diff --git a/garr/shib2common/manifests/classes/java/params.pp b/garr/shib2common/manifests/classes/java/params.pp
index e25944326f3fb9944bca5a3461f921afdd44f7ae..82ec62c7cd8a19267bca1f3f264ed5f974904cc7 100644
--- a/garr/shib2common/manifests/classes/java/params.pp
+++ b/garr/shib2common/manifests/classes/java/params.pp
@@ -15,4 +15,5 @@
 class shib2common::java::params {
   $java_dir_name = 'java-7-oracle'
   $java_home     = "/usr/lib/jvm/${java_dir_name}"
+  $java_opts     = '"-Djava.awt.headless=true -XX:+DisableExplicitGC -XX:+UseParallelOldGC -Xms256m -Xmx2g -XX:MaxPermSize=512m"'
 }