Index: lams_common/src/java/org/lamsfoundation/lams/tool/toolApplicationContext.xml
===================================================================
diff -u -r0b2737221177ec6fb88f447aa647f9413f4373f8 -r6c4441830205256296c670e47b51604095ba175d
--- lams_common/src/java/org/lamsfoundation/lams/tool/toolApplicationContext.xml	(.../toolApplicationContext.xml)	(revision 0b2737221177ec6fb88f447aa647f9413f4373f8)
+++ lams_common/src/java/org/lamsfoundation/lams/tool/toolApplicationContext.xml	(.../toolApplicationContext.xml)	(revision 6c4441830205256296c670e47b51604095ba175d)
@@ -27,7 +27,7 @@
 		<property name="target"><ref local="toolContentIDGeneratorTarget"/></property>
 		<property name="transactionAttributes">
 			<props>
-				<prop key="getNextToolContentIDFor">PROPAGATION_REQUIRES_NEW,ISOLATION_READ_COMMITTED</prop>
+				<prop key="getNextToolContentIDFor">PROPAGATION_REQUIRES_NEW</prop>
 			</props>
 		</property>
 	</bean>
@@ -44,9 +44,9 @@
 		<property name="target"><ref local="lamsCoreToolServiceTarget"/></property>
 		<property name="transactionAttributes">
 			<props>
-				<prop key="createToolSession">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="notifyToolsToCreateSession">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-			    <prop key="update*">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
+				<prop key="createToolSession">PROPAGATION_REQUIRED</prop>
+				<prop key="notifyToolsToCreateSession">PROPAGATION_REQUIRED</prop>
+			    <prop key="update*">PROPAGATION_REQUIRED</prop>
 			    <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
 			</props>
 		</property>
Index: lams_learning/src/java/org/lamsfoundation/lams/learning/learningApplicationContext.xml
===================================================================
diff -u -r4f71f01ca57afc6429e180e7f0e1035d7bf9c2f7 -r6c4441830205256296c670e47b51604095ba175d
--- lams_learning/src/java/org/lamsfoundation/lams/learning/learningApplicationContext.xml	(.../learningApplicationContext.xml)	(revision 4f71f01ca57afc6429e180e7f0e1035d7bf9c2f7)
+++ lams_learning/src/java/org/lamsfoundation/lams/learning/learningApplicationContext.xml	(.../learningApplicationContext.xml)	(revision 6c4441830205256296c670e47b51604095ba175d)
@@ -29,13 +29,13 @@
 		<property name="target"><ref local="learnerServiceTarget"/></property>
 		<property name="transactionAttributes">
 			<props>
-				<prop key="joinLesson">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="calculateProgress">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="completeToolSession">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="completelActivity">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="exitLesson">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="performGrouping">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="knockGate">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
+				<prop key="joinLesson">PROPAGATION_REQUIRED</prop>
+				<prop key="calculateProgress">PROPAGATION_REQUIRED</prop>
+				<prop key="completeToolSession">PROPAGATION_REQUIRED</prop>
+				<prop key="completelActivity">PROPAGATION_REQUIRED</prop>
+				<prop key="exitLesson">PROPAGATION_REQUIRED</prop>
+				<prop key="performGrouping">PROPAGATION_REQUIRED</prop>
+				<prop key="knockGate">PROPAGATION_REQUIRED</prop>
    			</props>
 		</property>
 	</bean> 
Index: lams_learning/test/web/WEB-INF/spring/learningApplicationContext.xml
===================================================================
diff -u -rab10f209f4b263efda21297d6fb224105456edae -r6c4441830205256296c670e47b51604095ba175d
--- lams_learning/test/web/WEB-INF/spring/learningApplicationContext.xml	(.../learningApplicationContext.xml)	(revision ab10f209f4b263efda21297d6fb224105456edae)
+++ lams_learning/test/web/WEB-INF/spring/learningApplicationContext.xml	(.../learningApplicationContext.xml)	(revision 6c4441830205256296c670e47b51604095ba175d)
@@ -29,13 +29,13 @@
 		<property name="target"><ref local="learnerServiceTarget"/></property>
 		<property name="transactionAttributes">
 			<props>
-				<prop key="joinLesson">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="calculateProgress">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="completeToolSession">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="completelActivity">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="exitLesson">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="performGrouping">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="knockGate">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
+				<prop key="joinLesson">PROPAGATION_REQUIRED</prop>
+				<prop key="calculateProgress">PROPAGATION_REQUIRED</prop>
+				<prop key="completeToolSession">PROPAGATION_REQUIRED</prop>
+				<prop key="completelActivity">PROPAGATION_REQUIRED</prop>
+				<prop key="exitLesson">PROPAGATION_REQUIRED</prop>
+				<prop key="performGrouping">PROPAGATION_REQUIRED</prop>
+				<prop key="knockGate">PROPAGATION_REQUIRED</prop>
    			</props>
 		</property>
 	</bean> 
@@ -51,7 +51,7 @@
 		</property>
 		<property name="transactionAttributes">
 			<props>
-				<prop key="export*">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
+				<prop key="export*">PROPAGATION_REQUIRED</prop>
 			</props>
 		</property>
 	</bean> 
Index: lams_learning/web/WEB-INF/spring/toolApplicationContext.xml
===================================================================
diff -u -r7213f7efef305780b43d6d8f8c3f0616237ba8ec -r6c4441830205256296c670e47b51604095ba175d
--- lams_learning/web/WEB-INF/spring/toolApplicationContext.xml	(.../toolApplicationContext.xml)	(revision 7213f7efef305780b43d6d8f8c3f0616237ba8ec)
+++ lams_learning/web/WEB-INF/spring/toolApplicationContext.xml	(.../toolApplicationContext.xml)	(revision 6c4441830205256296c670e47b51604095ba175d)
@@ -27,7 +27,7 @@
 		<property name="target"><ref local="toolContentIDGeneratorTarget"/></property>
 		<property name="transactionAttributes">
 			<props>
-				<prop key="getNextToolContentIDFor">PROPAGATION_REQUIRES_NEW,ISOLATION_READ_COMMITTED</prop>
+				<prop key="getNextToolContentIDFor">PROPAGATION_REQUIRES_NEW</prop>
 			</props>
 		</property>
 	</bean>
@@ -44,9 +44,9 @@
 		<property name="target"><ref local="lamsCoreToolServiceTarget"/></property>
 		<property name="transactionAttributes">
 			<props>
-				<prop key="createToolSession">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="notifyToolsToCreateSession">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-			    <prop key="update*">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
+				<prop key="createToolSession">PROPAGATION_REQUIRED</prop>
+				<prop key="notifyToolsToCreateSession">PROPAGATION_REQUIRED</prop>
+			    <prop key="update*">PROPAGATION_REQUIRED</prop>
 			    <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
 			</props>
 		</property>
Index: lams_monitoring/src/java/org/lamsfoundation/lams/monitoring/monitoringApplicationContext.xml
===================================================================
diff -u -r2fb270efd025291a9a2d45b04ad1b13aad40f170 -r6c4441830205256296c670e47b51604095ba175d
--- lams_monitoring/src/java/org/lamsfoundation/lams/monitoring/monitoringApplicationContext.xml	(.../monitoringApplicationContext.xml)	(revision 2fb270efd025291a9a2d45b04ad1b13aad40f170)
+++ lams_monitoring/src/java/org/lamsfoundation/lams/monitoring/monitoringApplicationContext.xml	(.../monitoringApplicationContext.xml)	(revision 6c4441830205256296c670e47b51604095ba175d)
@@ -59,11 +59,11 @@
 		<property name="target"><ref local="monitoringServiceTarget"/></property>
 		<property name="transactionAttributes">
 			<props>
-				<prop key="initializeLesson">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="createLessonClassForLesson">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="startLesson">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="openGate">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="closeGate">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
+				<prop key="initializeLesson">PROPAGATION_REQUIRED</prop>
+				<prop key="createLessonClassForLesson">PROPAGATION_REQUIRED</prop>
+				<prop key="startLesson">PROPAGATION_REQUIRED</prop>
+				<prop key="openGate">PROPAGATION_REQUIRED</prop>
+				<prop key="closeGate">PROPAGATION_REQUIRED</prop>
 			</props>
 		</property>
 	</bean>    
Index: lams_monitoring/test/web/WEB-INF/spring/learningApplicationContext.xml
===================================================================
diff -u -rb6df3bbcefaf4633858d1d3161063abc3b620e7e -r6c4441830205256296c670e47b51604095ba175d
--- lams_monitoring/test/web/WEB-INF/spring/learningApplicationContext.xml	(.../learningApplicationContext.xml)	(revision b6df3bbcefaf4633858d1d3161063abc3b620e7e)
+++ lams_monitoring/test/web/WEB-INF/spring/learningApplicationContext.xml	(.../learningApplicationContext.xml)	(revision 6c4441830205256296c670e47b51604095ba175d)
@@ -29,13 +29,13 @@
 		<property name="target"><ref local="learnerServiceTarget"/></property>
 		<property name="transactionAttributes">
 			<props>
-				<prop key="joinLesson">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="calculateProgress">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="completeToolSession">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="completelActivity">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="exitLesson">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="performGrouping">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="knockGate">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
+				<prop key="joinLesson">PROPAGATION_REQUIRED</prop>
+				<prop key="calculateProgress">PROPAGATION_REQUIRED</prop>
+				<prop key="completeToolSession">PROPAGATION_REQUIRED</prop>
+				<prop key="completelActivity">PROPAGATION_REQUIRED</prop>
+				<prop key="exitLesson">PROPAGATION_REQUIRED</prop>
+				<prop key="performGrouping">PROPAGATION_REQUIRED</prop>
+				<prop key="knockGate">PROPAGATION_REQUIRED</prop>
    			</props>
 		</property>
 	</bean> 
Index: lams_monitoring/test/web/WEB-INF/spring/monitoringApplicationContext.xml
===================================================================
diff -u -rb6df3bbcefaf4633858d1d3161063abc3b620e7e -r6c4441830205256296c670e47b51604095ba175d
--- lams_monitoring/test/web/WEB-INF/spring/monitoringApplicationContext.xml	(.../monitoringApplicationContext.xml)	(revision b6df3bbcefaf4633858d1d3161063abc3b620e7e)
+++ lams_monitoring/test/web/WEB-INF/spring/monitoringApplicationContext.xml	(.../monitoringApplicationContext.xml)	(revision 6c4441830205256296c670e47b51604095ba175d)
@@ -38,11 +38,11 @@
 		<property name="target"><ref local="monitoringServiceTarget"/></property>
 		<property name="transactionAttributes">
 			<props>
-				<prop key="initializeLesson">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="createLessonClassForLesson">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="startLesson">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="openGate">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
-				<prop key="closeGate">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
+				<prop key="initializeLesson">PROPAGATION_REQUIRED</prop>
+				<prop key="createLessonClassForLesson">PROPAGATION_REQUIRED</prop>
+				<prop key="startLesson">PROPAGATION_REQUIRED</prop>
+				<prop key="openGate">PROPAGATION_REQUIRED</prop>
+				<prop key="closeGate">PROPAGATION_REQUIRED</prop>
 			</props>
 		</property>
 	</bean>    
Index: lams_tool_nb/src/java/org/lamsfoundation/lams/tool/noticeboard/applicationContext.xml
===================================================================
diff -u -r53f95943f108416112dc2532657f7b0e93cf58ed -r6c4441830205256296c670e47b51604095ba175d
--- lams_tool_nb/src/java/org/lamsfoundation/lams/tool/noticeboard/applicationContext.xml	(.../applicationContext.xml)	(revision 53f95943f108416112dc2532657f7b0e93cf58ed)
+++ lams_tool_nb/src/java/org/lamsfoundation/lams/tool/noticeboard/applicationContext.xml	(.../applicationContext.xml)	(revision 6c4441830205256296c670e47b51604095ba175d)
@@ -46,7 +46,7 @@
 				<prop key="retrieve*">PROPAGATION_REQUIRED</prop>
 				<prop key="remove*">PROPAGATION_REQUIRED</prop>
 				<prop key="add*">PROPAGATION_REQUIRED</prop>
-				<prop key="leaveToolSession">PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED</prop>
+				<prop key="leaveToolSession">PROPAGATION_REQUIRED</prop>
 			</props>
 		</property>
 	</bean>