Index: lams_common/conf/hibernate/mappings/org/lamsfoundation/lams/learningdesign/Activity.hbm.xml
===================================================================
diff -u -r4ab7991a7e04000c7b1e353b7511e6f2f302a289 -r41a79cf889ab15b883345a45b5922cb52515d15d
--- lams_common/conf/hibernate/mappings/org/lamsfoundation/lams/learningdesign/Activity.hbm.xml	(.../Activity.hbm.xml)	(revision 4ab7991a7e04000c7b1e353b7511e6f2f302a289)
+++ lams_common/conf/hibernate/mappings/org/lamsfoundation/lams/learningdesign/Activity.hbm.xml	(.../Activity.hbm.xml)	(revision 41a79cf889ab15b883345a45b5922cb52515d15d)
@@ -222,15 +222,15 @@
              	<column name="system_tool_id" not-null="false"/>
              </many-to-one>                 
 
-			<set  name="waitingLearners" lazy="true" cascade="none" table="lams_activity_learners" batch-size="20" where="allowed_to_pass=0">
+			<set  name="waitingLearners" lazy="true" cascade="none" table="lams_activity_learners" where="allowed_to_pass=0">
        			<key><column name="activity_id" /></key>
        			<many-to-many column="user_id" class="org.lamsfoundation.lams.usermanagement.User"/>
    			</set>
-   			<set name="allowedToPassLearners" lazy="true" cascade="none" table="lams_activity_learners" batch-size="20" where="allowed_to_pass=1">
+   			<set name="allowedToPassLearners" lazy="true" cascade="none" table="lams_activity_learners" where="allowed_to_pass=1">
        			<key><column name="activity_id" /></key>
        			<many-to-many column="user_id" class="org.lamsfoundation.lams.usermanagement.User"/>
    			</set>
-   			<set name="allGateUsers" table="lams_activity_learners" lazy="true" cascade="all" batch-size="20">
+   			<set name="allGateUsers" table="lams_activity_learners" lazy="true" cascade="all">
        			<key><column name="activity_id" /></key>
        			<composite-element class="org.lamsfoundation.lams.learningdesign.GateUser">
        				<many-to-one name="user" class="org.lamsfoundation.lams.usermanagement.User" column="user_id" cascade="none" />
Index: lams_common/conf/hibernate/mappings/org/lamsfoundation/lams/learningdesign/Group.hbm.xml
===================================================================
diff -u -rae3f3c7a291e57b1753cdad92804ed4b28474b55 -r41a79cf889ab15b883345a45b5922cb52515d15d
--- lams_common/conf/hibernate/mappings/org/lamsfoundation/lams/learningdesign/Group.hbm.xml	(.../Group.hbm.xml)	(revision ae3f3c7a291e57b1753cdad92804ed4b28474b55)
+++ lams_common/conf/hibernate/mappings/org/lamsfoundation/lams/learningdesign/Group.hbm.xml	(.../Group.hbm.xml)	(revision 41a79cf889ab15b883345a45b5922cb52515d15d)
@@ -77,7 +77,6 @@
         lazy="extra"
         cascade="none"
         table="lams_user_group"
-        batch-size="20"
     >
         <key>
             <column name="group_id" />