diff --git a/pyproject.toml b/pyproject.toml
index ce990aa..832401a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,6 +39,7 @@ dev-dependencies = [
     "mypy>=1.7.1",
     "pymysql>=1.1.0",
     "pytest-asyncio>=0.23.2",
+    "types-PyMySQL>=1.1.0.1",
 ]
 
 [tool.rye.scripts]
diff --git a/requirements-dev.lock b/requirements-dev.lock
index d5af55c..c10c9d7 100644
--- a/requirements-dev.lock
+++ b/requirements-dev.lock
@@ -22,6 +22,7 @@ distro==1.8.0
 exceptiongroup==1.1.3
 frozenlist==1.4.0
 googleapis-common-protos==1.61.0
+greenlet==3.0.2
 h11==0.14.0
 httpcore==1.0.2
 httpx==0.25.1
@@ -62,6 +63,7 @@ tenacity==8.2.3
 tiktoken==0.5.1
 tomli==2.0.1
 tqdm==4.66.1
+types-pymysql==1.1.0.1
 typing-extensions==4.8.0
 typing-inspect==0.9.0
 urllib3==2.0.7
diff --git a/tests/integrations/database/db.py b/tests/integrations/database/db.py
index a0694ba..c9ddc85 100644
--- a/tests/integrations/database/db.py
+++ b/tests/integrations/database/db.py
@@ -1,37 +1,43 @@
-import logging
 import os
-from typing import Union, List
+from typing import List, Union
 
 import pymysql
 
+from greptimeai import logger
+
 from .model import Tables
 
-db = pymysql.connect(
+connection = pymysql.connect(
     host=os.getenv("GREPTIMEAI_HOST"),
     user=os.getenv("GREPTIMEAI_USERNAME"),
     passwd=os.getenv("GREPTIMEAI_PASSWORD"),
     port=4002,
     db=os.getenv("GREPTIMEAI_DATABASE"),
 )
-cursor = db.cursor()
+# cursor = connection.cursor()
 
-trace_sql = "SELECT model,prompt_tokens,completion_tokens FROM %s WHERE user_id = '%s'"
-truncate_sql = "TRUNCATE %s"
+trace_sql = f"SELECT model, prompt_tokens, completion_tokens FROM {Tables.llm_trace} WHERE user_id = '%s'"
 
 
 def get_trace_data(user_id: str) -> List[Union[str, int]]:
     """
     get trace data for llm trace by user_id
-    :param is_stream:
     :param user_id:
     :return: model, prompt_tokens, completion_tokens
     """
 
-    cursor.execute(trace_sql % (Tables.llm_trace, user_id))
-    trace = cursor.fetchone()
-    if trace is None:
-        raise Exception("trace data is None")
-    return list(trace)
+    with connection.cursor() as cursor:
+        cursor.execute("select * from llm_traces_preview_v01 limit 1")
+        trace = cursor.fetchone()
+        logger.info(f" {type(trace)=} {trace=}")
+
+    with connection.cursor() as cursor:
+        cursor.execute(trace_sql % (user_id))
+        trace = cursor.fetchone()
+        logger.info(f"{type(trace)=} {trace=}")
+        if trace is None:
+            raise Exception("trace data is None")
+        return list(trace)
 
 
 def truncate_tables():
@@ -51,8 +57,9 @@ def truncate_tables():
         "llm_traces_preview_v01",
     ]
     try:
-        cursor.executemany(truncate_sql, tables)
-        db.commit()
+        with connection.cursor() as cursor:
+            cursor.executemany("TRUNCATE %s", tables)
+            connection.commit()
     except Exception as e:
-        logging.error(e)
-        db.rollback()
+        logger.error(e)
+        connection.rollback()
diff --git a/tests/integrations/openai_tracker/__init__.py b/tests/integrations/openai_tracker/__init__.py
index 68ecdd1..d9ce880 100644
--- a/tests/integrations/openai_tracker/__init__.py
+++ b/tests/integrations/openai_tracker/__init__.py
@@ -1,7 +1,6 @@
-from openai import AsyncOpenAI
-from openai import OpenAI
+from openai import AsyncOpenAI, OpenAI
 
-from greptimeai import openai_patcher  # type: ignore
+from greptimeai import openai_patcher
 
 async_client = AsyncOpenAI()
 openai_patcher.setup(client=async_client)
diff --git a/tests/integrations/openai_tracker/test_sync.py b/tests/integrations/openai_tracker/test_sync.py
index c23e7ef..baa33d7 100644
--- a/tests/integrations/openai_tracker/test_sync.py
+++ b/tests/integrations/openai_tracker/test_sync.py
@@ -3,12 +3,10 @@
 
 import pytest
 
-from ..database.db import (
-    get_trace_data,
-    truncate_tables,
-)
+from greptimeai.openai_patcher import _collector
+
+from ..database.db import get_trace_data, truncate_tables
 from ..openai_tracker import client
-from greptimeai.openai_patcher import _collector  # type: ignore
 
 
 @pytest.fixture
@@ -33,11 +31,11 @@ def test_chat_completion(_truncate_tables):
     assert resp.choices[0].message.content == "2"
 
     _collector._collector._force_flush()
-    time.sleep(6)
+    time.sleep(1)
     trace = get_trace_data(user_id)
 
     assert resp.model == trace[0]
 
-    if resp.usage:
-        assert resp.usage.prompt_tokens == trace[1]
-        assert resp.usage.completion_tokens == trace[2]
+    assert resp.usage
+    assert resp.usage.prompt_tokens == trace[1]
+    assert resp.usage.completion_tokens == trace[2]