diff --git a/src/chat/utils/statistic.py b/src/chat/utils/statistic.py
index 8f5e939d2..f760a0f44 100644
--- a/src/chat/utils/statistic.py
+++ b/src/chat/utils/statistic.py
@@ -121,7 +121,7 @@ class StatisticOutputTask(AsyncTask):
 
     def __init__(self, record_file_path: str = "mofox_bot_statistics.html"):
         # 延迟300秒启动，运行间隔300秒
-        super().__init__(task_name="Statistics Data Output Task", wait_before_start=0, run_interval=300)
+        super().__init__(task_name="Statistics Data Output Task", wait_before_start=600, run_interval=900)
 
         self.name_mapping: dict[str, tuple[str, float]] = {}
         """
diff --git a/src/common/database/core/engine.py b/src/common/database/core/engine.py
index 0b1f724d4..d9c7a02a6 100644
--- a/src/common/database/core/engine.py
+++ b/src/common/database/core/engine.py
@@ -114,6 +114,9 @@ def _build_sqlite_config(config) -> tuple[str, dict]:
             "check_same_thread": False,
             "timeout": 60,
         },
+        # ⚠️ 禁用 SQLAlchemy 查询编译缓存以阻断可能的 tuple 膨胀
+        # 观察到长时间运行后 tuple 数量飙升，先通过关闭缓存止血
+        "query_cache_size": 0,
     }
 
     logger.debug(f"SQLite配置: {db_path}")
@@ -162,6 +165,8 @@ def _build_postgresql_config(config) -> tuple[str, dict]:
         "pool_timeout": config.connection_timeout,
         "pool_recycle": 3600,
         "pool_pre_ping": True,
+        # ⚠️ 禁用 SQLAlchemy 查询编译缓存以阻断可能的 tuple 膨胀
+        "query_cache_size": 0,
     }
 
     if connect_args:
diff --git a/src/common/message_repository.py b/src/common/message_repository.py
index 3e9f37e10..9f997fa89 100644
--- a/src/common/message_repository.py
+++ b/src/common/message_repository.py
@@ -112,16 +112,13 @@ async def find_messages(
             if limit <= 0:
                 capped_limit = SAFE_FETCH_LIMIT
                 logger.warning(
-                    "find_messages 未指定 limit，自动限制为 %s 行以避免内存占用过高",
-                    capped_limit,
+                    f"find_messages 未指定 limit，自动限制为 {capped_limit} 行以避免内存占用过高",
                 )
             else:
                 capped_limit = max(1, int(limit))
                 if capped_limit > SAFE_FETCH_LIMIT:
                     logger.warning(
-                        "find_messages 请求的 limit=%s 超过安全上限，已限制为 %s",
-                        limit,
-                        SAFE_FETCH_LIMIT,
+                        f"find_messages 请求的 limit={limit} 超过安全上限，已限制为 {SAFE_FETCH_LIMIT}",
                     )
                     capped_limit = SAFE_FETCH_LIMIT