diff --git a/server/infra/db/pg.py b/server/infra/db/pg.py
index 2167e40..190840a 100644
--- a/server/infra/db/pg.py
+++ b/server/infra/db/pg.py
@@ -18,13 +18,14 @@ class AsyncDB(AbstractDB):
             str(cnf.db_uri),
             echo=bool(cnf.app_debug),
             connect_args=con_arg,
-            pool_recycle=1800,
+            pool_recycle=300,
+            pool_pre_ping=True,
         )
 
         # self.engine.execution_options(stream_results=True)
         if self.engine is None:
             raise ConnectError
-        session = asyncio.async_sessionmaker(self.engine, expire_on_commit=True)
+        session = asyncio.async_sessionmaker(self.engine, expire_on_commit=False)
         if session is None:
             raise ConnectError
         self.async_session = session
@@ -35,7 +36,7 @@ class AsyncDB(AbstractDB):
 
     @property
     def session(self):
-        return asyncio.async_sessionmaker(self.engine, expire_on_commit=True)
+        return asyncio.async_sessionmaker(self.engine, expire_on_commit=False)
 
     def session_master(self):
         return self.async_session()