Fedora: Uninstall Java JDK 1.8 and install Oracle Java 1.7.15 Post: 303009957

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Operating Systems Linux Fedora Fedora: Uninstall Java JDK 1.8 and install Oracle Java 1.7.15 Post 303009957 by Peasant on Friday 22nd of December 2017 11:59:23 PM

12-23-2017

Moderator

No need to uninstall anything.

Install the required oracle java using rpm.
Using alternatives command as superuser one can change the default java used.

Bare in mind, that perhaps some programs on the system rely on open java, so above change could affect those.

One could also download only required oracle java as compressed archive with all binaries and libraries required.
Create a user on the system which will utilize that java environment.
Unpack the archive under /opt/orajava (for instance)
As root, chown /opt/orajava to user created.
Setup required java options in user home directory profile file (JAVA_HOME etc.)
Configure kernel parameters for that user, depending on the application requirements/load (if applicable, defaults are often ok).

Above setup will have no effect on the system other then running new processes/code (load) under user created above and consuming disk space required.

Hope that helps
Regards
Peasant.

Peasant

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LEARN ABOUT MOJAVE

jconsole

jconsole(1)						      General Commands Manual						       jconsole(1)

NAME

       jconsole - J2SE Monitoring and Management Console

SYNOPSIS

       jconsole [ options ] [ pid | [ host:port ...  ] ]

PARAMETERS

       pid	      Process  ID of a Java VM that was started with -Dcom.sun.management.jmxremote option on the same machine. See JMX Monitoring
		      and Management for details at http://java.sun.com/j2se/1.5.0/docs/guide/management/agent.html.

       host:port      Host name on which the Java VM is running and the port number through which the Java VM's JMX Connector is  published.   See
		      JMX Monitoring and Management for details at http://java.sun.com/j2se/1.5.0/docs/guide/management/agent.html.

DESCRIPTION

       The  jconsole  command launches a graphical console tool that enables you to monitor and manage Java applications and virtual machines on a
       local or remote machine.

       NOTE- This tool is experimental and may not be available in future versions of the JDK.

OPTIONS

       -interval=n    Set the update interval to n seconds (default is 4 seconds)

       -notile	      Do not tile windows initially (for two or more connections)

       -version       Output version information abd exit.

       -help	      Output help message and exit.

SEE ALSO

       Monitoring and Management for Java Platform at http://java.sun.com/j2se/1.5.0/docs/guide/management/index.html

								    06 Feb 2004 						       jconsole(1)