Index: src/api/org/openmrs/logic/db/hibernate/HibernateLogicEncounterDAO.java
===================================================================
--- src/api/org/openmrs/logic/db/hibernate/HibernateLogicEncounterDAO.java	(revision 22005)
+++ src/api/org/openmrs/logic/db/hibernate/HibernateLogicEncounterDAO.java	(working copy)
@@ -33,9 +33,9 @@
 import org.hibernate.criterion.Restrictions;
 import org.openmrs.Cohort;
 import org.openmrs.Encounter;
+import org.openmrs.logic.Duration;
 import org.openmrs.logic.LogicContext;
 import org.openmrs.logic.LogicCriteria;
-import org.openmrs.logic.Duration;
 import org.openmrs.logic.LogicException;
 import org.openmrs.logic.LogicExpression;
 import org.openmrs.logic.LogicExpressionBinary;
@@ -49,6 +49,7 @@
 import org.openmrs.logic.util.LogicExpressionToCriterion;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
 
 /**
  * This class builds the hibernate statements needed to execute logic evaluations for the
@@ -346,6 +347,7 @@
 	 * @see org.openmrs.api.db.EncounterDAO#getEncounters(org.openmrs.Patient, org.openmrs.Location,
 	 *      Date, Date, java.util.Collection, java.util.Collection, java.util.Collection, boolean)
 	 */
+	@Transactional(readOnly=true)
 	public List<Encounter> getEncounters(Cohort who, LogicCriteria logicCriteria, LogicContext logicContext)
 	                                                                                                        throws LogicException {
 		return logicToHibernate(logicCriteria.getExpression(), who, logicContext);
Index: src/api/org/openmrs/logic/db/hibernate/HibernateLogicObsDAO.java
===================================================================
--- src/api/org/openmrs/logic/db/hibernate/HibernateLogicObsDAO.java	(revision 22005)
+++ src/api/org/openmrs/logic/db/hibernate/HibernateLogicObsDAO.java	(working copy)
@@ -51,6 +51,7 @@
 import org.openmrs.logic.util.LogicExpressionToCriterion;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
 
 /**
  *
@@ -371,6 +372,7 @@
 	 * @see org.openmrs.api.db.ObsDAO#getObservations(List, List, List, List, List, List, List,
 	 *      Integer, Integer, Date, Date, boolean)
 	 */
+	@Transactional(readOnly=true)
 	public List<Obs> getObservations(Cohort who, LogicCriteria logicCriteria, LogicContext logicContext) throws LogicException {
 		log.debug("*** Reading observations ***");
 		return logicToHibernate(logicCriteria.getExpression(), who, logicContext);
@@ -381,6 +383,7 @@
 	 */
 	@SuppressWarnings("unchecked")
     @Override
+    @Transactional(readOnly=true)
 	public List<Integer> getAllQuestionConceptIds() {
 		Query query = sessionFactory.getCurrentSession().createQuery("select conceptId from Concept where datatype.uuid != :naUuid");
 		query.setString("naUuid", ConceptDatatype.N_A_UUID);
Index: src/api/org/openmrs/logic/db/hibernate/HibernateLogicPatientDAO.java
===================================================================
--- src/api/org/openmrs/logic/db/hibernate/HibernateLogicPatientDAO.java	(revision 22005)
+++ src/api/org/openmrs/logic/db/hibernate/HibernateLogicPatientDAO.java	(working copy)
@@ -36,6 +36,7 @@
 import org.openmrs.logic.util.LogicExpressionToCriterion;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
 
 /**
  * 
@@ -132,6 +133,7 @@
 	 * @throws LogicException
 	 * @see org.openmrs.api.db.PatientDAO#getPeople(String, Boolean)
 	 */
+	@Transactional(readOnly=true)
 	public List<Patient> getPatients(Collection<Integer> patientIds, LogicCriteria logicCriteria) throws LogicException {
 		return logicToHibernate(logicCriteria.getExpression(), patientIds);
 	}
Index: src/api/org/openmrs/logic/db/hibernate/HibernateLogicPersonDAO.java
===================================================================
--- src/api/org/openmrs/logic/db/hibernate/HibernateLogicPersonDAO.java	(revision 22005)
+++ src/api/org/openmrs/logic/db/hibernate/HibernateLogicPersonDAO.java	(working copy)
@@ -36,6 +36,7 @@
 import org.openmrs.logic.util.LogicExpressionToCriterion;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
 
 /**
  * 
@@ -141,6 +142,7 @@
 	 * @throws LogicException
 	 * @see org.openmrs.api.db.PersonDAO#getPeople(String, Boolean)
 	 */
+	@Transactional(readOnly=true)
 	public List<Person> getPersons(Collection<Integer> personIds, LogicCriteria logicCriteria) throws LogicException {
 		return logicToHibernate(logicCriteria.getExpression(), personIds);
 	}