[Execute SQL Script] hangs when consecutive postgresql queries finish quickly

[FGPRJS]

Description

CloudBeaver intermittently hangs while executing multiple fast PostgreSQL statements.

With pg_sleep(0.01), execution occasionally stops before all results appear and remains loading indefinitely. With pg_sleep(0.1), it usually succeeds.

The issue also occurs through kubectl port-forward, bypassing the Ingress and ALB.

Steps to reproduce

1. Open SQL Editor
2. Write SQL below

SELECT pg_sleep(0.1), pg_backend_pid(), 1;
SELECT pg_sleep(0.1), 2;
SELECT pg_sleep(0.1), 3;
SELECT pg_sleep(0.1), 4;
SELECT pg_sleep(0.1), 5;

3. [Execute SQL Script] 5 times -> Usually succeeds
4. Write SQL below

SELECT pg_sleep(0.01), pg_backend_pid(), 1;
SELECT pg_sleep(0.01), 2;
SELECT pg_sleep(0.01), 3;
SELECT pg_sleep(0.01), 4;
SELECT pg_sleep(0.01), 5;

5. [Execute SQL Script] 5 times-> Often hangs

Expected/Desired Behavior

All five statements should complete, all results should appear, and the loading state should end on every execution.

SELECT 1;
SELECT 2;
SELECT 3;
SELECT 4;
SELECT 5;

CloudBeaver Version

26.1.5

Additional context

• CloudBeaver Community: 26.1.5
• Image: dbeaver/cloudbeaver:26.1.5
• Replicas: 1
• CPU: request 100m, limit 1 core
• Memory: request 512 MiB, limit 1 GiB
  • Increasing the container resources from 1 CPU / 1 GiB to 2 CPUs / 4 GiB did not change the behavior.
• Database: PostgreSQL
• Browser: Firefox 154.0.1 (64bit)
• Client OS: MacOS 26.4.1

[dariamarutkina]

Hello, @FGPRJS !

So far, we haven't been able to reproduce the issue on our side

Could you please provide:

• your PostgreSQL version;
• approximately how often the issue occurs;
• how many result sets are shown before the execution hangs;
• any errors from the browser Console/Network tab or CloudBeaver server logs at that moment.

Also, could you please check whether the issue reproduces with:

SELECT 1;
SELECT 2;
SELECT 3;
SELECT 4;
SELECT 5;

If possible, please also attach a screen recording showing the execution from clicking Execute SQL Script until it hangs. This would help us better understand where the execution gets stuck 🦫

[FGPRJS]

1. your PostgreSQL version

• 18.4

2. approximately how often the issue occurs

• always

3. how many result sets are shown before the execution hangs;

• 2~3

4. any errors from the browser Console/Network tab or CloudBeaver server logs at that moment.

• Cannot find any browser console / network error

2026-08-28.4.00.40.mov

[dariamarutkina]

Thank you for the additional details💙

Since we still cannot reproduce the issue on our side with PostgreSQL 18, could you please also check:

• whether CloudBeaver connects directly to PostgreSQL, or if there is any additional proxy or service between them;
• whether the issue reproduces with a newly created PostgreSQL connection using default settings;
• whether there are any related messages in the CloudBeaver server logs when the execution hangs;
• in DevTools → Network → WS, whether the WebSocket connection remains active when the execution gets stuck.