Multiple JDK versions on same OS (AIX)

[Former Member]

Hi,

We have the Dev and QA systems on one server. I want to upgrade the JDK on only the Dev system, without affecting the QA system. Do I only have to change the user env variable JAVA_HOME? What about PATH?

Does someone know if it is possible to install multiple JDK versions on one OS and do you have some tips?

Regards,

CJ

[Former Member · Accepted solution]

Eric has a good idea. I'll add another.

You could create a symbolic link to the new java version also, and use this to point to your JAVA_HOME for devadm.

We have a Solaris admin who installs all java versions on the box, then uses symbolic links (aka aliases) for mapping purposes such as this.

Hope this helps,

Tim

[Former Member]

Thanks for your recommendations!

[former_member237781]

Assuming you are running the J2EE stack: you can set the parameter "jstartup/vm/home" in the SAP instance profile /sapmnt/SID/profile/SID_JC00_host.

Example:

jstartup/vm/home = /usr/java14_64

That way you can have a different Java home for each SAP J2EE instance.

HTH,

Henning Sackewitz

[former_member204746]

you need these:

install each JDK in their own directory

change paths for each [sid]adm (JAVA_HOME and user PATHS)

if the system path contains JDK paths, take it out of there and put it in each user paths.

good luck.