From cf2173644efdd900b63501cbed0821d921d5d6c6 Mon Sep 17 00:00:00 2001
From: Qiang Lee <18018968632@163.com>
Date: Tue, 1 Jul 2025 12:05:29 +0800
Subject: [PATCH] Release db.session connection before workflow new thread long
 time operation (#21726)
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Co-authored-by: 李强04 <liqiang04@gaotu.cn>
---
 api/core/app/apps/workflow/app_generator.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/api/core/app/apps/workflow/app_generator.py b/api/core/app/apps/workflow/app_generator.py
index 369fa0e48c..a18139e644 100644
--- a/api/core/app/apps/workflow/app_generator.py
+++ b/api/core/app/apps/workflow/app_generator.py
@@ -219,6 +219,9 @@ class WorkflowAppGenerator(BaseAppGenerator):
         # new thread with request context and contextvars
         context = contextvars.copy_context()
 
+        # release database connection, because the following new thread operations may take a long time
+        db.session.close()
+
         worker_thread = threading.Thread(
             target=self._generate_worker,
             kwargs={