Index: lams_tool_laqa/conf/hibernate/mappings/QaSession.hbm.xml
===================================================================
diff -u -re4fa840a72a71bfd8608fbb2ac359e59832bf881 -rd02bece7bdf9572cacaa891df7b0efceb3096ef5
--- lams_tool_laqa/conf/hibernate/mappings/QaSession.hbm.xml	(.../QaSession.hbm.xml)	(revision e4fa840a72a71bfd8608fbb2ac359e59832bf881)
+++ lams_tool_laqa/conf/hibernate/mappings/QaSession.hbm.xml	(.../QaSession.hbm.xml)	(revision d02bece7bdf9572cacaa891df7b0efceb3096ef5)
@@ -8,14 +8,26 @@
     name="org.lamsfoundation.lams.tool.qa.QaSession" 
     table="tl_laqa11_session"
 >
+
     <id
+        name="uid"
+        type="java.lang.Long"
+        column="uid"
+    >
+        <generator class="native" />
+    </id>
+
+
+	<property
         name="qaSessionId"
         type="java.lang.Long"
         column="qa_session_id"
+        not-null="true"
+        length="20"
     >
-		    <generator class="assigned"/>
-    </id>
+    </property>
 
+
     <property
         name="session_start_date"
         type="java.util.Date"