Connection timeout | OutSystems

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Pawan Parmar

Connection timeout

Question

Cache

Reactive

Browsers

Data

Development

Application Type

Reactive

Hi All,

I am getting the following error in the browser console for one of my Data Actions:

CommunicationException: The connection has timed out

This issue occurs intermittently and cannot be reproduced consistently. What are the possible causes of this timeout, and what areas should I investigate to identify the root cause?

06 Aug

Łukasz Kaproń

Hi @Pawan Parmar

Have you tried to investigate it using Logs?

06 Aug

Akshay Deshpande

Hello,

CommunicationException: The connection has timed out is a generic timeout and doesn't always mean the Data Action is the root cause.

Things to investigate:

Slow server-side logic (Aggregates, SQL, loops, integrations).
External API/database latency or intermittent network issues.
Server load (CPU, memory, IIS) during the failures.
Timeout settings for REST/SOAP calls if the Data Action invokes integrations.
Service Center logs (General, Error, and Integration logs) to identify the operation that timed out.

Since the issue is intermittent, compare successful vs. failed executions and check the logs around the failure time. That usually provides the best clue to the root cause.

Thanks and regards,
Akshay Deshpande

06 Aug

Mihai Melencu

Champion

Hi @Pawan Parmar ,

Without seeing the Data Action flow and the queries it executes, it is difficult to determine why it is timing out.

Does the timeout depend on specific input values or combinations of inputs, or does it also occur when the same parameters are used repeatedly?

When the Data Action succeeds, have you checked the General logs in Service Center to see whether any slow queries are being recorded?

06 Aug

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