topic Re: Multiple version of java in HP-UX in Operating System - HP-UX

Multiple version of java in HP-UX

Sum_2 — Thu, 22 Apr 2010 19:18:20 GMT

Hi Gurus,
I have a HP-UX 11.11 box in which I have java.1.4.2.04 installed. One of our application called Mqm uses that java. There is a critical alert to upgrade to java.1.4.2.24, however, we cannot overwrite the /opt/java.1.4 directory because it will mess up the mqm application that is currently using it.
Can Any one suggest a way to install the java.1.4.2.24 version to a different directory (for instance /opt/java1.4.2.24) instead of the default /opt/java.14.

Thanks,
Suma

Re: Multiple version of java in HP-UX

Steven E. Protter — Thu, 22 Apr 2010 19:31:37 GMT

Shalom Suma,

Suggestions

1) Use another system
2) Use a different target for the install. I tried this and its a PITA. This is done in the swinstall process

SEP

Re: Multiple version of java in HP-UX

Tingli — Thu, 22 Apr 2010 21:18:39 GMT

You can install it to a different directory, such as /opt/java.1.4.2.24. And you need to set Mqm to the new java place.

Re: Multiple version of java in HP-UX

Dennis Handly — Fri, 23 Apr 2010 07:30:37 GMT

>Can anyone suggest a way to install the java.1.4.2.24 version to a different directory?

There are two ways swinstall can do this. Alternate root: @ /alternate-root path
Locatable
swlist -a is_locatable -s $PWD/foo.depot

Is is_locatable true for your depot?

http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=1132499
http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=1165706

Re: Multiple version of java in HP-UX

SoorajCleris — Sat, 24 Apr 2010 06:53:02 GMT

Hi,

Multiple versions in same system.
Is that recommended????

Regards,
Sooraj

Re: Multiple version of java in HP-UX

B. Hulst — Sat, 24 Apr 2010 19:03:23 GMT

Usually application using java have an environment variable that points to the java version to use.

set CLASSPATH=/opt/java/

You could change this after installation of the newer java version.

Re: Multiple version of java in HP-UX

Wim Rombauts — Mon, 26 Apr 2010 06:37:57 GMT

Normally, it should be nio problem to run yuor Mqm application with java 1.4.2.24. If you keep it running on java1.4.2.04, you will not fix the alert.

This is what you can do :

1) Copy your current java to a new directory : cp -pr /opt/java1.4 /opt/java1.4.2.04

2) Change the JAVA_HOME or PATH variables in the startup scripts of your application (or all java-4 applications), and restart the application when it fits you. Verify that nothing is using the regular /opt/java1.4 directory

3) Install the newer java version with swinstall without any special options.

4) Reset the JAVA_HOME and/or PATH variables to /opt/java1.4 so that the applications pick upthe newer java version once they restart.

-> If it turns out that, against all expectations, your appicatrion can't handle java 1.4.2.24, you can allways revert to the original version by setting the JAVA_HOME and/or PATH variables to /opt/java1.4.2.04

If your application cannot handle java 1.4.2.24, and you can't change the java path for your Mqm application, there is another step you can take : Move /opt/java1.4 to /opt/java1.4.2.24 and then move /opt/java1.4.2.04 to /opt/java1.4.
But you now need to change the JAVA_HOME and PATH variables for all your other java applications, or you could as well install nothing at all.