Index: lams_build/conf/domain.xml
===================================================================
diff -u -r730e8d7952106eb6bd491466fba4e676a48397cc -rcdf9448f29864ee5181c0cdd10c455e2e775f7df
--- lams_build/conf/domain.xml	(.../domain.xml)	(revision 730e8d7952106eb6bd491466fba4e676a48397cc)
+++ lams_build/conf/domain.xml	(.../domain.xml)	(revision cdf9448f29864ee5181c0cdd10c455e2e775f7df)
@@ -375,7 +375,7 @@
                     <transport lock-timeout="60000"/>
                     <distributed-cache name="dist" mode="ASYNC" l1-lifespan="0" owners="2">
                         <locking isolation="REPEATABLE_READ"/>
-                        <transaction mode="BATCH"/>
+                        <transaction mode="BATCH" locking="OPTIMISTIC" />
                         <file-store/>
                     </distributed-cache>
                     <distributed-cache name="concurrent" mode="SYNC" l1-lifespan="0" owners="2">