Fixing https://wso2.org/jira/browse/EMM-1133

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/impl/ApplicationMappingDAOImpl.java

@@ -102,20 +102,17 @@ public class ApplicationMappingDAOImpl implements ApplicationMappingDAO {
         Connection conn;
         PreparedStatement stmt = null;
         try {
-            conn = this.getConnection();
             String sql = "DELETE DM_DEVICE_APPLICATION_MAPPING WHERE DEVICE_ID = ? AND " +
                     "APPLICATION_ID = ? AND TENANT_ID = ?";
 
-            conn.setAutoCommit(false);
+            conn = this.getConnection();
+            for (int appId : appIdList) {
                 stmt = conn.prepareStatement(sql);
-
-            for (Integer appId : appIdList) {
                 stmt.setInt(1, deviceId);
                 stmt.setInt(2, appId);
                 stmt.setInt(3, tenantId);
-                stmt.addBatch();
+                stmt.execute();
             }
-            stmt.executeBatch();
         } catch (SQLException e) {
             throw new DeviceManagementDAOException("Error occurred while adding device application mapping", e);
         } finally {