diff --git a/omniadvisor/config/common_config.cfg b/omniadvisor/config/common_config.cfg
index 4248a8900fdd7c2c4e1baa0426af76b6ef26896a..10df3ac232552bcbd2082f92d5bc2a6ee0b655d0 100755
--- a/omniadvisor/config/common_config.cfg
+++ b/omniadvisor/config/common_config.cfg
@@ -3,8 +3,22 @@
 tuning.retest.times=1
 # 评估配置失效的阈值，当配置执行失败次数大于等于此值，则配置失效
 config.fail.threshold = 1
-#调优策略
+# 调优策略
 tuning.strategy=[["transfer", 1],["expert", 2],["iterative", 10]]
+# 后台复测使用的队列，若不设置，则保持用户队列
+backend.retest.queue=
+
+[database]
+# 后端数据库postgresql的database名称
+postgresql.database.name=
+# 后端数据库postgresql的用户
+postgresql.database.user=
+# 后端数据库postgresql的用户登录密码
+postgresql.database.password=
+# 后端数据库postgresql的连接host
+postgresql.database.host=
+# 后端数据库postgresql的连接端口
+postgresql.database.port=
 
 [spark]
 # Spark History Server的URL 仅用于Rest模式
diff --git a/omniadvisor/src/common/constant.py b/omniadvisor/src/common/constant.py
index 8a75091fbde9d10761be2ab7a7f3274a53e56f2a..a102580a19a5d208607bc097adaaea0134241280 100644
--- a/omniadvisor/src/common/constant.py
+++ b/omniadvisor/src/common/constant.py
@@ -2,8 +2,6 @@ import json
 import os
 import configparser
 
-from server.engine.settings import BASE_DIR
-
 
 def load_common_config(config_path: str):
     """
@@ -56,8 +54,6 @@ class OmniAdvisorConf:
 
     # OmniAdvisor根目录
     project_base_dir = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-    # Django Server根目录
-    server_base_dir = BASE_DIR
     # Log文件目录
     log_dir = f'{project_base_dir}/logs'
     log_file_path = f'{log_dir}/app.log'
@@ -106,15 +102,24 @@ class OmniAdvisorConf:
     # 输入配置解析
     _common_config = load_common_config(config_path=common_config_path)
     # 配置罗列
+    # common页
     tuning_retest_times = _common_config.getint('common', 'tuning.retest.times')
     config_fail_threshold = _common_config.getint('common', 'config.fail.threshold')
+    tuning_strategies = json.loads(_common_config.get('common', 'tuning.strategy'))
+    backend_retest_queue = _common_config.get('common', 'backend.retest.queue')
+    # database页
+    postgresql_database_name = _common_config.get('database', 'postgresql.database.name')
+    postgresql_database_user = _common_config.get('database', 'postgresql.database.user')
+    postgresql_database_password = _common_config.get('database', 'postgresql.database.password')
+    postgresql_database_host = _common_config.get('database', 'postgresql.database.host')
+    postgresql_database_port = _common_config.get('database', 'postgresql.database.port')
+    # spark页
     spark_history_rest_url = _common_config.get('spark', 'spark.history.rest.url')
-    spark_history_username = _common_config.get('spark', 'spark.history.username', fallback='')
-    spark_history_password = _common_config.get('spark', 'spark.history.password', fallback='')
+    spark_history_username = _common_config.get('spark', 'spark.history.username')
+    spark_history_password = _common_config.get('spark', 'spark.history.password')
     spark_fetch_trace_timeout = _common_config.getint('spark', 'spark.fetch.trace.timeout')
     spark_fetch_trace_interval = _common_config.getint('spark', 'spark.fetch.trace.interval')
     spark_exec_timeout_ratio = _common_config.getfloat('spark', 'spark.exec.timeout.ratio')
-    tuning_strategies = json.loads(_common_config.get('common', 'tuning.strategy'))
 
     # 保留小数位数
     decimal_digits = 3
diff --git a/omniadvisor/src/omniadvisor/interface/hijack_recommend.py b/omniadvisor/src/omniadvisor/interface/hijack_recommend.py
index 5da174b1a2ada9c482ddc511ab9385f9d86fa517..652eb35182747f47ff70e13b35ea3c64da87f592 100644
--- a/omniadvisor/src/omniadvisor/interface/hijack_recommend.py
+++ b/omniadvisor/src/omniadvisor/interface/hijack_recommend.py
@@ -177,7 +177,7 @@ def hijack_recommend(argv: list):
 
     # 根据配置和负载执行Spark任务
     global_logger.info("Going to execute Spark load ……")
-    exam_record, output = spark_run(load=load, config=exec_config, wait_for_trace=False)
+    exam_record, output = spark_run(load=load, config=exec_config, wait_for_trace=False, exec_in_isolation=False)
     # 执行结果分析
     if exam_record.status == OA_CONF.ExecStatus.success:
         # 打印结果输出
diff --git a/omniadvisor/src/omniadvisor/repository/__init__.py b/omniadvisor/src/omniadvisor/repository/__init__.py
index 781bf154632a780bf8e976210af690ac8479171e..8116a638a1b8360451ab861e9476b19304fa730e 100644
--- a/omniadvisor/src/omniadvisor/repository/__init__.py
+++ b/omniadvisor/src/omniadvisor/repository/__init__.py
@@ -1,18 +1,11 @@
 import django
 from django.conf import settings
 
-from common.constant import OA_CONF
+from server.engine.settings import DATABASES
 
 
 if not settings.configured:
-    # 启用内存数据库，确保不影响原来的数据库
-    DATABASES = {
-        'default': {
-            'ENGINE': 'django.db.backends.sqlite3',
-            'NAME': OA_CONF.server_base_dir / 'db.sqlite3',
-        }
-    }
-
+    # 配置Django数据库信息
     settings.configure(
         DATABASES=DATABASES,
         DEBUG=False,
diff --git a/omniadvisor/src/omniadvisor/service/retest_service.py b/omniadvisor/src/omniadvisor/service/retest_service.py
index c06bbb642ef931d842b0ce616e757de30a75136f..adf7f5708a63f9c8e95a30bf1b1fbec13e76f896 100644
--- a/omniadvisor/src/omniadvisor/service/retest_service.py
+++ b/omniadvisor/src/omniadvisor/service/retest_service.py
@@ -17,7 +17,7 @@ def retest(load: Load, config: dict):
     global_logger.debug('Starting retest config...')
     for i in range(1, OA_CONF.tuning_retest_times + 1):
         try:
-            exam_record, spark_output = spark_run(load=load, config=config, wait_for_trace=True)
+            exam_record, spark_output = spark_run(load=load, config=config, wait_for_trace=True, exec_in_isolation=True)
         except Exception as e:
             global_logger.error(
                 'Retest failed in round %d. Exception source: Non-Spark exception. Details: %s.', i, e
diff --git a/omniadvisor/src/omniadvisor/service/spark_service/spark_run.py b/omniadvisor/src/omniadvisor/service/spark_service/spark_run.py
index ded0683b9620d7bd3a23ac8d9d3e0b2762b88be0..dcf8534b4fb04a7a7aa3239018a77be03cedf158 100644
--- a/omniadvisor/src/omniadvisor/service/spark_service/spark_run.py
+++ b/omniadvisor/src/omniadvisor/service/spark_service/spark_run.py
@@ -24,7 +24,7 @@ _RETURN_CODE_MAP = {
 }
 
 
-def spark_run(load: Load, config: dict, wait_for_trace: bool = False):
+def spark_run(load: Load, config: dict, wait_for_trace: bool = True, exec_in_isolation: bool = False):
     """
     输入负载与配置，执行Spark任务 并从Spark命令的返回值中获取
     生成一条记录本次执行信息的exam_record
@@ -33,10 +33,17 @@ def spark_run(load: Load, config: dict, wait_for_trace: bool = False):
     :param load: 负载
     :param config: 参数配置
     :param wait_for_trace: 是否阻塞等待获取trace
+    :param exec_in_isolation: 是否在隔离队列中执行
     :return:
     """
+    # 是否要在隔离中执行，若在隔离中执行，则将队列改为隔离队列
+    if exec_in_isolation and OA_CONF.backend_retest_queue:
+        exec_attr = load.exec_attr
+        exec_attr['queue'] = OA_CONF.backend_retest_queue
+    else:
+        exec_attr = load.exec_attr
     # 从解析后的参数列表中提取负载与任务的相关信息
-    submit_cmd = SparkCMDParser.reconstruct_cmd(exec_attr=load.exec_attr, conf_params=config)
+    submit_cmd = SparkCMDParser.reconstruct_cmd(exec_attr=exec_attr, conf_params=config)
 
     # 判断当前执行配置是否为租户基线配置，若不相同则需设置超时时间
     if config != load.default_config:
diff --git a/omniadvisor/src/server/app/models.py b/omniadvisor/src/server/app/models.py
index 49f59be28678891af050d3b897ecbb49257f43be..49a6d00e491ed12ee30055f7da83fff2b414a799 100644
--- a/omniadvisor/src/server/app/models.py
+++ b/omniadvisor/src/server/app/models.py
@@ -40,7 +40,7 @@ class DatabaseTuningRecord(models.Model):
         null=False,
         choices=_TUNING_METHOD_CHOICES
     )
-    method_extend = models.CharField(max_length=20, null=True)
+    method_extend = models.CharField(max_length=50, null=True)
     rounds = models.IntegerField(null=True)
 
     class Meta:
diff --git a/omniadvisor/src/server/engine/settings.py b/omniadvisor/src/server/engine/settings.py
index b0cf7bc78fd5e64a6fea82c22b5d7b8cb71487f1..ac376cfb2a617951a2c75b3f4cff3c21c915bbba 100644
--- a/omniadvisor/src/server/engine/settings.py
+++ b/omniadvisor/src/server/engine/settings.py
@@ -12,6 +12,8 @@ https://docs.djangoproject.com/en/4.2/ref/settings/
 
 from pathlib import Path
 
+from common.constant import OA_CONF
+
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
 BASE_DIR = Path(__file__).resolve().parent.parent
 
@@ -76,8 +78,12 @@ WSGI_APPLICATION = 'server.engine.wsgi.application'
 
 DATABASES = {
     'default': {
-        'ENGINE': 'django.db.backends.sqlite3',
-        'NAME': BASE_DIR / 'db.sqlite3'
+        'ENGINE': 'django.db.backends.postgresql',
+        'NAME': OA_CONF.postgresql_database_name,
+        'USER': OA_CONF.postgresql_database_user,
+        'PASSWORD': OA_CONF.postgresql_database_password,
+        'HOST': OA_CONF.postgresql_database_host,
+        'PORT': OA_CONF.postgresql_database_port,
     }
 }
 
diff --git a/omniadvisor/tests/omniadvisor/__init__.py b/omniadvisor/tests/omniadvisor/__init__.py
index 4e4cfa66f9809a201d030c4f8a90014de8bca24e..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 100644
--- a/omniadvisor/tests/omniadvisor/__init__.py
+++ b/omniadvisor/tests/omniadvisor/__init__.py
@@ -1,19 +0,0 @@
-import django
-from django.conf import settings
-
-if not settings.configured:
-    # 启用内存数据库，确保不影响原来的数据库
-    DATABASES = {
-        'default': {
-            'ENGINE': 'django.db.backends.sqlite3',
-            'NAME': ':memory:',
-        }
-    }
-
-    settings.configure(
-        DATABASES=DATABASES,
-        DEBUG=False,
-        INSTALLED_APPS=['server'],
-    )
-    # 初始化 Django 环境
-    django.setup()
diff --git a/omniadvisor/tests/omniadvisor/interface/test_hijack_recommend.py b/omniadvisor/tests/omniadvisor/interface/test_hijack_recommend.py
index fa03b8ea506bc4bc223e1dfbdfbd35b700f8c51b..f983beaa7134dcc19466eafa4a455ced69044946 100644
--- a/omniadvisor/tests/omniadvisor/interface/test_hijack_recommend.py
+++ b/omniadvisor/tests/omniadvisor/interface/test_hijack_recommend.py
@@ -31,7 +31,7 @@ class TestHijackRecommend:
         mock_spark_run.return_value = (MagicMock(status="success"), "job output")
 
         hijack_recommend(argv)
-        mock_spark_run.assert_called_once_with(load=load, config=exec_config, wait_for_trace=False)
+        mock_spark_run.assert_called_once_with(load=load, config=exec_config, wait_for_trace=False, exec_in_isolation=False)
         mock_process_config.assert_not_called()
 
     # 场景 2: 执行失败 + 进入安全机制
diff --git a/omniadvisor/tests/omniadvisor/repository/__init__.py b/omniadvisor/tests/omniadvisor/repository/__init__.py
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..868a2464865117a21a9e7e14a83d6a1a4f254787 100644
--- a/omniadvisor/tests/omniadvisor/repository/__init__.py
+++ b/omniadvisor/tests/omniadvisor/repository/__init__.py
@@ -0,0 +1,19 @@
+import django
+from django.conf import settings
+
+if not settings.configured:
+    # 启用内存数据库，确保不影响原来的数据库
+    DATABASES = {
+        'default': {
+            'ENGINE': 'django.db.backends.sqlite3',
+            'NAME': ':memory:',
+        }
+    }
+
+    settings.configure(
+        DATABASES=DATABASES,
+        DEBUG=False,
+        INSTALLED_APPS=['server'],
+    )
+    # 初始化 Django 环境
+    django.setup()
\ No newline at end of file
diff --git a/omniadvisor/tests/omniadvisor/service/spark_service/test_spark_run.py b/omniadvisor/tests/omniadvisor/service/spark_service/test_spark_run.py
index b983bb87b364460b5efb1fc137396f2a438d67b3..0c26a2ad8d0e2c0af75f1dfd0bad3dab2ba27a65 100644
--- a/omniadvisor/tests/omniadvisor/service/spark_service/test_spark_run.py
+++ b/omniadvisor/tests/omniadvisor/service/spark_service/test_spark_run.py
@@ -46,6 +46,7 @@ class TestSparkRun:
         ]
         self.mock_response.text = json.dumps(response)
 
+    @patch('omniadvisor.service.spark_service.spark_run.SparkFetcher.get_spark_runtime_by_app')
     @patch('omniadvisor.service.spark_service.spark_run.SparkCMDParser.reconstruct_cmd')
     @patch('omniadvisor.service.spark_service.spark_run.ExamRecordRepository.create')
     @patch('omniadvisor.service.spark_service.spark_run.SparkExecutor.submit_spark_task')
@@ -53,7 +54,7 @@ class TestSparkRun:
     @patch('omniadvisor.service.spark_service.spark_run.multiprocessing.Process')
     @patch('requests.get')
     def test_spark_run_success(self, mock_requests_get, mock_multiprocess, mock_save_trace_data, mock_submit_spark_task,
-                               mock_create_exam_record, mock_reconstruct_cmd):
+                               mock_create_exam_record, mock_reconstruct_cmd, mock_get_spark_runtime):
         """
         测试 spark_run 方法
         """
@@ -71,10 +72,11 @@ class TestSparkRun:
         mock_submit_spark_task.return_value = self.mock_exec_result
         # 配置save_trace_data mock对象
         mock_save_trace_data.return_value = f'{OA_CONF.data_dir}/testfile'
+        # 配置get_spark_runtime_by_app
+        mock_get_spark_runtime.return_value = 20.4
 
         # 方法调用
-        result_exam_record, spark_output = spark_run(self.mock_load, self.conf)
-
+        result_exam_record, spark_output = spark_run(self.mock_load, self.conf, wait_for_trace=False, exec_in_isolation=False)
         # 结果验证
         assert result_exam_record == mock_exam_record
         assert spark_output == self.mock_exec_result.output