr/java/jdk1.6.0_26/bin/java
Enter to keep the current selection[+], or type selection number:
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Type the number of the alernative you want to use and hit enter key.
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