diff --git a/backend/open_webui/retrieval/vector/dbs/opengauss.py b/backend/open_webui/retrieval/vector/dbs/opengauss.py
index cfb7166250..d8f84a2580 100644
--- a/backend/open_webui/retrieval/vector/dbs/opengauss.py
+++ b/backend/open_webui/retrieval/vector/dbs/opengauss.py
@@ -311,6 +311,7 @@ class OpenGaussClient(VectorDBBase):
             results = query.all()
 
             if not results:
+                self.session.rollback()
                 return None
 
             ids = [[result.id for result in results]]
@@ -333,6 +334,7 @@ class OpenGaussClient(VectorDBBase):
             results = query.all()
 
             if not results:
+                self.session.rollback()
                 return None
 
             ids = [[result.id for result in results]]