update

edu-user/edu-user-biz/src/main/java/com/keao/edu/user/service/impl/ExamRoomServiceImpl.java

@@ -38,6 +38,7 @@ import org.apache.commons.beanutils.BeanUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Isolation;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.util.CollectionUtils;
 
@@ -793,7 +794,7 @@ public class ExamRoomServiceImpl extends BaseServiceImpl<Long, ExamRoom> impleme
 	}
 
 	@Override
-	@Transactional(rollbackFor = Exception.class)
+	@Transactional(rollbackFor = Exception.class,isolation = Isolation.SERIALIZABLE)
 	public void changeExamRoom(Long examRoomId, Integer openFlag) {
 		ExamRoom examRoom = examRoomDao.get(examRoomId);
 		ExaminationBasic examinationBasic = examinationBasicDao.get(examRoom.getExaminationBasicId());