When using With this method for of installing the additional scripting languages it will mean that you will need to add provide the relevant scripting jars in into the Lib folder every-time you conduct a Jira upgrade (Which is time consuming). Following . Using the method above (Install into JDK distribution) will save time during the initial Jira/Jemh setup as the additional Scripting languages can be used by all of the newly created Jira instance when the same JRE is used.means that you will only need to install these languages once. (As long as you are using the same Java version for the new instance)