+1  A: 

JSP's need to be compiled (even if they're in the war), so there needs to be a compiler for it. You can't just use the JRE. This is for Java stuff, for groovy its most likely the same.

Paul
@Paul: so it might be a JDK its not on path just java_home.( can't check, the guy @ servers its off for today =/ ).i guess the question will be: can i use a grails war with a java_home not on path ?
jspairani
A: 

after achive to reproduce the production enviorment on testing server, the conclusion its that JDK will be installed.

this solved the problem.

thnx for the help =)

jspairani
A: 

GroovyWS needs javac to create stubs dinamically, then it needs JDK.

Wanderson Santos