diff --git a/sf_machine_connect/controllers/controllers.py b/sf_machine_connect/controllers/controllers.py
index 1f65c884..98c8c37e 100644
--- a/sf_machine_connect/controllers/controllers.py
+++ b/sf_machine_connect/controllers/controllers.py
@@ -162,7 +162,7 @@ class Sf_Dashboard_Connect(http.Controller):
                         # 关机时长：初次上线时间 - 通电时间
                         'power_off_time': power_off_time,
                         # 关机率：关机时长/初次上线时间
-                        'power_off_rate': power_off_rate,
+                        # 'power_off_rate': power_off_rate,
                         'first_online_duration': first_online_duration,
                         # 停机时间：关机时间 - 运行时间
                         # 停机时长：关机时间 - 初次上线时间
@@ -187,11 +187,11 @@ class Sf_Dashboard_Connect(http.Controller):
         """
         res = {'status': 1, 'message': '成功', 'data': {}}
         logging.info('前端请求日志数据的参数为:%s' % kw)
+        # 连接数据库
+        conn = psycopg2.connect(**db_config)
+        cur = conn.cursor()
 
         try:
-            # 连接数据库
-            conn = psycopg2.connect(**db_config)
-            cur = conn.cursor()
             machine_list = ast.literal_eval(kw['machine_list'])
             begin_time_str = kw['begin_time'].strip('"')
             end_time_str = kw['end_time'].strip('"')
@@ -231,6 +231,12 @@ class Sf_Dashboard_Connect(http.Controller):
             res['message'] = '前端请求日志数据失败，原因:%s' % e
             return json.dumps(res)
 
+        finally:
+            if cur:
+                cur.close()
+            if conn:
+                conn.close()
+
     @http.route('/api/logs/page_data', type='http', auth='public', methods=['GET', 'POST'],
                 csrf=False, cors="*")
     def logs_page_data(self, **kw):
@@ -242,11 +248,10 @@ class Sf_Dashboard_Connect(http.Controller):
         res = {'status': 1, 'message': '成功', 'data': {}}
         logging.info('前端请求日志数据的参数为:%s' % kw)
 
+        # 连接数据库
+        conn = psycopg2.connect(**db_config)
+        cur = conn.cursor()
         try:
-            # 连接数据库
-            conn = psycopg2.connect(**db_config)
-            cur = conn.cursor()
-
             # 获取并解析传递的参数
             machine_list = ast.literal_eval(kw.get('machine_list', '[]'))
             begin_time_str = kw.get('begin_time', '').strip('"')