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From Ole Ersoy <>
Subject Re: [OT] Tips & Tricks for switching VMs?
Date Wed, 27 Jun 2007 04:07:14 GMT
Hey Enrique,

You may want to give JPackage a shot.  You can use the alternatives system to switch java
implementations.  Here's how:

/usr/sbin/alternatives --config java

There are 3 programs which provide 'java'.

  Selection    Command
   1           /usr/lib/jvm/jre-1.5.0-gcj/bin/java
 + 2           /opt/jdk1.6.0_01/bin/java
*  3           /usr/lib/jvm/jre-1.6.0-sun/bin/java

Enter to keep the current selection[+], or type selection number: 3

As you see above, I just switched to using the JPackage java install, rather than the one
I personally installed under /opt....

JPackage also supports IBM and BEA JVMs.  

- Ole

Enrique Rodriguez wrote:
> Hi, Directory developers,
> This is slightly OT but relevant to Directory development.  I need to
> test Directory on at least Sun and IBM VM's (re: crypto differences).
> I used to simply maintain two workstations for this but now I have
> 1.4, 1.6, 32-bit, & 64-bit variants for other projects
> So, before I launch into something complicated, like a VMware or Xen
> setup or try writing a script, I was wondering what other people did.
> Perhaps you maintain separate user accounts and ssh to your localhost
> to test builds under different user accounts?  Or just use Eclipse
> ability to switch JRE's pretty easily and make sure testcases exercise
> runtime issues?
> One thing I'd like to do is switch VM's and build the same working
> copy.  Meaning, I'd rather not have to check-in/check-out of SVN to
> replicate changes so that potentially build-breaking commits don't
> touch the repo.
> Ideas?
> Enrique

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