Blog

30Dec
2003 Changing the JRun JRE

I recently needed to change the JRE used by JRun (to a newer version). No problem, just stop JRun, remove the old JRE, install the new one and restart JRun. Right? Nope. JRun stores the JRE path, and that needs to be updated to reflect the new JRE location. It took a few minutes to find where this information is stored, so in case anyone else needs this (or for the next time I need it myself), it is in {JRun root}/bin/jvm.config.

Comments (6)



  • Waldo Smeets

    Or just use the JRun Management Console, browse to a server > Settings > JVM Settings and then specify the path in there. (note: as far as I know this will affect all servers)

    #1Posted by Waldo Smeets | Dec 31, 2003, 10:13 AM
  • Ben Forta

    That will work if you *add* a JRE, but if you replace it (like I did) then you won't be able to get to the JMC as the admin server won't run. :-)

    #2Posted by Ben Forta | Dec 31, 2003, 10:17 AM
  • Waldo Smeets

    Argh, of course you're right :-)

    #3Posted by Waldo Smeets | Dec 31, 2003, 10:20 AM
  • Calvin

    Also, if I recall, if you use the JRun Management Console to make some of those changes, it will rearrange the arguments in the jvm.config (at least the CFMX on JRun version did).

    #4Posted by Calvin | Dec 31, 2003, 04:35 PM
  • Tjarko

    Have a great 2004 Ben!! with the lack of a good new years posting I'll just say it here :-)

    #5Posted by Tjarko | Jan 1, 2004, 03:29 PM
  • Tony

    Hi Ben, I am newbie to Jrun, and i read you blog abut the 'Changing the JRun JRE'. you mentioned to "remove the old JRE" in Jrun 4? and i am wondering how do you do that? Thanks in advance
    -Tony

    #6Posted by Tony | Jul 18, 2005, 01:24 AM